D4K2

Track-Type Tractor

Engine Weights
Engine Model* Cat® C4.4 ACERT™ Operating Weight – XL 8201 kg 18,080 lb
Rated Net Power at 2,200 rpm Operating Weight – LGP 8510 kg 18,761 lb
SAE J1349 68.8 kW 92 hp *Engine meets U.S. EPA Tier 4 Interim/EU Stage IIIB/Japan MLIT Step 4
ISO 9249/EEC 80/1269 68.8 kW 92 hp emission standards.
Simply the
smoothest
finish grading
tractor in
the industry.
Period.

Contents
Operator Station..................................................4
Hydrostatic Transmission ..................................6
Engine ...................................................................6
Undercarriage .....................................................7
AccuGrade™ Systems .......................................8
Blade and Attachments .....................................9
Serviceability and Customer Support............10
Specifications ....................................................11
Standard Equipment .........................................14
Optional Equipment...........................................15
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Experience the most intuitive finish grading tractor in the industry. The Cat® D4K2
Track-Type Tractor with Stable Blade delivers a smooth finish grade with less operator
effort. Stable Blade senses ground conditions and works with the operator to produce
the desired grade. The addition of the integrated AccuGrade™ grade control system
helps you get to target grade even faster, with fewer passes and less manpower.
From the first cut to finish grade, the D4K2 sets the standard.
3
Operator Station
Everyone can get comfortable in this cab.

Seat-Mounted Joystick Controls

Ergonomically designed, seat-mounted controls isolate vibrations
from the operator for optimum comfort and precise control.
• New contoured armrest cushion
• Bi-directional transmission shifting
• Easy to grip handles
• New heated control handles (optional)

4
Stable Blade Control
New Stable Blade control makes operating the machine easy
for both new and experienced operators.
• Stable Blade complements operator input for smooth finish
grading results
• Handle fits to hand to allow for more precise control
and reduce operator fatigue
• Thumb roller for low effort blade angle control
• Blade shake feature for easy removal of material

All Day Comfort

The spacious, comfortable cab helps keep you relaxed
and productive throughout the day.
• Quiet environment – 78 dB(A) – ANSI/SAE J1166 OCT98
• Wide door openings for easy entry/exit
• Dash mounted air vents for improved air circulation
• Air suspension seat for a more comfortable ride
• Air conditioning for greater comfort in all climates
• New ventilated seat (optional)
• Heated seat and heated control handles (optional)

Monitoring Package
Easy to read display provides vital system information. Easy to read
gauges keep you informed of system conditions. Larger AccuGrade™
CB460 GPS display is available as an option and is mounted in line
with blade corners for easy viewing.

Outstanding Visibility
Large door windows provide an unobstructed view to the blade corners
and cutting edge which is especially important in fine grading, curbing
and working against foundations. Large side windows offer a clear view
to the sides of the machine.

5
Hydrostatic Transmission
Responsive to changing loads.

Traction Control
Increase your productivity with the new Traction Control
feature:
• Reduces track slippage
• Activated with a button on the transmission control
• Reduces undercarriage wear
• Improves fuel economy

Performance
Quick response to varying loads for shorter cycle times
and less operator fatigue.

Maneuverability
• Intuitive control helps you work in tight areas
• Power turn feature provides power to both tracks while
working in confined areas
• Counter-rotation provides quick steering corrections
during side loading applications

Engine
Increased horsepower, improved fuel economy.

