EN

Operation & Maintenance Manual

Mixing Bucket

MB200SD BT: S/N AK1E00101 & Above

MB250SD: S/N AC4800101 & Above
MB250SD BT: S/N AK1C00101 & Above
MB250SD QT: S/N AK1D00101 & Above
MB600L

6987092-EN (10-08) Revised (12-12) (5) Printed in Belgium © Bobcat Company 2012
Original Instructions
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 CONTENTS

FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SAFETY & TRAINING RESOURCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

ALPHABETICAL INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

REFERENCE INFORMATION

Write the correct information for YOUR Bobcat attachment in the spaces below. Always use these numbers when
referring to your Bobcat attachment.

Attachment Serial Number

NOTES:

YOUR BOBCAT DEALER:

ADDRESS:

PHONE:

Bobcat Company Bobcat Company

P.O. Box 128 Drève Richelle 167
Gwinner, ND 58040-0128 B-1410 WATERLOO
UNITED STATES OF AMERICA BELGIUM

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 FOREWORD

This Operation & Maintenance Manual was written to give the owner / operator instructions on the safe operation
and maintenance of the Bobcat attachment. READ AND UNDERSTAND THIS OPERATION & MAINTENANCE
MANUAL BEFORE OPERATING YOUR BOBCAT ATTACHMENT. If you have any questions, see your Bobcat
dealer. This manual can illustrate options and accessories not installed on your attachment.

DECLARATION OF CONFORMITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

BOBCAT COMPANY IS IS0 9001 CERTIFIED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SERIAL NUMBER LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Mixing Bucket Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

DELIVERY REPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

MANUAL STORAGE LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

ATTACHMENT IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
MB200SD BT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
MB250SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MB250SD BT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
MB250SD QT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
MB600L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

FEATURES AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

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DECLARATION OF CONFORMITY

Declaration of Conformity
for Interchangeable Equipment
Directive 2006/42/EC of the European Parliament and of The Council
"Machinery Directive Article 1(1)(b)"

Manufacturer Equipment Also Compliant to Other EC

Directive(s) or Standard(s) Listed Below:

Bobcat Company
World Headquarters
250 East Beaton Drive
West Fargo, ND 58078-6000
UNITED STATES OF AMERICA

Technical Documentation
Doosan Benelux SA
Drève Richelle 167
B-1410 Waterloo
BELGIUM

Description of Equipment

Type of Interchangeable Equipment: Mixing Bucket

Model Name:
MB250SD
Model Code:
Lot Series: AC4800101 & above

Declaration of Conformance
This equipment conforms to the requirements of an interchangeable equipment as specified in Machinery Directive
2006/42/EC Article1(1)(b) and any other directives listed. This declaration applies exclusively to the interchangeable
equipment and does not include any hydraulic, electrical or mechanical adaptation done by the installer. Installation shall be
done in accordance with instructions and specifications included in this manual.

Authorized Signatory and Place of Declaration

Troy Kraft Date: December 29, 2009

Vice President Engineering Place: Bismarck, North Dakota, USA

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DECLARATION OF CONFORMITY (CONT’D)

Declaration of Conformity
for Interchangeable Equipment
Directive 2006/42/EC of the European Parliament and of The Council
"Machinery Directive Article 1(1)(b)"

Manufacturer Equipment Also Compliant to Other EC

Directive(s) or Standard(s) Listed Below:

Bobcat Company
World Headquarters
250 East Beaton Drive
West Fargo, ND 58078-6000
UNITED STATES OF AMERICA

Technical Documentation
Doosan Benelux SA
Drève Richelle 167
B-1410 Waterloo
BELGIUM

Description of Equipment

Type of Interchangeable Equipment: Mixing Bucket

Model Name:
MB200SD BT MB250SD BT MB250SD QT
Model Code:
AK1E00101 AK1C00101 AK1D00101
Lot Series: & above & above & above

Declaration of Conformance
This equipment conforms to the requirements of an interchangeable equipment as specified in Machinery Directive
2006/42/EC Article1(1)(b) and any other directives listed. This declaration applies exclusively to the interchangeable
equipment and does not include any hydraulic, electrical or mechanical adaptation done by the installer. Installation shall be
done in accordance with instructions and specifications included in this manual.

Authorized Signatory and Place of Declaration

Troy Kraft Date: May 14, 2010

Vice President Engineering Place: Bismarck, North Dakota, USA

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BOBCAT COMPANY IS IS0 9001 CERTIFIED

ISO 9001 is an international standard that specifies requirements for a quality management system that controls the
processes and procedures which we use to design, develop, manufacture and distribute Bobcat products.

British Standards Institute (BSI) is the Certified Registrar Bobcat Company chose to assess the Company’s compliance
with the ISO 9001 at Bobcat's manufacturing facilities in Gwinner and Bismarck, North Dakota (U.S.A.), Pontchateau
(France), Dobris (Czech Republic) and the Bobcat corporate offices (Gwinner, Bismarck & West Fargo) in North Dakota.
Only certified assessors, like BSI, can grant registrations.

ISO 9001 means that as a company we say what we do and do what we say. In other words, we have established
procedures and policies, and we provide evidence that the procedures and policies are followed.

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SERIAL NUMBER LOCATION Figure 3

Always use the serial number (Item 1) [Figure 1],

[Figure 2] and [Figure 3] of the mixing bucket when
requesting service information or when ordering parts.
Early or later models (identification made by serial
number) can use different parts, or it can be necessary to
use a different procedure in doing a specific service
operation.

Mixing Bucket Serial Number

Figure 1

S8900

Figure 2

S37083

The serial number plate (Item 1) [Figure 1], [Figure 2]

and [Figure 3] is located on the chaincase cover of the
mixing bucket MB250SD [Figure 1] or on the rear of the
mixing bucket [Figure 2] for all other models.

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DELIVERY REPORT MANUAL STORAGE LOCATION

The Delivery Report items must be completed by the Figure 5

dealer and signed by the owner or operator when the
mixing bucket is delivered. An explanation of the form
must be given to the owner. Make sure it is complete 1
[Figure 4].

Figure 4

S37086

The manual storage container (Item 1) [Figure 5] is

located on the rear of the mixing bucket.

B-16315

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ATTACHMENT IDENTIFICATION

MB200SD BT

MANUAL STORAGE
CONTAINER

GRAB HANDLE

[1] REVERSE VALVE

SUPPORT STAND

STEP
DISCHARGE GATE

DISCHARGE TUBE

ATTACHMENT MOUNTING FRAME

HYDRAULIC QUICK COUPLERS

PROTECTIVE GRATE

STEP

AUGER

EM9471
EM9472

[1] Only for S/N AK1E00122 & Above.

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ATTACHMENT IDENTIFICATION (CONT’D)

MB250SD

GRAB HANDLE

DISCHARGE GATE

SUPPORT STANDS STEP

DISCHARGE TUBE

ATTACHMENT MOUNTING FRAME

MANUAL STORAGE
CONTAINER HYDRAULIC QUICK COUPLERS

HOSE GUIDE

PROTECTIVE GRATE

AUGER

EM7809
EM7810

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ATTACHMENT IDENTIFICATION (CONT’D)

MB250SD BT

MANUAL STORAGE
CONTAINER

HYDRAULIC QUICK
COUPLERS GRAB HANDLE

[1] REVERSE VALVE

SUPPORT STAND

DISCHARGE GATE
STEP

DISCHARGE TUBE SUPPORT STAND

ATTACHMENT MOUNTING FRAME

PROTECTIVE GRATE

STEP

AUGER

EM9421
EM9420

[1] Only for S/N AK1C00208 & Above.

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ATTACHMENT IDENTIFICATION (CONT’D)

MB250SD QT

GRAB HANDLE

SUPPORT STAND

DISCHARGE GATE

DISCHARGE TUBE
SUPPORT STAND

QUICK-TACH MOUNTING FRAME

MANUAL STORAGE
CONTAINER

HYDRAULIC QUICK COUPLERS

PROTECTIVE GRATE

STEP

AUGER

EM6740
EM6741

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ATTACHMENT IDENTIFICATION (CONT’D)

MB600L

SUPPORT STAND

SUPPORT STAND

DISCHARGE GATE
QUICK-TACH MOUNTING FRAME

DISCHARGE TUBE

PROTECTIVE GRATE

AUGER

EM8513
EM8514

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FEATURES AND ACCESSORIES Mixing Bucket MB250SD QT, MB600L:

The mixing bucket is equipped with the following • Quick-Tach mounted

standard items:
• Protective steel grate
Mixing Bucket MB200SD BT (S/N AK1E00101 -
AK1E00121), MB250SD, MB250SD BT (S/N AK1C00101 • Dual discharge: tilt and dump or release through the
- AK1C00207): bottom discharge gate

• Bob-Tach mounted • Mixing bucket and auger made of special abrasion-

resistant steel.
• Protective steel grate

• Dual discharge: tilt and dump or release through the

bottom discharge gate

• Mixing bucket and auger made of special abrasion-

resistant steel.

Mixing Bucket MB2500SD BT (S/N AK1E00122 &

Above), MB250SD BT (S/N AK1C00208 & Above):

• Bob-Tach mounted

• Protective steel grate

• Dual discharge: tilt and dump or release through the

bottom discharge gate

• Mixing bucket and auger made of special abrasion-

resistant steel

• Reverse valve.

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 SAFETY & TRAINING RESOURCES

SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Safe Operation Is The Operator’s Responsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Safe Operation Needs A Qualified Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Use Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Avoid Silica Dust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

FIRE PREVENTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Fueling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Spark Arrester Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Welding And Grinding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fire Extinguishers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

MACHINE SIGNS (DECALS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

MB200SD BT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
MB250SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
MB250 SD BT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
MB250SD QT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
MB600L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
No-Text Safety Signs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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SAFETY INSTRUCTIONS Safe Operation Needs A Qualified Operator

Safe Operation Is The Operator’s Responsibility For an operator to be qualified, he or she must not use
drugs or alcoholic drinks which impair alertness or co-
ordination while working. An operator who is taking
prescription drugs must get medical advice to determine
Safety Alert Symbol
if he or she can safely operate a machine and the
attachment.
This symbol with a warning statement means:
“Warning, be alert! Your safety is involved!” A Qualified Operator Must Do The Following:
Carefully read the message that follows. Understand the Written Instructions, Rules and
Regulations
• The written instructions from Bobcat Company
include the Delivery Report, Operation &
WARNING Maintenance Manual, Operator’s Handbook, Safety
Manual and machine signs (decals).
• Check the rules and regulations at your location. The
Operator must have instructions before operating the
rules can include an employer’s work safety
machine. Untrained operators can cause injury or
requirements. For driving on public roads, the
death.
machine must be equipped as stipulated by the local
W-2001-0502
regulations authorising operation on public roads in
your specific country. Regulations can identify a
hazard such as a utility line.
Have Training with Actual Operation

IMPORTANT • Operator training must consist of a demonstration and

verbal instruction. This training is given by your
Bobcat dealer before the product is delivered.
This notice identifies procedures which must be
followed to avoid damage to the machine. • The new operator must start in an area without
I-2019-0284 bystanders and use all the controls until he or she can
operate the machine and attachment safely under all
conditions of the work area. Always fasten seat belt
before operating.

DANGER Know the Work Conditions

• Know the weight of the materials being handled.
The signal word DANGER on the machine and in the Avoid exceeding the machine load capacities.
manuals indicates a hazardous situation which, if not Material which is very dense will be heavier than the
avoided, will result in death or serious injury. same volume of less dense material. Reduce the size
D-1002-1107 of load if handling dense material.
• The operator must know any prohibited uses or work
areas, for example, he or she needs to know about
excessive slopes.

WARNING •
•
Know the location of any underground lines.
Wear tight fitting clothing. Always wear safety glasses
when doing maintenance or service. Safety glasses,
The signal word WARNING on the machine and in the respiratory equipment, hearing protection, Special
manuals indicates a potentially hazardous situation Applications Kits or a Front Window Guard are
which, if not avoided, could result in death or serious required for some work. See your Bobcat dealer
injury. about Bobcat Safety equipment for your machine.
W-2044-1107

The Bobcat machine and attachment must be in good

operating condition before use.

