Pillow Blocks and IP Unitized Spherical

RollerInstallation
Bearingand Pillow Blocks, Flanges,
Parts Replacement
Replacement Manual
5) Shipping
Installation and Parts
Installation and Replacement
Parts ManualManual
Piloted Flanges For &Take-Ups
For For
If BLO units are supplied with shafting as an assembly from Baldor Electric Company they will arrive without oil. Units
need to be filled with oil prior to start up to the static oil level indicated as the center of the static oil sight window (P/N
22) located on the side of the housing. The following are approximate oil quantity in liters and should only be used as
ref.INFORMATION
GENERAL 2. Before mounting bearing to shaft, remove
Dodge
Dodge ® ® TORQUE-ARM™
TORQUE-ARM™
Dodge ® TORQUE-ARM™
DODGE ISAF and IP Spherical Roller Bearing
mounted units incorporate a unique way ofUnit sealing,
Size
lockplate from bearing and turn locknut
counterclockwise one to two turns to allow adapter
Oil Qty
to (Liters)
expand fully. The unit is now shaft ready. Slide
TXT
TXTTXT Double
Double
Double Reduction
mounting, and dismounting the unit to and
Reduction
Reduction
BLO-40A the
shaft. The patented sealing system (Pat. BLO-45A
from
#5,908,249)
BLO-50A
has proven effective in protecting the internal bearing
0.9 L
the bearing to the desire position on the shaft.
0.9 L
1.5 L

Taper
Taper Bushed and
and and
Bushed Straight
components, due to its constant pressure,
Taper Bushed Straight Bore
BLO-55A
while still
BoreBore
StraightBLO-60A The
allowing a full + or –1 degree of misalignment..
patented IMPERIAL system (Pat. #5,489,156) BLO-65A
pulls the
1.5 L
Keep
2.2 L
weight
mounting
2.2 L via a
off bearing
sling or jacks.
during

Speed
Speed Reducers
Reducers
BLO-70A
bearing on the adapter based upon a predetermined
Speed Reducers BLO-75A
clockwise rotation of the locknut. Dismounting
BLO-80A is
3.0 L
3.0 L
4.0 L
accomplished via counterclockwise rotation BLO-85A of the 4.0 L
locknut. Keep in mind that the thread on theBLO-90A as
locknut 6.0 L
well as on the adapter is a left-hand threadBLO-95A 6.0 L
BLO-100A 6.0 L

TXT/HXT TXT/HXT 1A TXT/HXT TXT/HXT 5C TXT 8A

8A
that 1A
TXT/HXT 1A 5C 5C
TXT/HXT TXT 8A
TXT
WARNING BLO-110A 6.0 L
To ensure drive is not unexpectedly started, BLO-120A 10.0 L
turn-offTXT/HXT 2A
and lock out or tag TXT/HXT
power source before 6A BLO-130A 18.0 L
TXT 9A
9A
TXT/HXT TXT/HXT
proceeding. 2Ato observe
Failure 2A TXT/HXT
these 6A 6A
TXT/HXT TXT 9A
TXT
TXT/HXT
TXT/HXT 3B 3B 3B TXT/HXT
precautions could result in bodily injury.
TXT/HXT TXT/HXT 7A
7A 7A
TXT/HXT
If BLO units are mounted with Fan wheel and coupling assembly’s ship unit with oil fill volume of 1/8 of the listed
volume in table above. Upon installation drain oil from housing and follow above oil fill instructions.
TXT 10A
TXT 10A
TXT 10A
TXT/HXT TXT/HXT
TXT/HXT
INSPECTION
4B 4B
6) Maintenance
4B
Inspect shaft. Ensure that the shaft is smooth, straight,
Check oil level on regular intervals in static condition.
clean, and within commercial tolerance. Inspect unit.
Includes
Includes Char-Lynn Char-Lynn
Do not allow unit to be exposed to any dirt or moisture.
Includes Char-Lynn 6B Hydroil
6B Hydroil
6B Hydroil
Reducers Reducers
Reducers
Drain oil after first 300 to 500 hours of operation and examine condition of oil. The test results will be an indication for
Picture 1
the relubrication interval. Fresh air fans require oil change after 2,000 hours of operating. Hot gas fans after 1,000

HXTMOUNTINGHXT
HXT 3B –– 6B
6B
3B 6B HXT 5C
findings during initial oil testing.
HXT
HXT – 5C –– 6B
6B
5C 6B HXT 7A HXT
HXT – 7A –– 6B
6B
7A 6B
hours. General recommendations are 5,000 hours for fresh air fans and 2,000 hours for hot gas fans depending on
3B – 3. Proper locking of this unit to the shaft is based on

1. Apply
HXT
HXT 4B
4B
a coating
–
– 6B
of light
6B
Install the non-expansion unit first.
HXT 4B – 6B oil or otherHXT 6AHXT
HXT
rust inhibitor
6A
to– 6B
– 6B of degrees shown for each bore size on
turning the locknut clockwise a predetermined
6A –number
6B
Table 1.
the adapter area of the shaft.