Cat C4.4 Engine

The C4.4 engine responds quickly to changing
loads. Eco mode throttle setting can deliver up
to 25% improved fuel economy. Engine meets
U.S. EPA Tier 4 Interim, EU Stage IIIB and Japan
MLIT Step 4 emission standards using a passive
regeneration solution:
• Simple…no operator interaction required
• Long life diesel particulate filter (no service
required for 8,000 hours)

6
 Undercarriage
Solutions to lower your costs per hour.

Choice of Undercarriage Configurations to Meet Your Application

Track frames are available in extra long (XL) or low ground pressure (LGP) configurations:
• XL undercarriage for most applications where flotation and side stability are not extreme
• LGP undercarriage for soft underfoot conditions where additional flotation is required

Track Selections
Caterpillar offers a choice of two undercarriages – Sealed and Lubricated Track (SALT) and SystemOne™.
Matching the correct undercarriage to the application and soil conditions will deliver the lowest costs per hour.
• Sealed and Lubricated Track (SALT) Undercarriage
– For applications where the track is not bushing limited
– May require pin and bushing turn
• SystemOne™ Undercarriage
– For applications where track is bushing limited
– Bushing rotates continuously
– Does not require bushing turn
– Designed to maximize the life of all undercarriage components

7
AccuGrade™ Systems
Grade with increased accuracy.

Improve Your Efficiency with AccuGrade

AccuGrade is a fast machine grade control system which enables operators to cut and
fill to grade with increased accuracy, minimizing the need for traditional stakes and grade
checkers. Caterpillar offers a choice of Laser, GNSS or Universal Total Station solutions:
• AccuGrade Laser – for two dimensional flat type work
• AccuGrade GNSS – for three dimensional cut to contour work
• Universal Total Station – for fine and finish grade applications

New Larger Displays

Easy to read, large displays let you focus on your work:
• CB450 Laser Display
– Larger 109 mm (4.3 in) color display
• CB 460 GNSS Display
– Larger 178 mm (7 in) color display
– USB data port
– 3.7 gig internal disk space

8
 Blade and Attachments
Power pitch blade for maximum productivity.
Power Pitch Blade
The power pitch blade feature lets the operator adjust
the blade pitch to meet various operating conditions
without ever leaving the cab.
• Pitch the blade forward for increased penetration
• Lay the blade back for maximum carrying capacity
• Change the pitch from inside the cab
• Optimize blade pitch for application
• Improves productivity

VPAT Blade
The VPAT blade is specifically designed for finish grading,
backfilling ditches, cutting V ditches, windrowing, fill
spreading, medium land clearing and heavy dozing.
Built for rugged strength and durability this 6-way blade
allows for maximum angle, tilt and pitch.

Hydrostatic Winch
The Cat hydrostatic winch features:
• Excellent line pull at any speed
• Infinitely variable drum speed
• Lower operator effort
• Unmatched load control

Parallelogram Ripper
The aggressive parallelogram ripper lets you do more productive ripper
work. The parallel linkage design provides better penetration and
maneuverability in tight working areas.

Forestry Options
An easier way to work in the woods. The following features are available
for forestry applications:
• Cat hydrostatic winch
• 360 degree guarding, for added protection of the cab
• Heavy-duty rear tank guard

9
Serviceability and Customer Support
Easy service and unmatched support keep you working.

Easy Access
Long service intervals and easy maintenance keep
the machine up and running to lower your owning
and operating costs.
• Large, hinged door on the left side of the engine
compartment for easy access to all regular engine
maintenance points
• Grouped pressure taps for quick testing and
troubleshooting of the hydraulic system
• Easy ground level access to hydraulic filters located
in the left rear service compartment

Product Link
The optional Product Link system simplifies equipment fleet
tracking. Using satellite or cellular technology, the system
automatically reports information such as location, machine
hours, active and logged service codes and security alarms.

Renowned Cat Dealer Support

From helping you choose the right machine to
knowledgeable ongoing support, Cat dealers provide the
best in sales and service.
• Preventive maintenance programs and guaranteed
maintenance contracts
• Best-in-class parts availability
• Operator training to help boost your profits
• Genuine Cat Remanufactured parts
• SITECH® dealer support for grade control solutions