Check all of the items on the Bobcat Service Schedule

Decal under the 8-10 hour column or as shown in the
Operation & Maintenance Manual.

SI ATT EMEA-0909

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SAFETY INSTRUCTIONS (CONT’D) Avoid Silica Dust

Use Safety Rules

• Read and follow instructions in the machine and the

attachment’s Operation & Maintenance Manual
before operating.

• Check for underground lines before operating

attachment (if applicable).

• In addition to the design and configuration of

equipment, hazard control and accident prevention Cutting or drilling concrete containing sand or rock
are dependent upon the awareness, concern, containing quartz can result in exposure to silica dust.
prudence and proper training of personnel involved in Use a respirator, water spray or other means to control
the operation, transport, maintenance and storage of dust.
equipment.

• Check that the Bob-Tach levers are in the locked

position and the wedges are fully engaged into the
holes of the attachment (if applicable).

• Check that the attachment is securely fastened to the

machine.

• Make sure all the machine controls are in the

NEUTRAL position before starting the machine.

• Operate the attachment only from the operator’s

position.

• Operate the attachment according to the Operation &

Maintenance Manual.

• When learning to operate the attachment, do it at a

slow rate in an area clear of bystanders.

• DO NOT permit personnel to be in the work area

when operating the machine and attachment.

• The attachment must be used ONLY on approved

machines. See your Bobcat dealer for updated list of
approved attachments for each machine model.

• DO NOT modify equipment or add attachments that

are not approved by the manufacturer.

• DO NOT make any adjustments or repairs on the

machine or attachment while the engine is running.

• Keep shields and guards in place. Replace if

damaged.

Sl ATT EMEA-0909

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FIRE PREVENTION Hydraulic System

Check hydraulic tubes, hoses and fittings for damage

and leakage. Never use open flame or bare skin to check
for leaks. Hydraulic tubes and hoses must be properly
routed and have adequate support and secure clamps.
Tighten or replace any parts that show leakage.

Maintenance Always clean fluid spills. Do not use petrol or diesel fuel
for cleaning parts. Use commercial non-flammable
The machine and some attachments have components solvents.
that are at high temperatures under normal operating
conditions. The primary source of high temperatures is Fueling
the engine and exhaust system. The electrical system, if
damaged or incorrectly maintained, can be a source of
arcs or sparks.

Flammable debris (leaves, straw, etc.) must be removed

regularly. If flammable debris is allowed to accumulate, it
can cause a fire hazard. Clean often to avoid this
accumulation. Flammable debris in the engine Stop the engine and let it cool before adding fuel. No
compartment is a potential fire hazard. smoking! Do not refuel a machine near open flames or
sparks. Fill the fuel tank outdoors.
The operator’s area, engine compartment and engine
cooling system must be inspected every day and cleaned
if necessary to prevent fire hazards and overheating. Starting

All fuels, most lubricants and some coolants mixtures are Do not use ether or starting fluids on any engine that has
flammable. Flammable fluids that are leaking or spilled glow plugs. These starting aids can cause explosion and
onto hot surfaces or onto electrical components can injure you or bystanders.
cause a fire.
Use the procedure in the Operation & Maintenance
Manual for connecting the battery and for jump starting.
Operation

Do not use the machine where exhaust, arcs, sparks or Spark Arrester Exhaust System
hot components can contact flammable material,
explosive dust or gases. The spark arrester exhaust system is designed to control
the emission of hot particles from the engine and exhaust
system, but the muffler and the exhaust gases are still
Electrical hot.

Check the spark arrester exhaust system regularly to

make sure it is maintained and working properly. Use the
procedure in the Operation & Maintenance Manual for
cleaning the spark arrester muffler (if equipped).

Check all electrical wiring and connections for damage.

Keep the battery terminals clean and tight. Repair or
replace any damaged part or wires that are loose or
frayed.

Battery gas can explode and cause serious injury. Use

the procedure in the Operation & Maintenance Manual
for connecting the battery and for jump starting. Do not
jump start or charge a frozen or damaged battery. Keep
any open flames or sparks away from batteries. Do not
smoke in battery charging area.

Sl ATT EMEA-0909

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FIRE PREVENTION (CONT’D)

Welding And Grinding

Always clean the machine and attachment, disconnect

the battery, and disconnect the wiring from the Bobcat
controllers before welding. Cover rubber hoses, battery
and all other flammable parts. Keep a fire extinguisher
near the machine when welding.

Have good ventilation when grinding or welding painted

parts. Wear dust mask when grinding painted parts.
Toxic dust or gas can be produced.

Dust generated from repairing non-metallic parts such as

hoods, fenders or covers can be flammable or explosive.
Repair such components in a well ventilated area away
from open flames or sparks.

Fire Extinguishers

Know where fire extinguishers and first aid kits are

located and how to use them. Inspect the fire
extinguisher and service the fire extinguisher regularly.
Obey the recommendations on the instructions plate.

Sl ATT EMEA-0909

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MACHINE SIGNS (DECALS)

MB200SD BT

6809609 (2)

7163222

3
1
7159551
7163221

7130141
5

4
7193887
3
EM9471
7159551 EM9472

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MACHINE SIGNS (DECALS) (CONT’D)

MB250SD

5 7130141

7163222

7163221
1

3
7159551 (2)

6809609 (2)

S20003A
S20000

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MACHINE SIGNS (DECALS) (CONT’D)

MB250 SD BT

2
6809609 (2)

7163222

7163221
1

7159551
5

7130141

7193887

3
7159551 EM9421
EM9420

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MACHINE SIGNS (DECALS) (CONT’D)

MB250SD QT

6809609 (2)

7163222

7163221
1

3
7159551

4
7193887

3
7159551 EM6740
EM6741

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MACHINE SIGNS (DECALS) (CONT’D)

MB600L

3
7159551

4
7193887

6809609 (2)

7163222

7163221
1

3
7159551 EM8513
EM8514

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MACHINE SIGNS (DECALS) (CONT’D) 1. General Hazard Warning (7163221)

No-Text Safety Signs This safety sign is located on the chaincase of the mixing
bucket.
Safety signs are used to alert the equipment operator or
maintenance person to hazards that can be encountered
in the use and maintenance of the equipment. The
location and description of the safety signs are detailed in
this section. Please become familiarised with all safety
signs installed on the machine / attachment.

Vertical Configuration

HAZARD
PANEL

WARNING
AVOID INJURY OR DEATH
Never use the attachment without instructions. Read
AVOIDANCE the Operation & Maintenance Manual.
PANEL W-2850-0410

2. Service Warning (7163222)

This safety sign is located on top of chaincase.

Horizontal Configuration

HAZARD
PANEL
AVOIDANCE
PANEL WARNING
The format consists of the hazard panel(s) and the AVOID INJURY OR DEATH
avoidance panel(s): Before servicing the Mixing Bucket:
• Fully lower the lift arms or boom and put Mixing
Hazard panels depict a potential hazard enclosed in a Bucket flat on the ground.
safety alert triangle. • Stop the engine and remove the key.
• Make sure all rotating parts have stopped.
Avoidance panels depict actions required to avoid the W-2869-0510
hazards.
A safety sign can contain more than one hazard panel
and more than one avoidance panel.

NOTE: See “MACHINE SIGNS (DECALS)” on page 27

for the machine location of each
correspondingly numbered no-text decal.

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32 Mixing Bucket Operation & Maintenance Manual
MACHINE SIGNS (DECALS) (CONT’D) 5. Tripping Hazard (7130141)

No-Text Safety Signs (Cont’d) This safety sign is located on the left rear frame of the
mixing bucket.
3. Auger Entanglement (7159551)

This safety sign is located on left and right ends of the

mixing bucket.

WARNING
DO NOT ENTER OR EXIT ON THIS SIDE
WARNING You could slip, trip or fall and become seriously
injured.
W-2809-1009
ENTANGLEMENT IN ROTATING AUGER CAN CAUSE
SERIOUS INJURY OR DEATH
• Keep hands, feet and tools out of hopper during
operation.
• Do not operate with grate removed.
• Never enter or exit the machine with the engine
running.
W-2868-0610

4. Rotating Parts (7193887)

This safety sign is located on the left end of the mixing

bucket near to the discharge chute.

DANGER
AVOID INJURY OR DEATH
• Stop engine before placing hand in discharge
chute.
• Rotating auger will crush and dismember.
D-1023-0510

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34 of 104
34 Mixing Bucket Operation & Maintenance Manual
 OPERATING INSTRUCTIONS

DAILY INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Attachment Mounting Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Bob-Tach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Telescopic Handler Quick-Tach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

OPERATING PROCEDURE WITH LOADERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Approved Loader Models And Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Machine / Attachment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Entering And Exiting The Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Hydraulic Quick Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Operation With The Loader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

OPERATING PROCEDURE WITH TELESCOPIC HANDLERS . . . . . . . . . . . . . . . . . . . . . . . 57

Approved Telescopic Handler Models And Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 57
Entering And Exiting The Telescopic Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Hydraulic Quick Couplers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Releasing Auxiliary Hydraulic Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Operation With The Telescopic Handler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

LIFTING THE ATTACHMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

TRANSPORTING THE ATTACHMENT ON A TRAILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Fastening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

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36 of 104
36 Mixing Bucket Operation & Maintenance Manual
DAILY INSPECTION Check the following items every 10 hours of operation:

Attachment Mounting Frame 1. Check auger for cracks or damage. Replace if

necessary.
Bob-Tach
2. Check for damaged or missing guards and shields.
Figure 6 Replace any damaged or missing components.

3. Check for damaged or missing decals. Replace if

1 necessary.

4. Check for damaged or leaking hydraulic hoses or

fittings. Replace if necessary.

5. Clean debris, leaves, grass and flammable material

from deck area and under covers.

2 6. Lubricate all grease points.

7. Check chain transmission for condition and wear.

Adjust or replace as necessary.
EM6732

Inspect the Bob-Tach wedge mounts (Item 1), mounting

flanges (Item 2) [Figure 6] and all welds on the
attachment mounting frame for wear or damage each
time the attachment is removed from the machine.

Quick-Tach

Figure 7

EM6709

Inspect the Quick-Tach mounting tube (Item 1) [Figure 7]

and all welds on the attachment mount for wear or
damage each time the attachment is removed from the
machine. Inspect the mounting holes.

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37 Mixing Bucket Operation & Maintenance Manual
DAILY INSPECTION (CONT’D) Figure 9

Bob-Tach

Hand Lever Bob-Tach

WARNING
Wedge must contact
AVOID INJURY OR DEATH lower edge of hole in
The Bob-Tach wedges must extend through the holes the attachment.
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off. P-41509A
W-2715-0208

The wedges must extend through the holes in the

Figure 8 attachment mounting frame [Figure 9].

HAND LEVER BOB-TACH If the wedge does not contact the lower edge of the hole
[Figure 9], the attachment will be loose and can come off
the Bob-Tach.

Figure 10

P-60486

Move the Bob-Tach levers to engage and disengage the

wedges [Figure 8]. The levers and wedges must move
freely.
B-17460

Inspect the mounting frame on the attachment and the

Bob-Tach, linkages and wedges for excessive wear or
damage [Figure 10]. Replace any parts that are
damaged, bent or missing. Keep all fasteners tight.

Look for cracked welds. Contact your Bobcat dealer for

repair or replacement parts.

Lubricate the wedges. (See the machine’s Operation &

Maintenance Manual for correct lubrication procedures.)

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38 Mixing Bucket Operation & Maintenance Manual
DAILY INSPECTION (CONT’D) Figure 13

Bob-Tach (Cont’d)

Power Bob-Tach

WARNING
Wedge must contact
AVOID INJURY OR DEATH lower edge of hole in
The Bob-Tach wedges must extend through the holes the attachment.
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off. P-41509A
W-2715-0208

The wedges must extend through the holes in the

Figure 11 attachment mounting frame [Figure 13].

If the wedge does not contact the lower edge of the hole
[Figure 13], the attachment will be loose and can come
off the Bob-Tach.
1
Figure 14

B-15993A

Figure 12

POWER BOB-TACH
B-17460

Inspect the mounting frame on the attachment and the

Bob-Tach, linkages and wedges for excessive wear or
damage [Figure 14]. Replace any parts that are
damaged, bent or missing. Keep all fasteners tight.