WARNING: Because of the possible danger to persons(s) or property from accidents which may result from the improper use of products, it is
WARNING:
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that correct of the possible
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familiar with the construction and operation of all equipment in the system and the potential hazards involved. When risk to persons or property
suitable safety devices
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safety procedures,
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Rockwell Automation – Dodge/Reliance / P.O. Box 499 / 6040 Ponders Court / Greenville, SC 29602-0499 USA
Baldor Automation
Electric
Rockwell Tel: Company
Rockwell864-297-4800 Headquarters
–Automation
Dodge/Reliance / P.O. Box 499
– Dodge/Reliance
/ Fax: 864-281-2433 / 6040
/ /P.O.
E-mail:BoxPonders
499 / 6040Court / Greenville,
Ponders
adv@powersystems.rockwell.comCourt SC 29602-0499
/ Greenville, USA
SC 29602-0499 USA
Tel:P.O. Box 2400,Tel:Fort
864-297-4800 /Smith,
Fax: AR
864-297-4800 72902-2400
864-281-2433 U.S.A., Ph: (1)
/ E-mail:
/ Fax: 864-281-2433 479.648.5792, Fax (1) 479.648.5792, International Fax (1) 479.648.5895
adv@powersystems.rockwell.com
/ E-mail: adv@powersystems.rockwell.com
DODGE/Reliance Division
6040 Ponders © Court,
2004 Rockwell
Greenville, Automation
SC 29615-4617 U.S.A., Ph: (1) 864.297.4800, FAX: (1) 864.281.2433
© 2004 Rockwell
©
Copyright © 2007
2004
Dodge Automation
® Rockwell
Baldor Electric
Automation
and TORQUE-ARM™
Company All Rightsare registered
Reserved. Printed Trademarks
in USA. of Rockwell Automation.
Dodge® and TORQUE-ARM™
Dodge® and TORQUE-ARM™ are registeredare Trademarks
registered of Rockwell Automation.
Trademarks of Rockwell Automation.
04/07 5C-K This material is not intended to provide operational instructions. Appropriate instruction
Printed in USA manuals and precautions should be studied prior to installation,09/04 499304
operation or maintenance
Printed in USA Printed in USA of equipment. 09/04 49930409/04 499304
IM499304
IM499304 IM499304
1
1 1
 CONTENTS

TORQUE-ARM REDUCER INSTALLATION………………..…... 3

TORQUE-ARM BUSHING INSTALLATION………...…………… 4

LUBRICATION………………………………………………………. 5

OIL VISCOSITY EQUIVALENCY CHART……………………….. 7

GUIDELINES FOR TORQUE-ARM REDUCER

LONG-TERM STORAGE…………………………………………… 8

MOTOR MOUNTS………...………………………………………… 9

REPLACEMENT OF PARTS………………...…………………….. 10

REPLACEMENT PART AND KIT NUMBERS………...…………. 12

TXT1A & TXT2A REDUCER SECTION VIEW…………………… 14

TXT1A & TXT2A DETAILED PARTS LIST………………………. 15

TXT3B, TXT4B, & TXT5C REDUCER SECTION VIEW..………. 17

TXT3B, TXT4B & TXT5C DETAILED PARTS LIST…………….. 18

TXT6A thru TXT10A REDUCER SECTION VIEW……………… 21

TXT6A thru TXT10A DETAILED PARTS LIST………………….. 22

ACTUAL RATIOS……………………………………………………. 24

2
INSTALLATION 3. Mount reducer on driven shaft as follows:

1. Use lifting bracket where applicable to lift reducer. WARNING: To ensure that drive is not unexpectedly started,
turn off and lock out or tag power source before proceeding.
2. Determine the running positions of the reducer. (See Fig. 1) Remove all external loads from drive before removing or
Note that the reducer is supplied with six plugs; four around the servicing drive or accessories. Failure to observe these
sides for horizontal installations and one on each face for precautions could result in bodily injury.
vertical installations. These plugs must be arranged relative to
the running positions as follows: For Taper Bushed Reducer: Mount the reducer on the driven
shaft per instruction sheet No. 499629 packed with the tapered
Horizontal Installations - Install the magnetic drain plug in the bushing kit.
hole closest to the bottom of the reducer. Install the
filter/ventilation plug in topmost hole. Of the two remaining 4. Install sheave on input shaft as close to reducer as practical.
plugs on the sides of the reducer, the lowest plug is the (See Fig. 2)
minimum oil level plug.
5. If not using a Dodge Torque-Arm motor mount, install motor
Vertical Installations - Install the filter/ventilation plug in the and V-belt drive so belt will approximately be at right angles to
hole provided in the upper face of the reducer housing. If space the centerline between driven and input shaft. (See Fig. 3) This
is restricted on the upper face, install the vent in the highest hole will permit tightening the V-belt with the torque arm.
on the side of the reducer per Figure 1 using the optional
vertical vent kit. Install a plug in the hole in the bottom face of 6. Install torque arm and adapter plates using the long reducer
the reducer. Do not use this hole for the magnetic drain plug. bolts. The adapter plates may be installed in any position
Install the magnetic drain plug in the lowest hole on the sides of around the input end of the reducer.
the reducer. Of the remaining holes on the sides of the reducer,
use the plug in the upper housing half for the minimum oil level 7. Install torque arm fulcrum on a flat and rigid support so that
plug. the torque arm will be approximately at right angles to the
centerline through the driven shaft and the torque arm anchor
Figure 1 – Mounting Positions screw. (See Fig. 4) Make sure that there is sufficient take-up in
the turnbuckle for belt tension adjustment when using V-belt
drive.

CAUTION: Unit is shipped without oil. Add proper amount of

recommended lubricant before operating. Failure to observe
this precaution could result in damage to or destruction of the
equipment

8. Fill gear reducer with the recommended volume of lubricant

per table 2.

● Below 15 RPM output speed, oil level must be adjusted to reach the highest
oil level plug. If reducer position is to vary from those shown in Figure 1, either
more or less oil may be required. Consult Dodge.

The running position of the reducer in a horizontal application is

not limited to the four positions shown in Fig. 1. However, if Figure 2 – Reducer and Sheave Installation
running position is over 20° in position "B" & "D" or 5° in position
"A" & "C", either way from sketches, the oil level plug cannot be
used safely to check the oil level, unless during the checking,
the torque arm is disconnected and the reducer is swung to
within 20° for position "A" & "C" or 5° for position "B" & "D" of
the positions shown in Fig. 1. Because of the many possible
positions of the reducer, it may be necessary or desirable to
make special adaptations using the lubrication filling holes
furnished along with other standard pipe fittings, stand pipes
and oil level gauges as required.
Figure 3 – Angle of V-Drive

3
 screws lightly. If the reducer must be positioned closer than
dimension “A”, place the screws with washers installed, in the
unthreaded holes in the bushing before positioning reducer
making sure to maintain at least 1/8” between the screw heads
and the bearing.