10
 D4K2 Track-Type Tractor Specifications

Engine Transmission
Engine model Cat C4.4 ACERT Drive pumps 2
Rated Net Power @ 2,200 rpm Track motors 2
SAE J1349 68.8 kW 92 hp Relief valve settings 47 700 kPa 6,918 psi
ISO 9249/EEC 80/1269 68.8 kW 92 hp Maximum travel speed – forward 9 km/h 5.6 mph
Bore 105 mm 4.13 in Maximum travel speed – reverse 10 km/h 6.2 mph
Stroke 127 mm 5 in • Dual-path, closed loop hydrostatic drive provides infinitely
Displacement 4.4 L 269 in3 variable speeds from 0-9 km/h (0-5.6 mph) forward and 0-10 km/h
(0-6.2 mph) reverse.
• Ratings at 2,200 rpm.
• Full-flow filtering of hydrostatic charge system oil.
• Net power advertised is the power available at the flywheel when
• Drive pumps: two variable-displacement, slipper-axial piston
engine is equipped with fan, air cleaner, muffler and alternator.
pumps mounted tandem-style to engine flywheel housing.
• No derating required up to 3000 m (9,843 ft) altitude.
• Track motors: two variable-displacement, link-type piston motors.
Weights Service Refill Capacities
Operating weight – XL 8201 kg 18,080 lb
Fuel tank 195 L 51.5 gal
Operating weight – LGP 8510 kg 18,761 lb
Crankcase and filter 11 L 2.91 gal
• Specifications shown are for machine equipped with dozer blade, Final drives, XL (each side) 10 L 2.6 gal
canopy ROPS, back-up alarm, operator, coolant, lubricants and
full fuel tank. Final drives, LGP (each side) 10 L 2.6 gal
Cooling system 22.4 L 5.92 gal
Drawbar Transmission/hydraulic tank 59.5 L 15.7 gal

lb N
Drawbar Pull Hydraulic Controls
180
38.3 Pump output 73.5 L/min 19.4 gal/min
160
33.8
Relief valve setting 20 600 kPa 2,988 psi
Drawbar Pull x 1000 N (lb)

140 • Pump output ratings at 2,150 rpm and 6895 kPa (1,000 psi).
29.3 • Control positions:
120 – Lift cylinders – raise, hold, lower, float.
24.8 – Tilt cylinders – left, hold, right.
100 – Angle cylinders – left, hold, right.
20.3 – Ripper cylinders – raise, hold, lower.
80
15.8
Final Drive
60
11.3
Features:
40
• Double-reduction planetary gear set.
6.8
• Mounted independently of track frames to isolate them from
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machine weight and ground-induced shock loads.
2.3
0

0
1
1.2
3
2.5
5
3.7
7
5.0
9
6.2
km/h
mph
Steering and Braking
Speed Features:
• Full powerturn.
• Counter-rotation.
• Single lever steering, speed and direction control.
• Hydrostatic (dynamic) braking through machine drive system
using transmission control lever, center brake pedal or decel pedal.