Look for cracked welds. Contact your Bobcat dealer for

repair or replacement parts.

Lubricate the wedges. (See the machine’s Operation &

P-60487 Maintenance Manual for correct lubrication procedures.)

Push and hold the BOB-TACH WEDGES UP switch (Item

1) until the wedges are fully raised. Push and hold the
BOB-TACH WEDGES DOWN switch (Item 2) [Figure 11]
until the wedges are fully lowered.

The levers and wedges must move freely [Figure 12].

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39 Mixing Bucket Operation & Maintenance Manual
DAILY INSPECTION (CONT’D) Figure 17

Telescopic Handler Quick-Tach

Figure 15

EM5005

Move the telescopic handler attachment locking pins to

EM5003
engage the pins (Item 1) [Figure 17]. The pins must
move freely. The pins must not be bent nor the ends
The telescopic handler mounting hooks (Item 1) [Figure deformed.
15] must not be damaged. Check the hooks not to be
cracked or broken. Figure 18

Figure 16

EM5006

EM5004
The pins must run through the holes in the attachment
mounting frame (Item 1) [Figure 18].
The stop blocks (Item 1) [Figure 16] must not be
damaged. Check the stop blocks not to be bent or
broken.

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40 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS The loader must be equipped with front auxiliary
hydraulics [Figure 19]
Approved Loader Models And Requirements
Install the correct hose guide (Item 1) [Figure 20] on the
loader.
MIXING BUCKET
LOADER Figure 19
MODEL MB200SD BT MB250SD MB250SD BT

S150 X
S160 X
S175 X X X
S185 X X X
S205 X X X
S220 X X X
S250 X X X
S300 X X X
S330 X X X
S510 X X
S20011
S530 X X
S550 X X
Machine / Attachment Setup
S570 X X
S590 X X Hose Guide Installation (Earlier Version)
S630 X X Figure 20
S650 X X
S770 X X
1
S850 X
A300 X X X 1
A770 X X
T190 X X X
T250 X X X
T300 X X X
T320 X X X
T590 X X
T650 X X
P-37570 P-88504
T770 X X
T870 X

The chart shows the mixing bucket models that are

approved for use with each loader model. 1 1
The warranty is void if this attachment is used on a
non-approved carrier. See your Bobcat dealer for an
updated list of approved carriers.

WARNING
N-17065 P-54720
Never use attachments or buckets which are not
approved by the Bobcat Company. Attachments and
buckets for safe loads of specified densities are NOTE: Hose guide styles vary between loader
approved for each model. Unapproved attachments models. Hose guides are not included with the
and buckets can cause injury or death. attachment. See your Bobcat dealer for
W-2662-0108
available hose guide kits.

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41 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 22

Entering And Exiting The Loader

NOTE: The right and left side of the loader as viewed

from the operator seat.

WARNING
AVOID INJURY OR DEATH
Before you leave the operator’s seat:
• Lower the lift arms and put the attachment flat on
the ground. P16038

• Stop the engine.

• Engage the parking brake. Enter the machine. Fasten the seat and adjust it so the
• Raise the seat bar. buckle is centred between your hips [Figure 22].
• Move all controls to the NEUTRAL / LOCKED
position to make sure the lift, tilt and traction Figure 23
drive functions are deactivated.

The seat bar system must deactivate these functions

when the seat bar is up. See your Bobcat dealer for
service if controls do not deactivate.
W-2463-1110

Entering

Figure 21

2 S4465

Lower the seat bar and engage the parking brake

3 [Figure 23].
4
Put the foot pedals or hand controls in the neutral
position.
1
NOTE: Keep your hands on the steering levers and
EM7808
your feet on the foot pedals (or footrests)
while operating the loader.

NOTE: Mixing bucket is equipped with a foldable step. See your loader’s Operation & Maintenance Manual and
Unfold the step before entering and exiting. Operator’s Handbook for detailed information on
operating the loader.
Use the step (Item 1) located on the right side of the
mixing bucket, grab handle (Item 2) (on cab), grab handle
(Item 3) (on mixing bucket) and step on the mixing bucket
grate (Item 4) [Figure 21] to enter and exit the loader.

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Installation

Entering And Exiting The Loader (Cont’d) Hand Lever Bob-Tach

Exiting NOTE: The attachment mounting frame for the

attachment has a top flange that is designed
Figure 24 to receive the top edge of the Bob-Tach and
the lower part of the frame is designed to
receive the Bob-Tach wedges.

WARNING
The signal word WARNING on the machine and in the
manuals indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
W-2044-1107

S37087 Always inspect the machine's Bob-Tach and the

attachment mounting frame before installation. See your
machine’s Operation & Maintenance Manual.
Lower the lift arms and put the attachment flat on the
ground [Figure 24].

Stop the engine and engage the parking brake.

Lift the seat bar and make sure the lift and tilt functions
WARNING
are deactivated.
Bob-Tach levers have spring tension. Hold lever
Remove the key. tightly and release slowly. Failure to obey warning
can cause injury.
W-2054-1285
Exit the loader.

WARNING
AVOID INJURY OR DEATH
Before you leave the operator’s position:
• Lower the lift arms, put the attachment flat on the
ground.
• Stop the engine and engage the parking brake.
• Move all pedals, handles, joysticks, and other
controls until they are LOCKED or in the
NEUTRAL position.
SEE THE MACHINE OPERATION & MAINTENANCE
MANUAL FOR MORE INFORMATION.
W-2722-0208

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 27

Installation (Cont’d)

Hand Lever Bob-Tach (Cont’d)

Figure 25

EM7800

Tilt the Bob-Tach fully backward until Bob-Tach is vertical

and the attachment is slightly off the ground. This will
cause the attachment frame to fit up against the front of
P-41502 the Bob-Tach.

Stop the engine, engage the parking brake and exit the
Pull the Bob-Tach levers all the way up [Figure 25]. machine.

Move to the operator’s position and fasten seat belt.

Start the engine and release the parking brake.

WARNING
Figure 26
AVOID INJURY OR DEATH
Before you leave the operator’s position:
• Lower the lift arms, put the attachment flat on the
ground.
• Stop the engine and engage the parking brake.
• Move all pedals, handles, joysticks, and other
controls until they are LOCKED or in the
NEUTRAL position.
SEE THE MACHINE OPERATION & MAINTENANCE
MANUAL FOR MORE INFORMATION.
W-2722-0208

EM6749

Tilt the Bob-Tach forward slightly [Figure 26].

Drive the machine slowly forward until the top edge of the
Bob-Tach is completely under the top flange of the
attachment mounting plate.

NOTE: Be sure the Bob-Tach levers do not hit the

attachment.

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 30

Installation (Cont’d)

Hand Lever Bob-Tach (Cont’d)

Figure 28

Wedge must contact

lower edge of hole
in the attachment

P-41509

The wedges must extend through the holes in the

mounting frame of the attachment, securely fastening the
attachment to the Bob-Tach [Figure 30].
P-41502A

Push down on the Bob-Tach levers until they are fully

engaged in the locked position [Figure 28].

Figure 29

Frame contact points

P-41506

The levers must contact the frame as shown when locked

[Figure 29].

If the levers do not engage in the locked position, see

your Bobcat dealer for maintenance.

WARNING
AVOID INJURY OR DEATH
The Bob-Tach wedges must extend through the holes
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off.
W-2715-0208

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 31

Installation (Cont’d)

Power Bob-Tach

1
WARNING
The signal word WARNING on the machine and in the
manuals indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
W-2044-1107 B-15993A

Figure 32

WARNING
AVOID INJURY OR DEATH
Before you leave the operator’s seat:
• Lower the lift arms and put the attachment flat on
the ground.
• Stop the engine.
• Engage the parking brake.
• Raise the seat bar.
• Move all controls to the NEUTRAL / LOCKED
position to make sure the lift, tilt and traction
drive functions are deactivated.
P-41500

The seat bar system must deactivate these functions

when the seat bar is up. See your Bobcat dealer for
Push and hold the BOB-TACH WEDGES UP switch (Item
service if controls do not deactivate.
W-2463-1110
1) [Figure 31] until the levers are fully raised [Figure 32].

Enter the machine.

Fasten seat belt, lower the seat bar, start the engine, and
release the parking brake.

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 35

Installation (Cont’d)

Power Bob-Tach (Cont’d)

Figure 33
1

B-15993A

NOTE: The Power Bob-Tach system has continuous

pressurised hydraulic fluid to keep the
wedges in the engaged position and prevent
EM6749 attachment disengagement. Because the
wedges can slowly lower, the operator may
need to reactivate the switch (BOB-TACH
Tilt the Bob-Tach forward slightly. WEDGES UP) to be sure both wedges are fully
raised before installing the attachment.
Drive the machine forward until the top edge of the Bob-
Tach is completely under the top flange of the attachment Push and hold the BOB-TACH WEDGES UP switch (Item
mounting plate [Figure 33]. 1) [Figure 35] to ensure the wedges are fully raised.

NOTE: Be sure the Bob-Tach levers do not hit the Figure 36

attachment.

Figure 34

P-41500A

S20014 Push and hold the BOB-TACH WEDGES DOWN switch

(Item 1) [Figure 35] until the levers are fully engaged
[Figure 36] and the wedges are fully extended through
Tilt the Bob-Tach fully backward until Bob-Tach is vertical the mounting frame holes.
and the attachment is slightly off the ground. This will
cause the attachment frame to fit up against the front of
the Bob-Tach.

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47 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 38

Installation (Cont’d)

Power Bob-Tach (Cont’d)

Figure 37

Wedge must
contact lower
edge of hole in
the attachment

P-41509

The wedges must extend through the holes in the

mounting frame of the attachment, securely fastening the
attachment to the Bob-Tach [Figure 38].
P-41506
Lower the lift arms and put the attachment flat on the
ground.
The levers must contact the frame [Figure 37] as shown
when locked. Hose Routing

If the levers do not engage in the locked position, see Figure 39

your Bobcat dealer for maintenance.

WARNING
2
AVOID INJURY OR DEATH
The Bob-Tach wedges must extend through the holes
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off.
W-2715-0208

S20019

Run the two hydraulic couplers (Item 1) through the hose

guide (Item 2) [Figure 39].

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Figure 41

Installation (Cont’d)

Discharge Tube

NOTE: Two people are needed to install the discharge

tube, one operating the machine from the
inside and a second person on the outside
securing the discharge tube. 1

Figure 40

S20018

Use the brackets (Item 1) [Figure 41] to secure the

discharge tube to the discharge gate.

EM7805

Lift the mixing bucket just above head height.

Stop the engine and raise the seat bar. Move all pedals,
handles, joysticks and other controls until they are
LOCKED or in the NEUTRAL position.

Have the second person position the discharge tube

under the discharge gate [Figure 40].

WARNING
AVOID INJURY OR DEATH
During the installation of the discharge tube:
• Stop the engine and raise the seat bar.
• The operator inside the machine must NOT move
machine controls.
• The second person must stand to the side of the
mixing bucket. NEVER stand under the mixing
bucket.
W-2923-0711

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Flush Face Coupler With Locking Collar

Hydraulic Quick Couplers Figure 42

QUICK COUPLERS
WARNING
2 1
AVOID BURNS
Hydraulic fluid, tubes, fittings and quick couplers
can get hot when running machine and attachments.
Be careful when connecting and disconnecting quick
couplers.
W-2220-0396

MALE COUPLER FEMALE COUPLER

N-15540

IMPORTANT Connect: Install the male coupler into the female

Contain and dispose of any oil leakage in an coupler. Full connection is made when the ball release
environmentally safe manner. sleeve slides forward on the female coupler and the
I-2066-0395 sleeve is rotated so that the locking pins (Item 1) and the
groove (Item 2) [Figure 42] do NOT align (Locked
Position). This will prevent accidental disconnection.

NOTE: If the locking pins and grooves are aligned

[Figure 42], accidental disconnection is
IMPORTANT possible.