6. Place the second tapered bushing in position on the shaft

and align the bushing keyway with the shaft key. Align the
Figure 4 – Angle of Torque-Arm unthreaded holes in the bushing with the threaded holes in the
bushing backup plate. If necessary, rotate the bushing backup
plate to align with the bushing holes. Insert bushing screws, with
washers installed in the unthreaded holes in the bushing.
Tighten screws lightly.
TXT TAPERED BUSHING
7. Alternately and evenly tighten the screws in the bushing
INSTALLATION nearest the equipment to the recommended torque given in
Table 1. Repeat procedure on outer bushing.
WARNING: To ensure that drive is not unexpectedly started,
turn off and lock out or tag power source before proceeding.
Remove all external loads from drive before removing or Figure 5 – Minimum Recommended Dimensions
servicing drive or accessories. Failure to observe these
precautions could result in bodily injury. MINIMUM SHAFT LENGTH
A

Taper Bore Bushings:

1. One bushing assembly is required to mount the reducer on

the driven shaft. An assembly consists of two tapered bushings,
bushing screws and washers, and necessary shaft keys or key.

The driven shaft must extend through the full length of the
reducer. The minimum shaft length, as measured from the end
of the shaft to the outer edge of the bushing flange (see Figure
5), is given in Table 1. This dimension does not include Table 1 – Minimum Mounting Dimensions and Bolt Torques
dimension “A”. Dimension “A” should be added to the minimum Minimum Required Shaft Length
Reducer Size Taper Bushing Straight Bushing
shaft length to allow for the removal of the bushings at TXT1A 6-1/2 5-5/8
disassembly. TXT2A 6-3/4 5-13/16
TXT3B 8-9/16 7-11/16
2. Place one bushing, flange end first, onto the driven shaft and TXT4B 9-5/16 8-1/4
position per dimension “A”, as shown in Table 1. This will allow TXT5C 9-3/4 8-11/16
TXT6A 10-3/4 9-5/8
the bolts to be threaded into the bushing and for future bushing
TXT7A 11-15/16 10-3/4
and reducer removal. If the reducer must be positioned closer TXT8A 13-1/8 11-3/8
to the equipment than dimension “A”, place the screws, with TXT9A 13-0 11-3/8
washers installed, into the unthreaded holes of the bushing TXT10A 14-3/16 12-3/8
flange prior to placing the bushing on the shaft and position as
required.
Bushing Screw Information and Minimum Clearance for Removal
3. Insert the output key in the shaft and bushing. For easy of Reducer Size Fastener Size Torque in In.-Lbs. Dim. “A”
TXT1A 5/16-18 200 1-1/4
installation, rotate the driven shaft so that the shaft keyseat is at
TXT2A 5/16-18 200 1-1/4
the top position. TXT3B 3/8-16 200 1-1/2
TXT4B 3/8-16 360 1-3/4
4. Mount the reducer on the driven shaft and align the shaft key TXT5C 3/8-16 360 1-13/16
with the reducer hub keyway. Maintain the recommended TXT6A 1/2-13 360 1-13/16
minimum distance “A” from the shaft bearing. TXT7A 1/2-13 800 2-1/16
TXT8A 1/2-13 800 2-1/16
TXT9A 1/2-13 900 2-7/16
5. Insert the screws, with washers installed, in the unthreaded TXT10A 5/8-11 900 2-7/16
holes in the bushing flange and align with the threaded holes in
the bushing backup plate. If necessary, rotate the bushing
backup plate to align with the bushing screws. Tighten the

4
Straight Bore Bushings: LUBRICATION
1. One bushing assembly is required to mount the reducer on
IMPORTANT: Because Torque-Arm reducers are shipped
the driven shaft. An assembly consists of one keyed straight
without oil, it is extremely important to add the proper amount of
bushing, one plain straight bushing, required set screws, and
lubricant prior to operating reducer. For most applications a
necessary shaft key or keys.
high-grade petroleum-base rust and oxidation inhibited (R&O)
gear oil is suitable. See Table 2 and Table 3 for proper oil
The driven shaft must extent through the reducer to operate
volume and viscosity requirements.
properly. The minimum shaft length, as measured from the end
of the shaft to the outer edge of the retaining collar, is given in
Under severe conditions EP oil can be used provided the
Table 1.
reducer is not equipped with an internal backstop. Internal
backstops are designed to rely on friction to operate correctly.
2. Install the plain bushing into the reducer output hub on the
EP lubricants contain friction modifiers that will alter backstop
side toward the equipment or bearing. Remove two short set
performance and therefore must not to be used on reducers
screws from the retaining collar and install two of the longer set
equipped with internal backstops.
screws supplied with the bushing kit. Line up the bushing holes
with the set screws. Thread the set screws in until they locate
Follow instructions on reducer warning tags.
into the bushing holes. Make sure the set screws are threaded
in only enough to locate the bushing in the reducer hub and
Lubrication is very important for satisfactory operation. The
does not extend thru the bushing.
proper oil level must be maintained at all times. Frequent
inspection, at least monthly, with the unit not running and
3. Install the keyed bushing into the opposite end of the reducer
allowing sufficient time for the oil to cool and the entrapped air to
hub as the plain bushing. Remove one short set screw from
settle out of the oil should be made by removing the level plug
the retaining collar and install the remaining set screw from the
and verifying the level is being maintained. If oil level is low,
bushing kit into the collar. Line up the bushing hole with the set
add the proper lubricant until the oil volume is increased to the
screw. Thread the set screw in until it locates into the bushing
correct level.
hole. Make sure the set screw is threaded in only enough to
locate the bushing in the reducer hub and does not extend thru
After an initial operation of about two weeks, the oil should be
the bushing.
changed. If desired, this oil may be filtered and reused. After
the initial break in period, under average industrial operating
4. Mount the reducer on the driven shaft as close to the
conditions, the lubricant should be changed every 2500 hours of
equipment or bearing as practical.
operation. At every oil change, drain reducer and flush with
kerosene, clean magnetic drain plug and refill to proper level
5. Line up the keyway in the bushing with the keyway in the
with new lubricant.
driven shaft. Insert the key supplied with the bushing kit into the
keyway. Gently tap the key into position until the key is flush
Under extreme operating conditions, such as rapid rise and fall
with the edge of the reducer. Securely tighten all set screws.
of temperature, dust, dirt, chemical particles, chemical fumes, or
oil sump temperatures above 200°F, the oil should be changed
every 1 to 3 months, depending on severity of conditions.
Standard Tapered Bushings Removal:
CAUTION: Too much oil will cause overheating and too little
1. Remove bushing screws. will result in gear failure. Check oil level regularly. Failure to
observe this precaution could result in equipment damage
2. Place the screws in the threaded holes provided in the and/or bodily injury.
bushing flanges. Tighten the screws alternately and evenly until
the bushings are free on the shaft. For ease of tightening Heating is a natural characteristic of enclosed gearing. A
screws make sure screw threads and threaded holes in the maximum gear case temperature approaching 200°F is not
bushing flanges are clean. If the reducer was positioned closer uncommon for some units operating in normal ambient
than the recommended minimum distance “A” as shown in temperatures of 80°F. When operating at the rated capacity
Table 1, loosen the inboard bushing screws until they are clear with proper lubrication, no damage will result from this
of the bushing flange by 1/8”. Locate two (2) wedges at 180 temperature. This maximum temperature was taken into
degrees between the bushing flange and the bushing backup consideration during the design of the reducer.
plate. Drive the wedges alternately and evenly until the bushing
is free on the shaft.