11
D4K2 Track-Type Tractor Specifications

Undercarriage Ripper
Number of rollers (each side) 7 Type Parallelogram
Number of shoes (each side) – SALT 43 Number of shanks 3
(Sealed and Lubricated Track) Maximum digging depth 337.5 mm 13.3 in
Undercarriage
Maximum reach at ground line 596 mm 23.5 in
Number of shoes (each side) – 38
Maximum ground clearance under tip 448 mm 17.6 in
SystemOne Undercarriage
Overall width 1710 mm 67.3 in
Shoe width – XL 460 mm 18 in
Height 165 mm 6.5 in
Shoe width – LGP 635 mm 25 in
Weight 554 kg 1,222 lb
Length of track on ground – XL 2248 mm 89 in
Length of track on ground – LGP 2248 mm 89 in Winch
Track gauge – XL 1550 mm 61 in
Weight 610 kg 1,345 lb
Track gauge – LGP 1725 mm 68 in
Winch drive Hydrostatic
Ground contact area – XL 20 682 cm2 3,206 in2
Control Hydraulic
Ground contact area – LGP 28 550 cm2 4,425 in2
Speed Variable
Ground pressure – XL 38.6 kPa 5.6 psi
Winch length 705 mm 27.76 in
Ground pressure – LGP 29.2 kPa 4.2 psi
Overall width 741 mm 29.2 in
• Hydraulic track adjusters.
• Box section track roller frames. Drum diameter 254 mm 10 in
• Bolt-on rear track guiding guards. Drum width 274 mm 10.8 in
• Full length recoil guarding with sprocket guards and wipers. Throat clearance 171.5 mm 6.75 in
• Master link – SystemOne and SALT.
Rope diameter – recommended 16 mm 0.63 in
• Single-grouser shoes.
• Segmented sprocket (SALT). Rope diameter – optional 19 mm 0.75 in
• Sealed and lubricated rollers and idlers. Drum capacity – recommended cable 113 m 371 ft
Drum capacity – optional cable 78 m 256 ft
Standards Maximum line pull – bare drum 18 144 kg 40,000 lb
Sound levels: Maximum line pull – full drum 11 340 kg 25,000 lb
ISO 6396:2008 77 dB(A) Maximum line speed – bare drum 40 m/min 131 ft/min
SAE J1166 FEB2008 78 dB(A) Maximum line speed – full drum 63 m/min 207 ft/min
ROPS SAE J397-OCT95, • Infinitely variable line speed and line pull from 0 to maximum.
SAE J1040-MAY94, • Power in/power out, brake off, free spool (standard equipment).
ISO 3471-94, ISO 3164-95 • Single lever, low effort hydraulic control.
FOPS SAE J231-JAN81, • Precise load control and speed modulation.
ISO 3449-92 • Integral mounted drawbar.
• 3 roller fairlead available. Kit available to add a 4th roller.

12
Dimensions
All dimensions are approximate.

2716 mm
5 (106.9")

8
9
6
11

10
1
4
2

7 3

Grouser Height: 47 mm (1.9")

XL LGP
1 Track gauge 1550 mm 61 in 1725 mm 67.9 in
2 Width of tractor (standard shoes, no blade) 2010 mm 79.1 in 2360 mm 92.9 in
3 Overall length (with blade) 4274 mm 168.3 in 4274 mm 168.3 in
4 Length of basic tractor (without blade) 3275 mm 128.9 in 3275 mm 128.9 in
5 Tractor height 2763 mm 108.8 in 2763 mm 108.8 in
6 Ground clearance 332 mm 13 in 332 mm 13 in

BLADE XL Intermediate LGP

7 Blade width 2782 mm 109.5 in 2921 mm 115 in 3149 mm 124 in
8 Blade height 1010 mm 39.8 in 860 mm 33.9 in 910 mm 35.8 in
9 Blade lift height 743 mm 29.3 in 743 mm 29.3 in 708 mm 27.9 in
10 Digging depth 573 mm 22.5 in 590 mm 23.2 in 590 mm 23.2 in
11 Blade cutting edge angle, adjustable 52° to 58° 52° to 58° 52° to 58°
Maximum tilt 387 mm 15.2 in 448 mm 17.6 in 438 mm 17.2 in
Maximum angle (either side) 25° 25° 25°
Blade width at maximum angle 2542 mm 100.1 in 2669 mm 105.1 in 2874 mm 113.1 in
Blade capacity (SAE) 1.98 m3 2.59 yd3 1.50 m3 1.96 yd3 1.85 m3 2.42 yd3

13
D4K2 Standard Equipment

Standard equipment may vary. Consult your Cat dealer for details.