Thoroughly clean the quick couplers before making Disconnect: Relieve hydraulic pressure. (See the
connections. Dirt can quickly damage the system. machine’s Operation & Maintenance Manual for correct
I-2178-0698 procedure.) Rotate the ball release sleeve so that the
grooves (Item 2) are aligned with the pins (Item 1)
[Figure 42] in the female coupler.
New attachments and new machines are factory
equipped with flush face couplers. If installing an
Push the couplers together to relieve any resistance on
attachment equipped with poppet style couplers, the
the sleeve. Retract the sleeve on the female coupler until
attachment couplers must be changed to match the
the couplers disconnect.
machine. See your Bobcat dealer for parts information.

NOTE: Make sure the quick couplers are fully

engaged. If the quick couplers do not fully
engage, check to see that the couplers are the
same size and type.

Remove any dirt or debris from the surface of both the

male and female couplers, and from the outside diameter
of the male coupler. Visually check the couplers for
corroding, cracking, damage, or excessive wear. If any of
these conditions exist, the coupler(s) must be replaced.

For First Time Installation

With the machine engine off, connect the attachment

couplers to the machine couplers. Check the attachment
hoses so they are not twisted and they route to the
machine without contacting any moving parts. If
necessary, loosen the hoses and reroute the hoses as
needed. Tighten all connections before starting the
machine.

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OPERATING PROCEDURE WITH LOADERS (CONT’D) Control Functions

Hydraulic Quick Couplers (Cont’d) Engage auxiliary hydraulics. (See your machine’s
Operation & Maintenance Manual and Operator’s
Flush Face Coupler
Handbook for correct procedure.)
Figure 43
NOTE: The auxiliary hydraulics must be activated
prior to attachment operation.

Increase engine speed to full rpm, and drive the machine

1 2 forward into the work area.

Figure 45
Standard and ACS SJC

S7076
2
2
Connect: Install the male coupler (Item 1) into the female 1
coupler (Item 2). Full connection is made when the ball 1
release sleeve slides forward on the female coupler (Item
2) [Figure 43].

Disconnect: Relieve hydraulic pressure. (See the P-57513 P-79422

machine’s Operation & Maintenance Manual for correct

procedure.) Push the couplers together to relieve any Continuous Control
resistance on the sleeve. Retract the sleeve on the
female coupler (Item 2) [Figure 43] until the couplers Press the front switch (Item 1) [Figure 45] on the right
disconnect. steering lever to start continuous mixing function.
Pressure Released Flush Face Coupler
Press the switch (Item 1) [Figure 45] a second time to
Figure 44 stop continuous mixing function.

Push and hold the switch (Item 2) to the left and then
press the switch (Item 1) [Figure 45] once. Let go of both
switches and the mixing bucket will engage in continuous
discharge function.

Intermittent Control

Push the switch (Item 2) [Figure 45] to the left to open

the discharge gate. Continuing to hold the switch to the
left will start auger rotation once the discharge gate is
fully open.

Push the switch (Item 2) [Figure 45] to the right to close

the discharge gate. Continuing to hold the switch to the
S20011
right will start auger rotation once the discharge gate is
fully closed.
Connect: Install the male coupler into the female
coupler. Full connection is made when the ball release Press the switch (Item 1) [Figure 45] a second time to
sleeve slides forward on the female coupler [Figure 44]. stop continuous discharge function.
Disconnect: Relieve hydraulic pressure. (See the
machine’s Operation & Maintenance Manual for correct
procedure.) Push the couplers together, hold for five
seconds. Retract the sleeve on the female coupler until
the couplers disconnect [Figure 44].

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51 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D) This will switch the pressure flow between the two ports
feeding into the hydraulic motor.
Control Functions (Cont’d)
To stop rotation of the auger the reverse valve can be
Reverse Control used to bypass the motor by positioning the lever in the
central neutral position.
MB200SD BT mixing buckets with serial number
AK1E00122 & Above and MB250SD BT mixing buckets NOTE: No work should be carried out on the mixing
with serial number AK1C00208 & Above come factory bucket with the lever in the neutral position.
installed with a reverse valve. To safely perform maintenance the engine
must be turned off to ensure that the mixing
Mixing bucket reverse valve kits are available from your bucket is free of all hydraulic pressure.
local Bobcat dealer for the following models:

MODEL SERIAL NUMBER

MB200SD BT AK1E00101 - AK1E00121 WARNING
MB250SD BT AK1C00101 - AK1C00207
ENTANGLEMENT IN ROTATING AUGER CAN CAUSE
Figure 46 SERIOUS INJURY OR DEATH
• Keep hands, feet and tools out of hopper during
MB200SD BT
operation.
• Do not operate with grate removed.
3 • Never enter or exit the machine with the engine
2 running.
W-2868-0610

S40546

Figure 47

MB250SD BT

3
2

S40275

Stop the engine and engage the parking brake before

exiting the machine (to set the reverse control).

The rotation direction of the auger can be manually

determined by switching between ports A (Item 1) and
port B (Item 2) with the reverse valve lever (Item 3)
[Figure 46] and [Figure 47].

52 of 104
52 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D)

Operation With The Loader WARNING

Mixing Operation
ENTANGLEMENT IN ROTATING AUGER CAN CAUSE
Figure 48 SERIOUS INJURY OR DEATH
• Keep hands, feet and tools out of hopper during
operation.
• Do not operate with grate removed.
• Never enter or exit the machine with the engine
running.
W-2868-0610

Figure 50

S20010

The mixing bucket can be loaded by silo, truck or directly

from the ground [Figure 48].

Figure 49

S20007

S20017

When the mixing bucket is filled, start the mixing

operation by briefly rotating the shaft to mix the material.

NOTE: Operate the mixing bucket at low idle. The

correct auger rotation speed is 30 rounds per
minute when mixing or discharging concrete.

Combine water and cement in the mixing bucket to obtain

the desired consistency of concrete [Figure 49].

53 of 104
53 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D)

Operation With The Loader (Cont’d)

WARNING
Unloading The Mixing Bucket Using The Lift Arms
AVOID INJURY OR DEATH
Keep the mixing bucket low when moving to the area
where you want to empty the bucket. During the installation of the discharge tube:
• Stop the engine and raise the seat bar.
Raise the lift arms. Level the mixing bucket while raising • The operator inside the machine must NOT move
the lift arms to help prevent material from falling out of the machine controls.
back of the mixing bucket. • The second person must stand to the side of the
mixing bucket. NEVER stand under the mixing
Empty the mixing bucket by tilting the mixing bucket bucket.
forward. W-2923-0711

WARNING WARNING
Never dump over an obstruction, such as a post, that
TIPPING CAN CAUSE SERIOUS INJURY OR DEATH
can enter the operator cab. The machine could tip
• Keep the lift arms or boom as low as possible.
forward and cause injury or death.
W-2057-0694 • Do not travel or turn with the lift arms or boom
up.
• Turn on level ground.
Unloading The Mixing Bucket Using The Discharge Tube • Return the lift arms or boom and mixing bucket
to the lowest position as soon as the mixing
Figure 51 bucket has been emptied.
W-2880-0610

EM7806

Keep the mixing bucket low when moving to the area

where you want to empty the bucket.

Raise the lift arms. Level the mixing bucket while raising
the lift arms to help prevent material from falling out of the
back of the mixing bucket [Figure 51].

Attach the discharge tube. (See Discharge Tube on Page

49.)

Open the discharge gate allowing material to flow out of

the discharge tube [Figure 51].

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54 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D) Power Bob-Tach

Removal Enter the loader. (See Entering And Exiting The Loader
on Page 42.)
Relieve hydraulic pressure. (See the machine Operation
& Maintenance Manual for correct procedure.) Fasten seat belt, lower the seat bar, start the engine and
release the parking brake.
Disconnect auxiliary hydraulic hoses.
Figure 53
Hand Lever Bob-Tach

Figure 52

B-15993A

P-41502B Push and hold the BOB-TACH WEDGES UP switch (Item

1) [Figure 53] until the levers and wedges are fully
raised.
Pull the Bob-Tach levers all the way up [Figure 52].

WARNING
Bob-Tach levers have spring tension. Hold lever
tightly and release slowly. Failure to obey warning
can cause injury.
W-2054-1285

Enter the loader. (See Entering And Exiting The Loader

on Page 42.)

Fasten seat belt, lower the seat bar, start the engine and
release the parking brake.

55 of 104
55 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH LOADERS (CONT’D)

Removal (Cont’d)

All Machines

Figure 54

S20016

Raise the lift arms and tilt the Bob-Tach slowly forward
until the cutting edge touches the ground.

Tilt the Bob-Tach forward while backing the machine

away from the attachment [Figure 54].

WARNING
AVOID INJURY OR DEATH
• Always place the mixing bucket with the cutting
edge flat on the ground before removing from the
machine.
• Removing the mixing bucket with the mounting
frame in the vertical position can cause the
mixing bucket to tip or roll resulting in serious
injury or death.
W-2879-0610

NOTE: In muddy conditions or to prevent the

attachment from freezing to the ground, put
the attachment on planks or blocks before
removing the attachment from the machine.

Exit the loader. (See Entering And Exiting The Loader on

Page 42.)

56 of 104
56 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Figure 56
HANDLERS

Approved Telescopic Handler Models And

Requirements

Figure 55
1
TELESCOPIC MIXING BUCKET
HANDLER MODEL MB250SD BT MB250SD QT
T2250 X X

(X = Approved)

The [Figure 55] shows the telescopic handler models S7048

approved for use with the mixing bucket.
The telescopic handler must be equipped with front
Warranty on this attachment is void if used on a non-
auxiliary couplers (Item 1) [Figure 56].
approved carrier. See your Bobcat dealer for a
current list of approved carriers.

WARNING
Never use attachments or buckets which are not
approved by the Bobcat Company. Attachments and
buckets for safe loads of specified densities are
approved for each model. Unapproved attachments
and buckets can cause injury or death.
W-2662-0108

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57 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Figure 58
HANDLERS (CONT’D)

Entering And Exiting The Telescopic Handler

1 2

WARNING N-20299

AVOID INJURY OR DEATH 1

When operating the machine:
• Operate only from operator’s seat with seat belt
securely fastened.
• The Lateral Operator Restraint System (LORS)
bar must be lowered (if equipped). P-39865
W-2811-1109

Fasten seat belt and lower the restraint bar (Item 1)

Entering
[Figure 58] (if equipped), and disengage the parking
brake.
Figure 57
See your telescopic handler’s Operation & Maintenance
Manual and Operator’s Handbook for detailed information
on operating the telescopic handler.

1 1 2 Exiting
1
N-20299 Put the Travel Direction Control lever and the joystick in
neutral.

Engage the parking brake.

Retract and lower the boom and attachment flat on the

ground.

Stop the engine.

S36260

Raise the restraint bar (if equipped) and make sure the
lift, tilt, boom extend, auxiliary hydraulic and traction drive
Use the grab handles (Item 1) [Figure 57] to enter the
functions are deactivated.
operator cab.
Remove the key.
NOTE: Maintain three-point contact at all times while
entering or exiting the telescopic handler. Do Exit the telescopic handler.
not jump.

WARNING
Before you leave the operator’s position:
• Put the travel Direction Control Lever and the
Joystick in neutral.
• Engage the parking brake.
• Retract and lower the boom and attachment flat
on the ground.
• Stop the engine. Raise the restraint bar (if
equipped).
SEE THE MACHINE OPERATION & MAINTENANCE
MANUAL FOR MORE INFORMATION.
W-2637-0607

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58 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Figure 60
HANDLERS (CONT’D)

Installation

Hand Lever Bob-Tach

NOTE: The attachment mounting frame for the

attachment has a top flange that is designed
to receive the top edge of the Bob-Tach and
the lower part of the frame is designed to
receive the Bob-Tach wedges.

WARNING S20013-B

Never use attachments or buckets which are not

Tilt the Bob-Tach slightly forward [Figure 60].
approved by Bobcat. Buckets and attachments for
safe loads of specified densities are approved for
Drive the machine slowly forward until the top edge of the
each model. Read and understand the Load Capacity
Bob-Tach is completely under the top flange of the
Charts for the attachment you are using. Unapproved
attachment mounting plate.
attachments can cause serious injury or death.
W-2392-0301
NOTE: Be sure the Bob-Tach levers do not hit the
attachment.
Always inspect the machine's Bob-Tach and the
attachment mounting frame before installation. See your Figure 61
machine’s Operation & Maintenance Manual.