3. Remove the outside bushing, the reducer, key(s), and

inboard bushing.

5
 Table 2 – Oil Volumes
Approximate Volume of Oil to Fill Reducer to Oil Level Plug ■ ● Ƈ
Reducer † Position A † Position B † Position C † Position D † Position E † Position F
ŸQt ƆL ŸQt ƆL ŸQt ƆL ŸQt ƆL ŸQt ƆL ŸQt ƆL
Size Ratio
TXT1A 9,15,25 1/2 1/2 1/2 1/2 5/8 5/8 3/4 3/4 1 1 1-1/4 1-1/8
TXT2A 9,15,25 7/8 7/8 1 1 5/8 5/8 1 1 1-5/8 1-1/2 1-3/4 1-5/8
TXT3B 9,15,25 1-1/2 1-3/8 1-1/2 1-3/8 3/4 3/4 2-1/4 2-1/8 2-5/8 2-1/2 3 2-7/8
TXT4B 9,15,25 1-7/8 1-3/4 2-1/4 2-1/8 1-1/4 1-1/8 1-3/4 1-5/8 3-3/8 3-1/8 4-1/4 4
TXT5C 9,15,25 3-1/4 3-1/8 4 3-3/4 3-1/4 3-1/8 4 3-3/4 7 6-5/8 8-5/8 8-1/8
TXT6A 9,15,25 4-1/4 4 5 4-3/4 4-1/4 4 5 4-3/4 8-5/8 8-1/8 9-1/8 8-5/8
TXT7A 9,15,25 6-1/2 6-1/8 8 7-1/2 7-1/4 6-7/8 9-1/4 8-3/4 15-3/8 14-1/2 16-3/8 15-1/2
TXT8A 15,25 8-1/2 8 11 10-3/8 10-1/2 9-7/8 8-1/2 8 19-1/8 18-1/8 19-1/8 18-1/8
TXT9A 15,26 13 12-1/4 13 12-1/4 12-1/2 11-7/8 14-1/4 13-1/2 25-3/8 24 25-3/8 24
TXT10A 15,24 23 21-3/4 14 13-1/4 15-3/4 14-7/8 18-3/4 17-3/4 41 38-3/4 41 38-3/4

■ Oil quantity is approximate. Service with lubricant until oil runs out of oil level hole.
† Refer to Figure 1 for mounting positions.
Ÿ US measure: 1 quart = 32 fluid ounces = .94646 liters.
Ɔ Conversion from quarts rounded values.
● Below 15 RPM output speed, oil level must be adjusted to reach the highest oil level plug. If reducer position is to vary from those shown in Figure 1, either more or
less
oil may be required. Consult Dodge.
ƈ Consult Dodge for proper oil level for reducers equipped with backstops and which are mounted in either the C position or D position.

Table 3 – Oil Recommendations

ISO Grades For Ambient Temperatures of 50F to 125F Ŷ
Output Torque-Arm Reducer Size
RPM
TXT1A TXT2A TXT3B TXT4B TXT5C TXT6A TXT7A TXT8A TXT9A TXT10A
301 – 400 320 320 220 220 220 220 220 220 220 220
201 – 300 320 320 220 220 220 220 220 220 220 220
151 – 200 320 320 220 220 220 220 220 220 220 220
126 – 150 320 320 320 220 220 220 220 220 220 220
101 – 125 320 320 320 320 220 220 220 220 220 220
81 – 100 320 320 320 320 320 220 220 220 220 220
41 – 80 320 320 320 320 320 220 220 220 220 220
11 – 40 320 320 320 320 320 320 320 320 320 320
1 – 10 320 320 320 320 320 320 320 320 320 320

ISO Grades For Ambient Temperatures of 15F to 60F Ŷ

Output Torque-Arm Reducer Size
RPM
TXT1A TXT2A TXT3B TXT4B TXT5C TXT6A TXT7A TXT8A TXT9A TXT10A
301 – 400 220 220 150 150 150 150 150 150 150 150
201 – 300 220 220 150 150 150 150 150 150 150 150
151 – 200 220 220 150 150 150 150 150 150 150 150
126 – 150 220 220 220 150 150 150 150 150 150 150
101 – 125 220 220 220 220 150 150 150 150 150 150
81 – 100 220 220 220 220 220 150 150 150 150 150
41 – 80 220 220 220 220 220 150 150 150 150 150
11 – 40 220 220 220 220 220 220 220 220 220 220
1 – 10 220 220 220 220 220 220 220 220 220 220

Ŷ Notes:
1. Assumes auxiliary cooling where recommended in the catalog.
2. Pour point of lubricant selected should be at least 10°F lower than expected minimum ambient starting temperature.
3. Extreme pressure (EP) lubricants are not necessary for average operating conditions. TORQUE-ARM internal backstops are
not suitable for use with EP lubricants.
4. Special lubricants may be required for food and drug industry applications where contact with the product being manufactured may occur. Consult a lubrication
manufacturer’s representative for his recommendations.
5. For reducers operating in ambient temperatures between -22°F (-30°C) and 20°F (–6.6°C) use a synthetic hydrocarbon lubricant, 100 ISO grade or AGMA 3 grade
(for example, Mobil SHC627). Above 125°F (51°C), consult DODGE Gear Application Engineering (864) 288-9050 for lubrication recommendation.
6. Mobil SHC630 Series oil is recommended for high ambient temperatures.