ELECTRICAL HYDRAULICS • UNDERCARRIAGE

• Alternator, 12 volt, 120 Amp, heavy duty • Hydraulics, 3 valve • SALT Undercarriage
• Alarm, backup • Load sensing hydraulics • 7 roller track frame
• Batteries, two, heavy duty, maintenance • Single lever, three function control • Track rollers, lifetime lubricated
free, 750 CCA • Hydraulic pump and oil • Carrier rollers
• Diagnostic connector • Stable blade control • Track adjusters, hydraulic
• Horn, electric • Guards, front/rear guiding
• Lights, halogen, 2 front and 2 rear POWER TRAIN • Master link
• Starter, electric, 12 volt • Cat C4.4 ACERT™ diesel engine,
turbocharged, U.S. EPA Tier 4 Interim • OTHER STANDARD EQUIPMENT
OPERATOR STATION and EU Stage IIIB certified with • C-Frame, VPAT, hydraulic cylinders
• ROPS/FOPS canopy aftertreatment and lines
• Seat, air suspension, cloth or vinyl • Aftercooler, Air-to-Air (ATAAC) • Lockable engine enclosures
• Seatbelt, retractable 76 mm (3 in) • Aluminum bar plate cooling system • Front pull device
• Foot pads, dash (radiator, power train) • Rigid drawbar
• Electronic Monitoring System with: • Air cleaner with precleaner, automatic • Ecology drains (engine, power train
dust ejection and under-hood intake and implement oil and engine coolant)
– Gauges for engine coolant temperature,
hydraulic oil temperature and fuel level • Dual path, closed-loop hydrostatic • Scheduled oil sampling ports
transmission (engine, power train implement oil)
– Travel speed limiter, electronic
• Electric fuel priming pump • Vandalism protection
– Engine RPM and gear display
• Fuel/water separator • Heavy duty crankcase guard
– Hour meter, electric
• Traction Control
– Engine air cleaner service indicator,
electronic • ANTIFREEZE
– Water-in-fuel indicator, electronic • Extended life coolant, –37° C (–35° F)
• Throttle switch, rotary
• Eco mode
• Controls, seat mounted, fore/aft adjustment
• Armrests, adjustable
• Mirror, rearview, inside
• Single pedal combining deceleration
and braking functions
• Independent forward/reverse speed settings
• Power port, 12 volt
• Coat hook
• Storage compartment
• Cup holder
• Floor mat, rubber, heavy duty

14
 D4K2 Optional Equipment

Optional equipment may vary. Consult your Cat dealer for details.

ELECTRICAL HYDRAULICS REAR ATTACHMENT CONTROL

• Integrated four front halogen lights, • Hydraulics, 4 valve for use with ripper • Control, ripper
two rear halogen lights • Hydraulics, 4 valve for use with winch • Control, winch
• Control, ripper and winch
POWER TRAIN GUARDS
• Drive, auxiliary • Guard, rear, heavy duty MACHINE CONTROL AND GUIDANCE
• Installation, winch • Grill, radiator, heavy duty • Installation, AccuGrade ready
• Guard, track guiding, center • Power Pitch blade control
UNDERCARRIAGE • Guard, track roller, full length
• Track Pairs, XL: • Screen, rear, cab STARTING AIDS
– Track, 460 mm (18 in) MS SystemOne™ • Screen, side, cab • Heater, engine, coolant, 120 volt
• Track Pairs, LGP: • Screen, rear, canopy • Starting aid, ether
– Track, 635 mm (25 in) MS SystemOne™ • Screen, front and doors, canopy
• Sweeps, front OTHER ATTACHMENTS
OPERATOR STATION • Sweeps, rear • Machine Security System
• Cab with air conditioning • Cat Product Link 321
• Cab, polycarbonate windows BLADES • Cat Product Link 121
and air conditioning • VPAT XL blade • Cat Product Link 522
• Seat, air suspension, choice of: • VPAT LGP blade
– Vinyl, heated seat with heated controls • VPAT Intermediate blade ANTIFREEZE
– Cloth, heated seat with heated controls • Extended life coolant, –50° C (–58° F)
– Cloth, heated and ventilated seat REAR ATTACHMENTS
with heated controls • Drawbar, towing FIELD INSTALLED ATTACHMENT
• Radio, AM/FM, CD player • Mounting, winch • Winch, hydrostatic
• Sound suppression • Ripper, parallelogram,
includes three shanks and teeth

15
D4K2 Track-Type Tractor

For more complete information on Cat products, dealer services, and industry solutions,
visit us on the web at www.cat.com
AEHQ6686 (03-2012)
© 2012 Caterpillar Inc.
All rights reserved

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in photos may include additional equipment. See your Cat dealer for available options.

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