Figure 59

S20014

S7043 Tilt the Bob-Tach backward until the Bob-Tach is tight

against the lower part of the attachment mounting frame
[Figure 61].
Pull the Bob-Tach levers (Item 1) [Figure 59] all the way
up. Stop the engine, engage the parking brake and exit the
cab.
Enter the telescopic handler and perform the PRE-
STARTING PROCEDURE. (See your telescopic handler
Operation & Maintenance Manual for correct procedure.)

Lower the boom and tilt the BOB-TACH attachment frame

forward.

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59 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC
HANDLERS (CONT’D)

Installation (Cont’d) WARNING

Hand Lever Bob-Tach (Cont’d)
AVOID INJURY OR DEATH
Figure 62 The Bob-Tach wedges must extend through the holes
in the attachment mounting frame. Levers must be
fully down and locked. Failure to secure wedges can
allow attachment to come off.
W-2715-0208

1 WARNING
Before you leave the operator’s position:
• Put the travel Direction Control Lever and the
Joystick in neutral.
• Engage the parking brake.
S7013 • Retract and lower the boom and attachment flat
on the ground.
• Stop the engine. Raise the restraint bar (if
Push down on the Bob-Tach levers (Item 1) [Figure 62]
equipped).
until they are fully engaged in the locked position
SEE THE MACHINE OPERATION & MAINTENANCE
(wedges fully extended).
MANUAL FOR MORE INFORMATION.
W-2637-0607
Figure 63

S7021

The wedges must extend through the holes in the

mounting frame of the mixing bucket [Figure 63],
securely fastening the mixing bucket to the Bob-Tach.

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60 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Figure 65
HANDLERS (CONT’D)

Installation (Cont’d) 2

Telescopic Handler Quick-Tach

1
Always inspect the telescopic handler attachment
mounting hooks, the attachment locking system and the
attachment mounting frame before each installation. (See
DAILY INSPECTION on Page 37.)

WARNING
EM6711
Never use attachments or buckets which are not
approved by Bobcat. Buckets and attachments for
1. Tilt the attachment frame forward so that the hooks
safe loads of specified densities are approved for
are lower than the attachment tube (Item 1) [Figure
each model. Read and understand the Load Capacity
65].
Charts for the attachment you are using. Unapproved
attachments can cause serious injury or death.
W-2392-0301
2. Extend the boom so that the hooks are under the tube
of the attachment (Item 2) [Figure 65].

Enter the telescopic handler and perform the PRE- Figure 66

STARTING PROCEDURE. (See your telescopic handler
Operation & Maintenance Manual for correct procedure.) 3 4

Drive the machine forward, with the boom fully retracted,

so that the attachment frame is less than 1 m (3.28 ft)
EM5006
from the attachment and perpendicular to it.

Engage the parking brake and put the transmission lever

into neutral.

Figure 64

EM5088

1
3 3. Raise the boom (Item 3) to engage the attachment
tube in the hooks. Tilt the attachment frame if needed
(Item 4) [Figure 66].

4. When the tube is properly engaged in the attachment

frame and the attachment is not touching the ground,
tilt the frame fully backward (Item 4) [Figure 66].
2
S38870 If your telescopic handler is equipped with a hydraulic
lock, turn the thumb switch forward (Item 3) [Figure 64]
to extend the locking pins.
Press the top of the Second Front Auxiliary Hydraulic
switch (Item 1) [Figure 64]. Be sure locking pins extend through the holes of the
attachment (inset Item 1) [Figure 66].
Turn the right thumb switch backward (Item 2) [Figure
64] to retract the locking pin. Move the Second Front Auxiliary Hydraulic switch (Item
1) [Figure 64] to the middle position to turn OFF.

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61 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Discharge Tube
HANDLERS (CONT’D)
NOTE: Two people are needed to install the discharge
Installation (Cont’d) tube, one operating the machine from the
inside and the other one on the outside
Telescopic Handler Quick-Tach (Cont’d) securing the discharge tube.

Figure 69
Figure 67

EM6706
EM5011

If your telescopic handler is equipped with a manual lock, Lift the mixing bucket just above head height.
ensure the mounting frame is tilted back and lower the
boom until the attachment is slightly off the ground. Stop the engine and raise the restraint bar (if equipped).
Move the joystick and other controls until they are locked
Stop the engine, engage the parking brake and exit the or in the NEUTRAL position.
cab.
Position the discharge tube under the discharge gate
[Figure 69].
Insert the locking bar (Item 1) through the mixing bucket
frame holes. Lock the bar with a safety pin (Item 2)
[Figure 67].

Check that the attachment is securely fastened.

WARNING
NOTE: Turn the Second Front Auxiliary Hydraulic
switch ON only when installing or removing
attachments or when using hydraulic AVOID INJURY OR DEATH
attachments (grapple, auger, sweeper).
Always turn switch OFF when not using Front During the installation of the discharge tube:
Auxiliary Hydraulics. • Stop the engine and raise the seat bar.
• The operator inside the machine must NOT move
Hose Routing machine controls.
• The second person must stand to the side of the
Figure 68 mixing bucket. NEVER stand under the mixing
bucket.
W-2923-0711

EM5015

Run the two hydraulic couplers (Items 1) through the

bracket (Item 2) [Figure 68] of the telescopic handler (if
equipped).

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62 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC
HANDLERS (CONT’D)

Installation (Cont’d)

Discharge Tube (Cont’d)

Figure 70

S20018

Use the brackets (Item 1) to secure the discharge tube to

the discharge gate [Figure 70].

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63 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Flush Face Coupler With Locking Collar
HANDLERS (CONT’D)
Hydraulic Quick Couplers Figure 71

QUICK COUPLERS

WARNING
2 1
AVOID BURNS
Hydraulic fluid, tubes, fittings and quick couplers
can get hot when running machine and attachments.
Be careful when connecting and disconnecting quick
couplers.
W-2220-0396
MALE COUPLER FEMALE COUPLER
N-15540

IMPORTANT Connect: Install the male coupler into the female

coupler. Full connection is made when the ball release
Contain and dispose of any oil leakage in an sleeve slides forward on the female coupler and the
environmentally safe manner. sleeve is rotated so that the locking pins (Item 1) and the
I-2066-0395
groove (Item 2) [Figure 71] do NOT align (Locked
Position). This will prevent accidental disconnection.

NOTE: If the locking pins and grooves are aligned

[Figure 71], accidental disconnection is
IMPORTANT possible.

Disconnect: Relieve hydraulic pressure. (See the

Thoroughly clean the quick couplers before making
machine’s Operation & Maintenance Manual for correct
connections. Dirt can quickly damage the system.
I-2178-0698
procedure.) Rotate the ball release sleeve so that the
grooves (Item 2) are aligned with the pins (Item 1)
[Figure 71] in the female coupler.
New attachments and new machines are factory
equipped with flush face couplers. If installing an Push the couplers together to relieve any resistance on
attachment equipped with poppet style couplers, the the sleeve. Retract the sleeve on the female coupler until
attachment couplers must be changed to match the the couplers disconnect.
machine. See your Bobcat dealer for parts information.

NOTE: Make sure the quick couplers are fully

engaged. If the quick couplers do not fully
engage, check to see that the couplers are the
same size and type.

Remove any dirt or debris from the surface of both the

male and female couplers, and from the outside diameter
of the male coupler. Visually check the couplers for
corroding, cracking, damage, or excessive wear. If any of
these conditions exist, the coupler(s) must be replaced.

For First Time Installation

With the machine engine off, connect the attachment

couplers to the machine couplers. Check the attachment
hoses so they are not twisted and they route to the
machine without contacting any moving parts. If
necessary, loosen the hoses and reroute the hoses as
needed. Tighten all connections before starting the
machine.

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64 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Figure 73
HANDLERS (CONT’D)
Hydraulic Quick Couplers (Cont’d)

Flush Face Coupler

Figure 72

1 2

EM5014

If your telescopic handler is equipped with the Hydraulic

Locking Pin option, disconnect the two hydraulic couplers
(Item 1 and 2) (These hydraulic couplers are connected
S7076
to the mounting frame locking pin cylinder). Place the
hydraulic couplers (Item 1 and 2) [Figure 73] in storage
position.
Connect: Install the male coupler (Item 1) into the female
coupler (Item 2). Full connection is made when the ball Figure 74
release sleeve slides forward on the female coupler (Item
2) [Figure 72].

Disconnect: Relieve hydraulic pressure. (See the

machine’s Operation & Maintenance Manual for correct
procedure.) Push the couplers together to relieve any
resistance on the sleeve. Retract the sleeve on the
female coupler (Item 2) [Figure 72] until the couplers
disconnect.

To Connect:

Telescopic Handlers With Single Auxiliary Hydraulic

Couplers EM5016

NOTE: When disconnecting hydraulic hoses, always

use plugs on unused couplers to protect them Install the mixing bucket hydraulic couplers (Item 1 and 2)
from the dirt. [Figure 74] to the telescopic handler couplers.

Release the auxiliary hydraulic pressure. (See Releasing

Auxiliary Hydraulic Pressure on Page 67.)

Stop the telescopic handler engine, engage the parking

brake, unfasten the seat belt and exit the telescopic
handler.

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65 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC To Disconnect:
HANDLERS (CONT’D)
Telescopic Handlers With Single Auxiliary Hydraulic
Hydraulic Quick Couplers (Cont’d) Couplers

Telescopic Handlers With Secondary Auxiliary NOTE: When disconnecting hydraulic hoses, always
Hydraulic Couplers use plugs on unused couplers to protect them
from the dirt.
NOTE: When disconnecting hydraulic hoses, always
use plugs on unused couplers to protect them Release the auxiliary hydraulic pressure. (See Releasing
from the dirt. Auxiliary Hydraulic Pressure on Page 67.)

Release the auxiliary hydraulic pressure. (See Releasing Stop the telescopic handler engine, engage the parking
Auxiliary Hydraulic Pressure on Page 67.) brake, unfasten the seat belt and exit the telescopic
handler.
Stop the telescopic handler engine, engage the parking
brake, unfasten the seat belt and exit the telescopic Figure 76
handler.

Figure 75

EM5023

If your telescopic handler is equipped with a manual lock,

EM5017 disconnect the mixing bucket couplers (Item 1) [Figure
76] from the telescopic handler couplers.

If your telescopic handler is equipped with the Hydraulic Figure 77

Locking Pin option and the Secondary Auxiliary Hydraulic
Couplers, remove the plugs and install the mixing bucket
hydraulic couplers (Item 1 and 2) [Figure 75] to the
telescopic handler secondary couplers.

NOTE: Leave the existing Locking Pin Hydraulic

Couplers connected to the primary (inner)
telescopic handler couplers.

EM5024

NOTE: When disconnecting the mixing bucket

couplers (Item 1) [Figure 76] from a telescopic
handler with Hydraulic Locking Pin option
and single auxiliary couplers, you must also
connect the attachment lock pin cylinder
hoses (Item 1) to the couplers (Item 2 and 3)
[Figure 77]. If these couplers are not
reconnected, the mixing bucket can not be
removed from the telescopic handler.

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66 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Releasing Auxiliary Hydraulic Pressure
HANDLERS (CONT’D)
Hydraulic pressure in the auxiliary hydraulic system can
Hydraulic Quick Couplers (Cont’d) hinder the connection or disconnection of the auxiliary
hydraulic quick couplers. Use the following procedure to
Telescopic Handlers With Secondary Auxiliary release hydraulic pressure from the auxiliary circuit.
Hydraulic Couplers
Place the mixing bucket flat on the ground.
NOTE: When disconnecting hydraulic hoses, always
use plugs on unused couplers to protect them
from the dirt.