6
 OIL VISCOSITY EQUIVALENCY CHART

KINEMATIC SAYBOLT
VISCOSITIES VISCOSITIES
SAE
cSt/ cSt/ ISO AGMA GRADES SUS/ SUS/
40°C 100°C VG GRADES GEAR OILS 100°F 210°F
2000 10,000
70
8000 300
60 1500
6000
1000 50 1000 8A 5000
250
800 4000 200
40 680 8
600 3000

500 30 140
460 7
2000
400
320 6 1500
300 20
100
220 5 1000 90
200 90
800 80
150 4
600 70
100 100 3 85W
10 500
80 9 60
400
8 68 2 80W 55
60 7 300
50
50 6 46 1
200
40 75W
45
32
30 5 150

VISCOSITIES CAN BE
22
20 RELATED HORIZONTALLY 100 40
4
ONLY.
15 VISCOSITIES BASED ON 80
96 VI SINGLE GRADE
70
OILS.
10 ISO ARE SPECIFIED AT
10 60
40°C.
8 AGMA ARE SPECIFIED AT
7 50
40°C.
6 SAE 75W, 80W, AND 85W
5 5 SPECIFIED AT LOW
TEMPERATURE. EQUIVALENT
4 40
VISCOSITIES FOR 100°F
AND 200°F ARE SHOWN.
3 3 SAE 90 TO 250 SPECIFIED
AT 100°C. 35

2 2
32

7
GUIDELINES FOR TXT REDUCER Table 4 – Quantities of VCI #105 Oil
LONG-TERM STORAGE Reducer Size Quantity (Ounces / Milliliter)
TXT1A 1 / 30
TXT2A 1 / 30
During periods of long storage, or when waiting for delivery or TXT3B 1 / 30
installation of other equipment, special care should be taken to TXT4B 1 / 30
protect a gear reducer to have it ready to be in the best TXT5C 1 / 30
condition when placed into service. TXT6A 2 / 59
TXT7A 2 / 59
TXT8A 3 / 89
By taking special precautions, problems such as seal leakage
TXT9A 4 / 118
and reducer failure due to lack of lubrication, improper TXT10A 6 / 177
lubrication quantity, or contamination can be avoided. The VCI #105 and #10 are interchangeable.
following precautions will protect gear reducers during periods of VCI #105 is more readily available.
extended storage:

Preparation:

1. Drain oil from the unit. Add a vapor phase corrosion

inhibiting oil (VCI-105 oil by Daubert Chemical Co.) in
accordance with Table 4.

2. Seal the unit airtight. Replace the vent plug with a standard
pipe plug and wire the vent to the unit.

3. Cover all unpainted exterior parts with a waxy rust

preventative compound that will keep oxygen away from the
bare metal. (Non-Rust X-110 by Daubert Chemical Co. or
equivalent)

4. The instruction manuals and lubrication tags are paper and

must be kept dry. Either remove these documents and store
them inside, or cover the unit with a durable waterproof cover
which can keep moisture away.

5. Protect reducer from dust, moisture, and other contaminants

by storing the unit in a dry area.

6. In damp environments, the reducer should be packed inside

a moisture-proof container or an envelope of polyethylene
containing a desiccant material. If the reducer is to be stored
outdoors, cover the entire exterior with a rust preventative.

When placing the reducer into service:

1. Fill the unit to the proper oil level using a recommended

lubricant. The VCI oil will not affect the new lubricant.

2. Clean the shaft extensions with petroleum solvents.

3. Assemble the vent plug into the proper hole.

Follow the installation instructions provided in this manual.

8
MOTOR MOUNTS Mount motor, drive and driven sheaves, and v-belts. Note:
Mount driven sheave as close to the reducer housing as
Figure 6 – Motor Mount Components
practical.

Adjust v-belts to the proper tension by adjusting the jam nuts

and securely tighten.

Check all bolts to insure that they are securely tightened.

TA8 thru TA10 Motor Mount:

Remove the required housing bolts on the output end of the

reducer. Place the motor mount brackets in position and install
the longer housing bolts supplied with the motor mount
assembly. Do not fully tighten the housing bolts at this time.

Install the four adjusting studs to the top plate as shown using
the jam nuts provided and securely tighten. Add one additional
jam nut to each stud and thread approximately to the middle of
the stud. Install this assembly to the motor mount brackets and
install the remaining jam nuts onto the studs to secure the top
plate to the brackets. Tighten the housing bolts to the torque
values listed in Table 6.

Loosely install the front motor rail to the top plate. Measure the
distance between the front and rear mounting holes on the
Motor Mount Installation: motor and position the rear motor rail at this distance and
loosely bolt to the top plate.
The TA motor mount is designed to be installed on the output
end of the reducer as shown in Figure 6. If bottom mounting is Center the motor on the motor rails and securely bolt the motor
desired, use the optional TAB style. to the motor rails.

Install the motor sheave and reducer sheave on their shafts.

TA1M thru TA7M Motor Mount: Mount the reducer sheave as close to the housings as practical.
Install the v-belts and adjust the motor rails to permit proper
Remove the required housing bolts on the output end of the alignment of the v-belts to the sheaves. Securely tighten the
reducer. Place the motor mount brackets in position and install motor rails to the mounting plate.
the longer housing bolts supplied with the motor mount
assembly. Do not fully tighten the housing bolts at this time. Adjust the v-belts to the proper tension and securely tighten the
adjusting nuts.
Install the bottom plate to the motor mount brackets and tighten
with the hardware provided. Next, tighten the housing bolts to Check all bolts to see that they are securely tightened.
the torque values listed in Table 6.
WARNING: To ensure that drive is not unexpectedly started,
Install the four adjusting studs to the bottom plate using the jam
turn off and lock out or tag power source before proceeding.
nuts provided and securely tighten. These nuts will not require
Remove all external loads from drive before removing or
any further adjustment. Add one additional jam nut to each
servicing drive or accessories. Failure to observe these
stud and thread approximately to the middle of the stud. Install
precautions could result in bodily injury.
the top motor plate on top of the jam nuts. Assemble the
remaining jam nuts on studs to secure top motor plate. Do not
fully tighten these nuts yet.