Release the auxiliary hydraulic pressure. (See Releasing

Auxiliary Hydraulic Pressure on Page 67.)
WARNING
Stop the telescopic handler engine, engage the parking Releasing hydraulic pressure can cause load to fall.
brake, unfasten the seat belt and exit the telescopic This can cause serious injury or death.
W-2495-0304
handler.

Figure 78 Figure 79

EM5017 S38870

If your telescopic handler is equipped with the Hydraulic Press the bottom of the switch (Item 1) to enable the
Locking Pin option and the Secondary Auxiliary Hydraulic second auxiliary hydraulic couplers. Press the top of the
Couplers, disconnect the mixing bucket couplers (Items 1 switch (Item 1) [Figure 79] to enable the primary
and 2) [Figure 78] from the telescopic handler secondary auxiliary hydraulic couplers.
couplers. Use plugs to protect the unused couplers.
NOTE: Only one pair of front auxiliary hydraulic
couplers can be enabled at one time. Either
the primary couplers are enabled (switch
pressed to top) or the second couplers are
enabled (switch pressed to bottom).

NOTE: Use the same procedure for auxiliary

hydraulic release [Figure 80] as the primary
couplers except have the switch (Item 1)
[Figure 79] pressed to the bottom.

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67 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC
HANDLERS (CONT’D)

Releasing Auxiliary Hydraulic Pressure (Cont’d)

Figure 80

1
CLOSED

OPEN
(pressure relief
position)
S3625

Stop the engine and lower the boom all the way. Turn the
pressure release lever on the front of the machine
(Item 1) [Figure 80] anticlockwise 90° to relieve hydraulic
pressure.

Connect the auxiliary quick couplers to the hydraulically

controlled attachment.

Turn the pressure release lever (Item 1) [Figure 80]

clockwise 90° to operating position.

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68 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC Continuous Control
HANDLERS (CONT’D)
Press the front switch (Item 2) [Figure 81] on the right
Control Functions steer lever to start continuous mixing function.
Figure 81
Press the switch (Item 2) [Figure 81] a second time to
stop continuous mixing function.

Push and hold the switch (Item 3) backward and then

press the switch (Item 2) [Figure 81] once. Let go of both
switches and the mixing bucket will engage in continuous
1 discharge function.
4
Press the switch (Item 2) [Figure 81] a second time to
stop continuous discharge function.

Intermittent Control

2 Push the switch (Item 3) [Figure 81] backward to open

3 the discharge gate. Continuing to hold the switch
S38870
backward will start auger rotation once the discharge
gate is fully open.
Press the bottom of the switch (Item 1) to enable the
second auxiliary hydraulic couplers. Press the top of the Push the switch (Item 4) [Figure 81] forward to close the
switch (Item 1) [Figure 81] to enable the primary discharge gate. Continuing to hold the switch forward will
auxiliary hydraulic couplers. start auger rotation once the discharge gate is fully
closed.
NOTE: Only one pair of front auxiliary hydraulic
couplers can be enabled at one time. Either
the primary couplers are enabled (switch
pressed to top) or the secondary couplers are
enabled (switch pressed to bottom).

NOTE: The auxiliary hydraulics must be activated

prior to attachment operation.

Increase engine speed to full rpm, and drive the machine

forward into the work area.

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69 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC To stop rotation of the auger the reverse valve can be
HANDLERS (CONT’D) used to bypass the motor by positioning the lever in the
neutral position.
Control Functions (Cont’d)
NOTE: No work should be carried out on the mixing
Reverse Control bucket with the lever in the neutral position.
To safely perform maintenance the engine
MB200SD BT mixing buckets with serial number must be turned off to ensure that the mixing
AK1E00122 & Above and MB250SD BT mixing buckets bucket is free of all hydraulic pressure.
with serial number AK1C00208 & Above come factory
installed with a reverse valve.

Mixing bucket reverse valve kits are available from your

local Bobcat dealer for the following models: WARNING
MODEL SERIAL NUMBER
ENTANGLEMENT IN ROTATING AUGER CAN CAUSE
MB200SD BT AK1E00101 - AK1E00121 SERIOUS INJURY OR DEATH
• Keep hands, feet and tools out of hopper during
MB250SD BT AK1C00101 - AK1C00207
operation.
• Do not operate with grate removed.
Figure 82 • Never enter or exit the machine with the engine
running.
MB200SD BT W-2868-0610

3 Operation With The Telescopic Handler

2
Figure 84

S40546

Figure 83

MB250SD BT
EM5019
3
2 Read and understand the Rated Load Capacity Charts
(Item 1) [Figure 84] to learn the Rated Load Capacity at
different extensions and heights of the telescopic boom.

See the telescopic handler Operation & Maintenance

Manual for a complete description of the operation of the
telescopic handler.
1
NOTE: Do not exceed the Rated Load Capacity. See
the Rated Load Capacity Chart (Item 1) [Figure
84] for mixing bucket located in the telescopic
handler cab. Contact your telescopic handler
S40275
dealer for any missing Rated Load Capacity
Charts.
Stop the engine and engage the parking brake before
exiting the machine (to set the reverse control). NOTE: Use only approved tyres at the correct
pressure for the telescopic handler. All four
The rotation direction of the auger can be manually tyres must be the same type. (See Load
determined by switching between ports A (Item 1) and Capacity Charts on Page 72.)
port B (Item 2) with the reverse valve lever (Item 3)
[Figure 46] and [Figure 47]. Enter the telescopic handler, fasten the seat belt, start
the engine and disengage the parking brake.
This will switch the pressure flow between the two ports
feeding into the hydraulic motor.

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70 Mixing Bucket Operation & Maintenance Manual
OPERATING PROCEDURE WITH TELESCOPIC 5. Extend Telescopic Boom
HANDLERS (CONT’D)
6. Retract Telescopic Boom
Operation With The Telescopic Handler (Cont’d)
7. Controls the function of the Front Auxiliary Hydraulics
Figure 85 (Example: mixing function).

8. Controls the function of the Front Auxiliary Hydraulics

(Example: discharge function).

The above Joystick functions (Items 1 to 8) are

proportional; the farther you move the control, the faster
the hydraulic functions operate. Joystick functions (Item 7
1 and 8) [Figure 86] are also used to operate the locking
device for attachments. (See your telescopic handler
Operation & Maintenance Manual).

9. Continuous Auxiliary Hydraulics Flow ON/OFF -

Default flow direction is similar to (Item 7). To reverse
direction, simultaneously operate the right
thumbwheel while pressing button (Item 9) [Figure
S38870
86].

Press the bottom of the switch (Item 1) to enable the 10. Boom Float Button used in combination with button
second auxiliary hydraulic couplers. Press the top of the (Item 9) [Figure 86] to engage the float control
switch (Item 1) [Figure 85] to enable the primary function (If Equipped).
auxiliary hydraulic couplers.
NOTE: If equipped with second auxiliary hydraulic
Figure 86 couplers, the switch (Item 1) [Figure 85] must
be pressed to the top for switch (Item 7 and 8)
[Figure 86] to supply flow to the primary front
1 auxiliary hydraulic couplers.

10
7 4
WARNING
AVOID INJURY OR DEATH
5 Diesel fuel or hydraulic fluid under pressure can
8
penetrate skin or eyes, causing serious injury or
death. Fluid leaks under pressure may not be visible.
Use a piece of cardboard or wood to find leaks. Do
3
6 not use your bare hand. Wear safety goggles. If fluid
2 enters skin or eyes, get immediate medical attention
from a doctor familiar with this injury.
9 W-2072-EN-0909

S3625
WARNING
AVOID BURNS
The joystick controls the movement of the boom and Hydraulic fluid, tubes, fittings and quick couplers
attachment [Figure 86]. can get hot when running machine and attachments.
Be careful when connecting and disconnecting quick
1. Lower Boom couplers.
W-2220-0396
2. Raise Boom

3. Tilt Attachment Backward Stop the telescopic handler on flat, solid and level
ground. Put the Travel Direction Control Lever in neutral
4. Tilt Attachment Forward and engage the parking brake before raising and
extending the boom.

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OPERATING PROCEDURE WITH TELESCOPIC HANDLERS (CONT’D)

Operation With The Telescopic Handler (Cont’d)

Load Capacity Charts

Mixing Bucket MB250SD BT (S/N AK1C00101 & Above):

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OPERATING PROCEDURE WITH TELESCOPIC HANDLERS (CONT’D)

Operation With The Telescopic Handler (Cont’d)

Load Capacity Charts (Cont’d)

Mixing Bucket MB250SD QT (S/N AK1D00101 & Above):

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OPERATING PROCEDURE WITH TELESCOPIC
HANDLERS (CONT’D)

Operation With The Telescopic Handler (Cont’d)

WARNING
Mixing Operation ENTANGLEMENT IN ROTATING AUGER CAN CAUSE
SERIOUS INJURY OR DEATH
Figure 87 • Keep hands, feet and tools out of hopper during
operation.
• Do not operate with grate removed.
• Never enter or exit the machine with the engine
running.
W-2868-0610

Figure 89

S20010

The mixing bucket can be loaded by silo, truck or directly

from the ground [Figure 87].

Figure 88

S20007

S20017

When the mixing bucket is filled, start the mixing

operation by briefly rotating the shaft to mix the material.

NOTE: Operate the mixing bucket at low idle. The

correct auger rotation speed is 30 rounds per
minute when mixing or discharging concrete.

Combine water and cement in the mixing bucket to obtain

the desired consistency of concrete [Figure 88].

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OPERATING PROCEDURE WITH TELESCOPIC
HANDLERS (CONT’D)

Operation With The Telescopic Handler (Cont’d) WARNING

Unloading The Mixing Bucket Using The Boom
AVOID INJURY OR DEATH
Keep the mixing bucket low when moving to the area During the installation of the discharge tube:
where you want to empty the bucket.
• Stop the engine and raise the seat bar.
Raise the boom. Level the mixing bucket while raising the • The operator inside the machine must NOT move
boom to help prevent material from falling out of the back machine controls.
of the mixing bucket. • The second person must stand to the side of the
mixing bucket. NEVER stand under the mixing
Empty the mixing bucket by tilting the mixing bucket bucket.
W-2923-0711
forward.

Unloading The Mixing Bucket Using The Discharge Tube

Figure 90
WARNING
TIPPING CAN CAUSE SERIOUS INJURY OR DEATH
• Keep the lift arms or boom as low as possible.
• Do not travel or turn with the lift arms or boom
up.
• Turn on level ground.
• Return the lift arms or boom and mixing bucket
to the lowest position as soon as the mixing
bucket has been emptied.
W-2880-0610

EM6707

Keep the mixing bucket low when moving to the area

where you want to empty the bucket.

Raise the boom. Level the mixing bucket while raising the
boom to help prevent material from falling out of the back
of the mixing bucket.

Attach the discharge tube. (See Discharge Tube on Page

62.)

Open the discharge gate allowing material to flow out of

the discharge tube.

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OPERATING PROCEDURE WITH TELESCOPIC
HANDLERS (CONT’D)

Removal WARNING
Hand Lever Bob-Tach
Bob-Tach levers have spring tension. Hold lever
Place the mixing bucket flat on the ground. tightly and release slowly. Failure to obey warning
can cause injury.
W-2054-1285
Release the auxiliary hydraulic pressure. (See Releasing
Auxiliary Hydraulic Pressure on Page 67.)
Enter the telescopic handler, fasten the seat belt,
Stop the telescopic handler engine, engage the parking disengage the parking brake and start the engine.
brake, unfasten the seat belt and exit the telescopic
handler. Figure 92

WARNING
Before you leave the operator’s position:
• Put the travel Direction Control Lever and the
Joystick in neutral.
• Engage the parking brake.
• Retract and lower the boom and attachment flat
on the ground.
• Stop the engine. Raise the restraint bar (if
equipped).
SEE THE MACHINE OPERATION & MAINTENANCE S20016
MANUAL FOR MORE INFORMATION.
W-2637-0607
Tilt the Bob-Tach forward while backing the machine
away from the attachment. Unmount the attachment
Disconnect the mixing bucket couplers from the correctly as shown in [Figure 92].
telescopic handler couplers. (See Hydraulic Quick
Couplers on Page 50.) NOTE: Before opening the Bob-Tach levers, the
mixing bucket must be placed to lie so that the
Figure 91 cutting edge is parallel to the ground [Figure
92]. This position is equal to digging into a
sand pile.
1

1
WARNING
AVOID INJURY OR DEATH
• Always place the mixing bucket with the cutting
edge flat on the ground before removing from the
machine.
• Removing the mixing bucket with the mounting
frame in the vertical position can cause the
S7043 mixing bucket to tip or roll resulting in serious
injury or death.
W-2879-0610
Pull both Bob-Tach levers (Item 1) [Figure 91] all the way
up.
NOTE: In muddy conditions or to prevent the
attachment from freezing to the ground, put
the attachment on planks or blocks before
removing the attachment from the machine.