9
REPLACEMENT OF PARTS Taper Bushed Reducer:

1. Disconnect and remove belt guard, v-drive, and motor mount

IMPORTANT: Using tools normally found in a maintenance
as required. Disconnect torque arm rod from reducer adapter.
department, a Dodge Torque-Arm speed reducer can be
disassembled and reassembled by careful attention to the
2. Remove bushing screws.
instructions following.
3. Place the screws in the threaded holes provided in the
Cleanliness is very important to prevent the introduction of dirt
bushing flanges. Tighten the screws alternately and evenly until
into the bearings and other parts of the reducer. A tank of clean
the bushings are free on the shaft. For ease of tightening
solvent, an arbor press, and equipment for heating bearings and
screws, make sure screw threads and threaded holes in bushing
gears (for shrinking these parts on shafts) should be available.
flanges are clean. A tap can be used to clean out the threads.
Use caution to use the proper size tap to prevent damage to the
Our factory is prepared to repair reducers for customers who do
threads.
not have proper facilities or who, for any reason, desire factory
service.
4. Remove the outside bushing, the reducer, and then the
inboard bushing.
The oil seals are designed with a contact lip. Considerable care
should be used during disassembly and reassembly to avoid
damage to the surface on which the seals rub.
Straight Bore Reducer:
The keyseat in the input shaft, as well as any sharp edges on
1. Disconnect and remove belt guard, v-drive, and motor mount
the output hub should be covered with tape or paper before
as required. Disconnect torque arm rod from reducer adapter.
disassembly or reassembly. Also, be careful to remove any
burrs or nicks on surfaces of the input shaft or output hub before
2. Loosen and remove the set screws in both output hub
disassembly or reassembly.
collars.
Ordering Parts: When ordering parts for a Dodge Torque Arm
3. Remove the collar from the output hub closest to the end of
reducer, specify reducer part number, part name, and quantity
the shaft. This will expose three puller holes in the output hub to
required.
permit the use of a three prong puller. In removing the reducer
from the shaft, use care not to damage the reducer output hub.
It is strongly recommended that, when a pinion or gear is
replaced, the mating pinion or gear is replaced also.
Disassembly:
If the large gear on the output hub must be replaced, it is
recommended that an output hub assembly consisting of a gear
1. Drain all oil from the reducer.
assembled on a hub be ordered to ensure undamaged surfaces
on the output hub where the output seals rub. However, if it is
2. Remove all locking collars, retaining rings, and bushing
desired to use the old output hub, press the gear and bearing off
backup plated as required. Position the reducer on its side and
and examine the rubbing surface under the oil seal carefully for
remove all housing bolts. Using the three pry slots around the
possible scratching or other damage resulting from the pressing
periphery of the flange, gently separate the housing halves and
operation. To prevent oil leakage at the shaft oil seals, the
open evenly to prevent damage to the parts inside. Remove the
smooth surface of the output hub must not be damaged.
two dowel pins.
If any parts must be pressed from a shaft or from the output
3. Lift input shaft, all gear assemblies, and bearing assemblies
hub, this should be done before ordering parts to make sure that
from housing.
none of the bearings or other parts are damaged in removal. Do
not press against rollers or cage of any bearing.
4. Remove seals from housing.
Because old shaft oil seals may be damaged in disassembly, it
5. Remove bearings from shafts and hubs. Be careful not to
is advisable to order replacements for these parts.
scratch or damage any assembly or seal area during bearing
removal. The hub assembly can be disassembled for gear
Removing Reducer from Shaft:
replacement but if scratching or grooving occurs on the hub,
seal leakage will occur and the hub will need to be replaced.
WARNING: To ensure that drive is not unexpectedly started,
turn off and lock out or tag power source before proceeding.
Remove all external loads from drive before removing or
servicing drive or accessories. Failure to observe these
precautions could result in bodily injury.

10
TXT Reassembly: 12. Install input and output seals. Lightly coat the seal lips with
Mobilith AW2 All-Purpose grease or equivalent. The possibility
1. Output Hub Assembly: Heat gear to 325°F to 350°F to of damage and consequent oil leakage can be decreased by
shrink onto hub. Heat bearings to 270°F to 290°F to shrink onto covering all sharp edges with tape prior to seal installation.
hub. Any damage to the hub surfaces where the oil seals rub Seals should be pressed or tapped with a soft hammer evenly
will cause leakage, making it necessary to replace the hub. into place in the reducer housing, applying pressure only on the
outer edge of the seals.
2. Countershaft Assembly: Heat gear to 325°F to 350°F and
bearings to 270°F to 290°F to shrink onto shaft. Extreme care should be used when installing seals to avoid
damage due to contact with sharp edges on the input shaft or
3. Input Shaft Assembly: Heat bearings 270°F to 290°F to output hub. A slight oil leak at the seals may be evident during
shrink onto shaft. Press bearings on shaft. initial running, but should disappear unless seals have been
damaged.
4. Drive the two dowel pins into place in the right-hand housing
half (backstop side). 13. Install bushing backup plates and snap rings on Taper
Bushed reducers or hub collars on straight bore reducers and
5. Place R.H. housing half on blocks to allow for protruding end install backstop cover. Make sure all bolts are tightened to the
of output hub. correct torque values listed in Table 6.

6. Install all bearing cups on TXT3B thru TXT10A in right-hand

housing half, making sure they are properly seated. TXT1A and Table 5 – Bearing Adjustment Tolerances
TXT2A reducers use ball bearings on all shafts and do not Reducer Size
Bearing Endplay Values
incorporate bearing cups. Input Countershaft Output
TXT1A N/A N/A N/A
TXT2A N/A N/A N/A
7. Mesh output hub gear and small countershaft gear together TXT3B .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
and set in place in housing. Set input shaft assembly in place in TXT4B .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
the housing. Make sure bearing rollers (cones) are properly TXT5C .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
seated in their cups. TXT6A .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
TXT7A .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
TXT8A .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
8. Make sure both housing halves are clean. Apply a continuous TXT9A .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
1/8” diameter bead of Dow Corning RTV732 sealant on the TXT10A .002-.004 Loose .0005-.003 Loose .0005-.003 Loose
flange surface of the R.H. housing (make sure RTV is placed
around all bolt holes). Set the left-hand housing half into Table 6 – Recommended Bolt Torque Values
position onto the dowel pins and gently tap with a soft hammer Recommended Torque Values (lbs.-ft.)
(rawhide, not lead hammer) until housing bolts can be used to Reducer Housing Output Seal C/S Bearing Input Seal
draw housing halves together. Make sure reducer shafts do not Size Bolts Carrier Cover Carrier
TXT1A 30 - 27 N/A N/A N/A
bind while tightening housing bolts. Torque housing bolts per TXT2A 30 - 27 N/A N/A N/A
torque values listed in Table 6. TXT3B 50 - 45 17 – 15 17 – 15 17 – 15
TXT4B 50 - 45 30 – 27 30 – 27 30 – 27
9. On TXT1A and TXT2A reducers, skip to step number 12. TXT5C 75 - 68 30 - 27 30 - 27 30 - 27
TXT6A 75 - 68 30 - 27 30 - 27 30 - 27
TXT7A 150 - 135 50 - 45 50 - 45 50 - 45
10. Place the output bearing cup into the housing and tap into TXT8A 150 - 135 30 – 27 30 – 27 30 – 27
place. Install the output seal carrier and draw down with two TXT9A 150 - 135 30 – 27 30 – 27 30 – 27
bolts 180° apart to 50 inch pounds of torque. Loosen both bolts TXT10A 150 - 135 30 - 27 30 - 27 30 - 27
then retighten finger tight only. Measure the clearance between
the housing and carrier flange at each bolt and average the two Backstop Cover Bolt Recommended Torque Values
values. Add 0.010” to the average reading and make up shim Reducer Size Fastener Size Torque in Ft.-Lbs.
pack. Install shim pack between the carrier flange and the TXT1A 10 - 24 x 3/8 5–4
TXT2A 10 - 24 x 3/8 5– 4
reducer housing. Torque the bolts to the value shown in Table TXT3B 10 - 24 x 3/8 5–4
6. Using a magnetic base and dial indicator, check the axial end TXT4B ¼ - 20 x ½ 8–7
play. Add or remove shims until the axial endplay reading of the TXT5C ¼ - 20 x ½ 8–7
output hub is per Table 5. TXT6A ¼ - 20 x ½ 8–7
TXT7A ¼ - 20 x ½ 8–7
TXT8A ¼ - 20 x ½ 8–7
11. Repeat step 9 above for installing and adjusting the TXT9A ¼ - 20 x ½ 8–7
countershaft and input bearings. Adjust the axial endplay per TXT10A ¼ - 20 x ½ 8–7
Table 5.

11
REPLACEMENT PART AND KIT
NUMBERS
Table 7–Dodge and Timken Part Numbers for Replacement
Bearings, Double Reduction Reducers Reducer Size Input Shaft Bearing – LH Input Side
Reducer Output Hub Bearing – LH and RH Sides Dodge Part Number Timken Part Number
Size Dodge Part Number Timken Part Number TXT1A 424112 6205NR (SKF)
TXT1A 424020 6011NR (SKF) TXT2A 424019 206NR (SKF)
TXT2A 424022 6013NR (SKF) TXT3B 402204/403139 LM48548A/LM48510
TXT3B 402272/403127 LM814849/LM814810 TXT4B 402280/403027 2788/2720
TXT4B 402268/403163 498/492A TXT5C 402144/403104 28579/28521
TXT5C 402193/403016 42381/42584 TXT6A 402196/403091 395A/3920
TXT6A 402050/403140 JM822049/JM822010 TXT7A 402150/403106 39590/39520
TXT7A 402058/403111 48290/48220 TXT8A 402098/403072 566/563
TXT8A 402147/403105 36690/36620 TXT9A 402114/403080 745A/742
TXT9A 402160/403110 46790/46720 TXT10A 402114/403080 745A/742
TXT10A 402168/403116 67790/67720
Reducer Size Input Shaft Bearing – RH Backstop Side
Reducer Countershaft Bearing – LH Input Side Dodge Part Number Timken Part Number
Size Dodge Part Number Timken Part Number TXT1A 424111 6204NR (SKF)
TXT1A 424006 6304NR (SKF) TXT2A 424090 6305NR (SKF)
TXT2A 424000 305NR (SKF) TXT3B 402273/403094 15102/15245
TXT3B 402273/403094 15102/15245 TXT4B 402142/403102 26118/26283
TXT4B 402000/403000 M86649/M86610 TXT5C 402266/403073 350A/352
TXT5C 402203/403027 2789/2720 TXT6A 402197/403091 396/3920
TXT6A 402054/403159 HM807040/HM807010 TXT7A 402088/403047 455/452
TXT7A 402256/403053 JHM807045/JHM807012 TXT8A 402097/403072 565/563
TXT8A 402057/403143 JH211749/JH211710 TXT9A 402107/403076 639/633
TXT9A 402109/403078 655/652A TXT10A 402112/403080 745S/742
TXT10A 402232/402231 JH415647/JH415610
Note: Bearing part numbers refer to Timken Roller Bearing Cup/Cone
combinations, respectively, and apply to all ratios unless otherwise specified.
Reducer Countershaft Bearing – RH Backstop Side
For actual reducer ratios, refer to Table 9.
Size Dodge Part Number Timken Part Number
TXT1A 424006 6304NR (SKF)
TXT2A 424000 305NR (SKF)
TXT3B 402273/403094 15102/15245
TXT4B 402000/403000 M86649/M86610
TXT5C 402203/403027 2789/2720
TXT6A 402052/403142 HM803149/HM803110
TXT7A 402256/403053 JHM807045/JHM807012
TXT8A 402148/403106 39585/39520
TXT9A 402109/403078 655/652A
TXT10A 402232/402231 JH415647/JH415610