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OPERATING PROCEDURE WITH TELESCOPIC NOTE: Turn the Second Front Auxiliary Hydraulics
HANDLERS (CONT’D) switch ON only when installing or removing
attachments or when using hydraulic
Removal (Cont’d) attachments (grapple, auger, sweeper).
Always turn switch OFF when not using Front
Telescopic Handler Quick-Tach Auxiliary Hydraulics.

Place the mixing bucket flat on the ground. If your telescopic handler is equipped with the Hydraulic
Locking Pin option, enter the telescopic handler, fasten
Release the auxiliary hydraulic pressure. (See Releasing the seat belt, disengage the parking brake and start the
Auxiliary Hydraulic Pressure on Page 67.) engine.

Stop the telescopic handler engine, engage the parking Figure 94

brake, unfasten the seat belt and exit the telescopic
handler.

WARNING 1
3
Before you leave the operator’s position:
• Put the travel Direction Control Lever and the
Joystick in neutral.
• Engage the parking brake.
• Retract and lower the boom and attachment flat
on the ground.
• Stop the engine. Raise the restraint bar (if 2
equipped). S38870

SEE THE MACHINE OPERATION & MAINTENANCE

MANUAL FOR MORE INFORMATION.
W-2637-0607
Press the top of the Second Front Auxiliary Hydraulics
switch (Item 1) [Figure 94].

Disconnect the mixing bucket couplers from the NOTE: The Second Front Auxiliary Hydraulics switch
telescopic handler couplers. (See Hydraulic Quick (Item 1) [Figure 94] must be activated before
Couplers on Page 50.) you can engage or disengage the attachment
locking pins.
Figure 93
Turn the right thumb switch backward (Item 2) [Figure
94] to retract the locking pins.

EM5011

If your telescopic handler is equipped with a manual lock,

remove the safety pin (Item 2) to unlock the set. Remove
the locking bar (Item 1) [Figure 93].

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OPERATING PROCEDURE WITH TELESCOPIC LIFTING THE ATTACHMENT
HANDLERS (CONT’D)
Procedure
Removal (Cont’d)
Figure 96
Telescopic Handler Quick-Tach (Cont’d)

Figure 95 1
1

2
1

S20020

EM5006 EM6713 Install chains on the lifting points (Item 1) [Figure 96] on
both sides of the mixing bucket.

When the locking pins (Inset Item 1) are retracted, tilt the NOTE: Use chains that are in good condition and of
attachment frame forward (Item 1) and move backward adequate size to lift the attachment.
(Item 2) [Figure 95] away from the mixing bucket.
TRANSPORTING THE ATTACHMENT ON A TRAILER
Your mixing bucket is removed from your telescopic
handler. Fastening

NOTE: Before retracting the Quick-Tach locking pins, Figure 97

the mixing bucket must be placed to lie so that
the cutting edge is parallel to the ground
[Figure 95]. This position is equal to digging
into a sand pile.

WARNING
AVOID INJURY OR DEATH
• Always place the mixing bucket with the cutting
edge flat on the ground before removing from the
machine.
• Removing the mixing bucket with the mounting S20023

frame in the vertical position can cause the

mixing bucket to tip or roll resulting in serious
Install chains on the lifting points [Figure 97] on both
injury or death.
W-2879-0610
sides of the mixing bucket.

Secure the mixing bucket to the transport vehicle with the

NOTE: In muddy conditions or to prevent the chains.
attachment from freezing to the ground, put
the attachment on planks or blocks before NOTE: Use chains that are in good condition and of
removing the attachment from the machine. adequate size to lift the attachment.

NOTE: Use chain binders to prevent the attachment

from moving during transport.

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78 Mixing Bucket Operation & Maintenance Manual
 PREVENTIVE MAINTENANCE

MAINTENANCE SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

REGULAR MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

LUBRICATING THE ATTACHMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Lubrication Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

REMOVAL AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Chain Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Protective Grate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

ATTACHMENT STORAGE AND RETURN TO SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Return To Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

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 MAINTENANCE SAFETY
Instructions are necessary before operating or servicing machine. Read and
understand the Operation & Maintenance Manual, Operator’s Handbook and
WARNING
WARNING signs (decals) on machine. Follow warnings and instructions in the manuals
when making repairs, adjustments or servicing. Check for correct function after
adjustments, repairs or service. Untrained operators and failure to follow
instructions can cause injury or death. W-2003-0807

Safety Alert Symbol: This symbol with a warning statement, means: “Warning, be alert! Your safety is
involved!” Carefully read the message that follows.

CORRECT

P-90216

Never service attachments / implements without

instructions. See Operation & Maintenance Manual and
Attachment / Implement Service Manual.

Cleaning and maintenance are required daily.

Never service or adjust attachment / implement with the

engine running unless instructed to do so in manual.

Always lower the attachment / implement to the ground

before lubricating or servicing.

Avoid contact with leaking hydraulic fluid or diesel fuel

under pressure. It can penetrate skin or eyes.

Stop, cool and clean engine of flammable materials before

checking fluids.

Keep body, loose objects and clothing away from moving

parts, electrical contacts, hot parts and exhaust.

Safety glasses are needed for eye protection from electrical

arcs, battery acid, compressed springs, fluids under
pressure and flying debris or when tools are used. Use eye
protection approved for type of welding.

MSW30-0409

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TROUBLESHOOTING

Chart

PROBLEM CAUSE CORRECTION

Mixing bucket does not seat properly Bob-Tach pins are not fully retracted Retract Bob-Tach pins before
on the Bob-Tach. prior to installation. installing.
Mud, dirt or stones are lodged Remove debris between Bob-Tach and
between the Bob-Tach and the mixing mixing bucket.
bucket.
Mixing bucket does not seat properly Quick-tach locking pins are not fully Retract quick-tach locking pins before
on the quick-tach. retracted prior to installation. installing.
Mud, dirt or stones are lodged Remove debris between quick-tach
between the quick-tach and the mixing and mixing bucket.
bucket.
Mixing bucket does not operate. Loader main relief valve set too low. Adjust main relief valve to correct
setting.
Loader fluid reservoir is too low. Add hydraulic fluid to the fluid reservoir
on the loader.
Loader hydraulic pump not working. Check flow of the hydraulic pump.
Repair or replace as needed.
Damaged quick couplers. Replace quick couplers.
Auxiliary hydraulics not engaged. Engage auxiliary hydraulics.
Auger does not rotate Damaged hydraulic motor. Repair or replace.
Incorrect chain adjustment. Adjust drive chain.
Damaged sprockets and / or drive Repair or replace sprockets and / or
chain. drive chain.
Reverse valve damaged Replace
Auger vibrates excessively. Auger shaft bent. Replace shaft.
Auger shaft bearing(s) is / are worn or Replace auger shaft bearing(s).
damaged.
Deflector does not operate. Damaged cylinder. Repair or replace.

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REGULAR MAINTENANCE

Figure 98

S20017

WARNING
AVOID INJURY OR DEATH
Before servicing the Mixing Bucket:
• Fully lower the lift arms or boom and put Mixing
Bucket flat on the ground.
• Stop the engine and remove the key.
• Make sure all rotating parts have stopped.
W-2869-0510

The mixing bucket is built in such a way as to reduce

servicing to a minimum.

Wash the interior of the mixing bucket thoroughly after

every working day [Figure 98].

Protect fast couplings with the special rubber plugs.

Grease the bearings every 4 hours. Clean and grease

the bearings before storing the mixing bucket for an
extended period.

Grease the chain at least once per month. (See

Lubrication Locations on Page 85.)

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LUBRICATING THE ATTACHMENT Figure 101

Lubrication Locations

Always use a good quality lithium base grease when

lubricating the mixing bucket. Apply the lubricant until
extra grease shows.
1
Figure 99

S37088

1 Remove the chain guard to access the chain (Item 1)

[Figure 101]. (See Chain Guard on Page 86.)

Grease the chain (Item 1) [Figure 101].

S8904

Add grease to the fitting (Item 1) [Figure 99] on the back

WARNING
of the chaincase.
AVOID INJURY OR DEATH
Figure 100 Never operate with covers or guards removed.
W-2121-0788

S8885

Add grease to the fitting (Item 1) [Figure 100] on the left

side flange.

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REMOVAL AND INSTALLATION Protective Grate

Chain Guard Figure 103

MB250SD (S/N AC4800101 & Above)
Figure 102
2 2

1
S8886

S37076
Figure 104

Remove the eight chain guard bolts (Item 1) [Figure ALL OTHER MODELS
102].

Installation: Tighten the bolts to 15 N•m (11.1 ft-lb) 2

torque.

Remove the chain guard (Item 2) [Figure 102].

WARNING 1

AVOID INJURY OR DEATH

S37075
Never operate with covers or guards removed.
W-2121-0788

Inspect the protective grate (Item 1) [Figure 103] and

[Figure 104] for wear and / or damage.

Remove the nuts and washers (Item 2) [Figure 103] and

[Figure 104].

NOTE: Only the left side is shown in [Figure 104].

Installation: Tighten the nuts to 15 - 22 N•m (11 - 16 ft-

lb) torque.

Remove / replace the protective grate (Item 1) [Figure

103] and [Figure 104].

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86 Mixing Bucket Operation & Maintenance Manual
ATTACHMENT STORAGE AND RETURN TO SERVICE Return To Service

Storage After the Bobcat attachment has been in storage, it is

necessary to follow a list of items to return the
Sometimes it may be necessary to store your Bobcat attachment to service.
attachment for an extended period of time. Below is a list
of items to perform before storage. • Be sure all shields and guards are in place.

• Thoroughly clean the attachment. • Lubricate the attachment.

• Lubricate the attachment. • Install and operate attachment, check for correct
function.
• Inspect the welds on the attachment for wear and
damage. • Check for leaks. Repair as needed.

• Check for damaged or missing decals. Replace if

necessary.

• Check for loose hardware, missing guards, or

damaged parts.

• Replace worn or damaged parts.

• Place the attachment in a dry protected shelter.

• Place the attachment flat on the ground.

NOTE: In muddy conditions or to prevent the

attachment from freezing to the ground, put
the attachment on planks or blocks before
removing the attachment from the machine.

Always relieve the hydraulic pressure when

disconnecting the mixing bucket from the machine. Plug
the mixing bucket hydraulic ports when in storage. If
equipped with hoses, install caps on the hoses. Make
sure the plugs are installed on the hydraulic quick
couplers.

If storing for six months or longer, thoroughly grease the

mixing bucket to prevent corrosion.

If the mixing bucket is stored in a highly corrosive

environment, has high humidity or a coastal location,
grease and store the mixing bucket as recommended
above if the storage period is over thirty days.

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 SPECIFICATIONS

MIXING BUCKET SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Mixing Bucket MB200SD BT Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Mixing Bucket MB200SD BT Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Mixing Bucket MB250SD Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Mixing Bucket MB250SD Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Mixing Bucket MB250SD BT Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Mixing Bucket MB250SD BT Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Mixing Bucket MB250SD QT Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Mixing Bucket MB250SD QT Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Mixing Bucket MB600L Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Mixing Bucket MB600L Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Hydraulic Schematic Without Reverse Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Hydraulic Schematic With Reverse Valve (only for MB200SD BT with S/N AK1E00122 &
Above And MB250SD BT with S/N AK1C00208 & Above). . . . . . . . . . . . . . . . . . . . . . . . . 97

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MIXING BUCKET SPECIFICATIONS

Mixing Bucket MB200SD BT Dimensions

• Where applicable, specifications conform to ISO standards and are subject to change without notice.
• All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by
parentheses.

A C
EM9473

(A) Width 1347 mm (53 in)

(B) Height 899 mm (35.4 in)
(C) Length 732 mm (28.8 in)
(D) Step Width 165 mm (6.5 in)

Mixing Bucket MB200SD BT Specifications

Mixed concrete capacity 200 L (12205 ft³)

Weight of empty bucket with S/N AK1E00101 - AK1E00121 350 kg (772 lb)
Weight of empty bucket with S/N AK1E00122 & Above 355 kg (783 lb)
Maximum peak pressure 24 MPa (240 bar, 3480 psi)
Maximum intermittent pressure 17,5 MPa (175 bar, 2540 psi)
Maximum continuous pressure 14 MPa (140 bar, 2030 psi)
Maximum intermittent oil flow 75 L/min (20 gpm)
Maximum continuous oil flow 60 L/min (16 gpm)
Minimum recommended oil flow 45 L/min (11.9 gpm)

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MIXING BUCKET SPECIFICATIONS (CONT’D)

Mixing Bucket MB250SD Dimensions

• Where applicable, specifications conform to ISO standards and are subject to change without notice.
• All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by
parentheses.

C
D

B
A
EM7801

(A) Width 1494 mm (58.82 in)

(B) Step Width 130 mm (5.12 in)
(C) Height 917 mm (36.10 in)
(D) Depth 596 mm (23.46 in)
(E) Length 769 mm (30.28 in)

Mixing Bucket MB250SD Specifications

Capacity of concrete once mixed 250 L (15256 ft³)

Maximum capacity 300 L (18307 ft³)
Weight of empty bucket 380 kg (838 lb)
Recommended operating oil flow rate 40 L/min (10.6 gpm)
Maximum oil capacity on hydraulic motor 90 L (95.1 qt)
Working pressure 16 MPa (160 bar, 2320.6 psi)
Maximum pressure allowed on hydraulic motor 24,1 MPa (241 bar, 3495.4 psi)

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MIXING BUCKET SPECIFICATIONS (CONT’D)

Mixing Bucket MB250SD BT Dimensions

• Where applicable, specifications conform to ISO standards and are subject to change without notice.
• All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by
parentheses.

EM9406

(A) Width 1536 mm (60.5 in)

(B) Height 859 mm (33.8 in)
(C) Length 807 mm (31.8 in)
(D) Step Width 165 mm (6.5 in)

Mixing Bucket MB250SD BT Specifications

Mixed concrete capacity 250 L (15256 ft³)

Weight of empty bucket with S/N AK1C00101 - AK1C00207 370 kg (816 lb)
Weight of empty bucket with S/N AK1C00208 & Above 375kg (827 lb)
Maximum peak pressure 27,6 MPa (276 bar, 4000 psi)
Maximum intermittent pressure 24,1 MPa (241 bar, 3500 psi)
Maximum continuous pressure 20,7 MPa (207 bar, 3000 psi)
Maximum intermittent oil flow 91 L/min (24 gpm)
Maximum continuous oil flow 76 L/min (20.1 gpm)
Minimum recommended oil flow 45 L/min (11.9 gpm)

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MIXING BUCKET SPECIFICATIONS (CONT’D)

Mixing Bucket MB250SD QT Dimensions

• Where applicable, specifications conform to ISO standards and are subject to change without notice.
• All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by
parentheses.

A EM6743

(A) Width 1497 mm (59.0 in)

(B) Height 859 mm (33.8 in)
(C) Length 867 mm (34.1 in)

Mixing Bucket MB250SD QT Specifications

Mixed concrete capacity 250 L (15256 ft³)

Weight of empty bucket 370 kg (816 lb)
Maximum peak pressure 27,6 MPa (276 bar, 4000 psi)
Maximum intermittent pressure 24,1 MPa (241 bar, 3500 psi)
Maximum continuous pressure 20,7 MPa (207 bar, 3000 psi)
Maximum intermittent oil flow 91 L/min (24 gpm)
Maximum continuous oil flow 76 L/min (20.1 gpm)
Minimum recommended oil flow 45 L/min (11.9 gpm)

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MIXING BUCKET SPECIFICATIONS (CONT’D)

Mixing Bucket MB600L Dimensions

• Where applicable, specifications conform to ISO standards and are subject to change without notice.
• All dimensions are shown in millimeters. Respective imperial dimensions are given in inches enclosed by
parentheses.

C A

EM8515

(A) Width 1900 mm (74.8 in)

(B) Height 905 mm (35.6 in)
(C) Length 1005 mm (41.5 in)

Mixing Bucket MB600L Specifications

Mixed concrete capacity 600 L (36614 ft³)

Weight of empty bucket 630 kg (1389 lb)
Maximum peak pressure 30 MPa (300 bar, 4350 psi)
Maximum intermittent pressure 20 MPa (200 bar, 2900 psi)
Maximum continuous pressure 14 MPa (140 bar, 2030 psi)
Maximum intermittent oil flow 115 L/min (30.4 gpm)
Maximum continuous oil flow 75 L/min (19.8 gpm)
Minimum recommended oil flow 70 L/min (18.5 gpm)

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MIXING BUCKET SPECIFICATIONS (CONT’D)

Hydraulic Schematic Without Reverse Valve

7163226

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MIXING BUCKET SPECIFICATIONS (CONT’D)

Hydraulic Schematic With Reverse Valve (only for MB200SD BT with S/N AK1E00122 & Above And MB250SD
BT with S/N AK1C00208 & Above).

EM9407

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 WARRANTY

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WARRANTY

WARRANTY
BOBCAT ATTACHMENTS
DOOSAN BENELUX S.A. warrants to its authorised dealers who in turn warrant to the end-user / owner that each Bobcat
serial-numbered attachment will be free from proven defects in material and workmanship for twelve months after delivery
to the end-user / owner. A Bobcat Attachment is defined as being manufactured by Bobcat or having been approved and
sold by DOOSAN BENELUX S.A..

During the warranty period, the authorised Bobcat dealer shall repair or replace, at DOOSAN BENELUX S.A.'s option,
without charge for parts, labour and travel time of mechanics any part of the Bobcat product which fails because of defects
in material and workmanship. The end-user / owner shall provide the authorised dealer with prompt written notice of the
defect and allow reasonable time for replacement or repair. DOOSAN BENELUX S.A. may, at its option, request that failed
parts to be returned to the factory. Transportation of the Bobcat product to the authorised Bobcat attachment dealer for
warranty work is the responsibility of the end-user / owner.

Service schedules must be adhered to, documented and genuine parts / lubricants must be used. The warranty does not
cover oils, lubricants and replacement of scheduled service items and / or high wear items. Pins and bushings are
considered to be normal consumable items and are not warranted.

The warranty does not cover damages resulting from abuse, accidents, alterations, use of the Bobcat product as an
attachment on any equipment not approved by Bobcat, air flow obstructions, or failure to maintain or use the Bobcat product
according to the instructions applicable to it.

DOOSAN BENELUX S.A. EXCLUDES OTHER CONDITIONS, WARRANTIES OR REPRESENTATIONS OF ALL KINDS,
EXPRESSED OR IMPLIED, STATUTORY OR OTHERWISE (EXCEPT THAT OF TITLE) INCLUDING ALL IMPLIED WARRANTIES
AND CONDITIONS RELATING TO MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR
PURPOSE.

CORRECTIONS BY DOOSAN BENELUX S.A. OF NONCONFORMITIES WHETHER PATENT OR LATENT, IN THE MANNER
AND FOR THE TIME PERIOD PROVIDED ABOVE, SHALL CONSTITUTE FULFILMENT OF ALL LIABILITIES OF DOOSAN
BENELUX S.A. FOR SUCH NONCONFORMITIES, WHETHER BASED ON CONTRACT, WARRANTY, TORT, NEGLIGENCE,
INDEMNITY, STRICT LIABILITY OR OTHERWISE WITH RESPECT TO OR ARISING OUT OF SUCH PRODUCT.

THE REMEDIES OF THE END-USER / OWNER SET FORTH UNDER THE PROVISIONS OF THE WARRANTY OUTLINED
ABOVE ARE EXCLUSIVE AND THE TOTAL LIABILITY OF DOOSAN BENELUX S.A. INCLUDING ANY HOLDING, SUBSIDIARY,
ASSOCIATED OR AFFILIATED COMPANY OR DISTRIBUTOR WITH RESPECT TO THIS SALE OR THE PRODUCT AND
SERVICE FURNISHED HEREUNDER IN CONNECTION WITH THE PERFORMANCE OR BREACH THEREOF, OR FROM
DELIVERY, INSTALLATION, REPAIR OR TECHNICAL DIRECTION COVERED BY OR FURNISHED UNDER THIS SALE,
WHETHER BASED ON CONTRACT, WARRANTY, TORT, NEGLIGENCE, INDEMNITY, STRICT LIABILITY OR OTHERWISE
SHALL NOT EXCEED THE PURCHASE PRICE OF THE PRODUCT UPON WHICH SUCH LIABILITY IS BASED.

DOOSAN BENELUX S.A. INCLUDING ANY HOLDING, SUBSIDIARY, ASSOCIATED OR AFFILIATED COMPANY AND
DISTRIBUTOR SHALL IN NO EVENT BE LIABLE TO THE END-USER / OWNER, ANY SUCCESSORS IN INTEREST OR ANY
BENEFICIARY OR ASSIGNEE RELATING TO THIS SALE FOR ANY CONSEQUENTIAL, INCIDENTAL, INDIRECT, SPECIAL OR
PUNITIVE DAMAGES ARISING OUT OF THIS SALE OR BY ANY BREACH THEREOF, OR ANY DEFECT IN, OR FAILURE OF,
OR MALFUNCTION OF THE PRODUCT UNDER THIS SALE, WHETHER BASED UPON LOSS OF USE, LOST PROFITS OR
REVENUE, INTEREST, LOST GOODWILL, WORK STOPPAGE, IMPAIRMENT OF OTHER GOODS, LOSS BY REASON OF
SHUTDOWN OR NON-OPERATION, INCREASED EXPENSES OF OPERATION OR CLAIMS OF USER OR CUSTOMERS OF
THE USER FOR SERVICE INTERRUPTION WHETHER OR NOT SUCH LOSS OR DAMAGE IS BASED ON CONTRACT,
WARRANTY, TORT, NEGLIGENCE, INDEMNITY, STRICT LIABILITY OR OTHERWISE.

4700005-EN (1-10) Printed in Belgium

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 ALPHABETICAL INDEX

ATTACHMENT IDENTIFICATION . . . . . . . . 14
ATTACHMENT STORAGE AND RETURN TO
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
BOBCAT COMPANY IS IS0 9001 CERTIFIED
11
DAILY INSPECTION . . . . . . . . . . . . . . . . . . 37
DECLARATION OF CONFORMITY . . . . . . . 7
DELIVERY REPORT . . . . . . . . . . . . . . . . . . 13
FEATURES AND ACCESSORIES . . . . . . . . 19
FIRE PREVENTION . . . . . . . . . . . . . . . . . . 25
LIFTING THE ATTACHMENT . . . . . . . . . . . 78
LUBRICATING THE ATTACHMENT . . . . . . 85
MACHINE SIGNS (DECALS) . . . . . . . . . . . 27
MAINTENANCE SAFETY . . . . . . . . . . . . . . 81
MANUAL STORAGE LOCATION . . . . . . . . . 13
MIXING BUCKET SPECIFICATIONS . . . . . 91
OPERATING PROCEDURE WITH LOADERS
41
OPERATING PROCEDURE WITH
TELESCOPIC HANDLERS . . . . . . . . . . . . . 57
REGULAR MAINTENANCE . . . . . . . . . . . . 84
REMOVAL AND INSTALLATION . . . . . . . . . 86
SAFETY INSTRUCTIONS . . . . . . . . . . . . . . 23
SERIAL NUMBER LOCATION . . . . . . . . . . 12
TRANSPORTING THE ATTACHMENT ON A
TRAILER . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
TROUBLESHOOTING . . . . . . . . . . . . . . . . . 83
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . 101

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