12
 Table 8 – Replacement Parts Kit Numbers
Output Hub Assembly
Reducer Size Ratio Seal Kit Countershaft Assembly Bearing Kit(s)
Taper Hub Straight Hub
9:1 392100
TXT1A 15:1 392119 390878 390151 392090 389905 All
25:1 392091
9:01 392101
TXT2A 15:1 392120 392111 392110 392092 389906 All
25:1 392093
9:1 389729 389587 Input
TXT3B 15:1 389720 389703 389702 389700 389588 C/S
25:1 389701 389589 Output
9:1 389730 389590 Input
TXT4B 15:1 389721 389710 389709 389707 389591 C/S
25:1 389708 389592 Output
9:1 389731 389593 Input
TXT5C 15:1 389722 389717 389716 389714 389595 C/S
25:1 389715 389596 Output
9:1 392140
TXT6A 15:1 246340 390935 390988 391171 N/A
25:1 391186
9:1 392141
TXT7A 15:1 247345 390941 390990 391196 N/A
25:1 391197
15:1 391184
TXT8A 248340 390944 390993 N/A
25:1 391185
15:1 390124
TXT9A 249340 390949 390159 N/A
26:1 390139
15:1 390983
TXT10A 272460 390954 390160 N/A
24:1 390998

Notes:
Seal Kit consists of Input Seal, Output Seals, Backstop Cover Gasket and RTV Sealant.
Output Hub Assembly consists of Output Hub, Output Gear and Gear Key.
Countershaft Assembly consists of Countershaft Pinion, Countershaft Gear and Gear Key.
Bearing Kit consists of LH and RH Output Bearing Cup/Cone, LH and RH Countershaft Bearing Cup/Cone (double reduction only) and LH and RH Input Bearing Cup/Cone.

13
Parts for TXT/HXT 1A & 2A Straight and Tapered Bushed Double Reduction Reducers

14
 Parts for TXT/HXT 1A & 2A Straight and Tapered Bushed Double Reduction Reducers

Ref. Description Qty. TXT/HXT 1 TXT/HXT 2

12 Backstop Assembly 1 242101 252101
1 Housing-LH 1 241358 242353
2 Housing-RH 1 241359 242354
Housing-RH, Flange Mount Drilled 1 241387 242393
3 Housing-Hydroil LH 1 241064 242067
§ RTV Sealant, Tube 1 465044 465044
§ Air Vent 1 900287 900287
16 Housing Bolt † 411418 411418
18 Housing Bolt-Adapter 2 411420 411420
20 Lock-Washer ‡ 419011 419011
22 Hex Nut ‡ 407087 407087
§ Dowel Pin 2 420145 420145
§ Magnetic Oil Plug 1 430060 430060
25 Oil Plug 4 430031 430031
34 Backstop Shaft Cover 1 242221 243221
38 Backstop Cover Screw 4 415022 415022

Seal Kit Ƈ 1 392119 392120

36 Backstop Cover Gasket Ÿ 1 242220 243220
42 Input Oil Seal Ÿ 1 241457 242211
78 Output Hub Oil Seal Ÿ 2 241210 242210

40 Input Pinion
9:1 Ratio ♠ 1 241481 242481
15:1 Ratio ♠ 1 241302 242186
25:1 Ratio ♠ 1 241200 242187
130 Hydroil Input Pinion
15:1 Ratio ♠ 1 241455 242188
25:1 Ratio ♠ 1 241449 242189

41 Input Pinion Key 1 443008 443014

Bearing Replacement Kit Ƈ 1 389905 389906

44 Input Pinion Bearing-LH, Input SideŸ 1 424112 424019
46 Input Pinion Bearing-RH, Backstop SideŸ 1 424111 424090
54 Countershaft Pinion Bearing Ÿ 2 424006 424000
80 Output Hub Bearings Ÿ 2 424020 424022

Countershaft Pinion Assembly Ƈ

9:1 Ratio ♠ 1 392100 392101
15:1 Ratio ♠ 1 392090 392092
25:1 Ratio ♠ 1 392091 392093
48 Countershaft Pinion Ÿ 1 241216 242185
50 First Reduction Gear Ÿ
9:1 Ratio ♠ 1 241482 242482
15:1 Ratio ♠ 1 241170 242008
25:1 Ratio ♠ 1 241171 242005
52 Countershaft to First Gear Key Ÿ 1 241309 242218

Taper Bore Output Hub Assembly Ƈ 1 390878 392111

Straight Bore Output Hub Assembly ƅ 1 390151 392110
60 Output Hub
Straight Bore Ŷ 1 241208 242208
Taper Bore Ÿ 1 241265 242134
62 Output Gear ŸŶ 1 241007 242181
64 Output Gear Key ŸŶ 1 241217 443399
59 Output Hub Snap Ring Ÿ 2 421013 421017
61 Straight Bore Output Hub Key Ŷ 1 241296 242296

68 Straight Bore Output Hub Collar 2 241209 242209

70 Straight Bore Output Hub Collar Screw 4 400062 400094
72 Taper Bore Bushing Backup Plate 2 241266 242137
74 Bushing Backup Plate Retaining Ring 2 421111 421112

84 Taper Bore Bushing Assembly Ƈ

Bushing Ÿ
1” Bore 1 241278 N/A
1-1/16” Bore 1 241280 N/A
1-1/8” Bore 1 241282 242146

15
 Parts for TXT/HXT 1A & 2A Straight and Tapered Bushed Double Reduction Reducers

Ref. Description Qty. TXT/HXT 1 TXT/HXT 2

84 Taper Bore Bushing Assembly Cont. Ƈ
1-3/16” Bore 1 241286 242148
1-1/4” Bore 1 241288 242150
1-5/16” Bore 1 241290 242152
1-3/8” Bore 1 241294 242154
1-7/16” Bore 1 241292 242156
1-11/16” Bore 1 N/A 242164
1-1/2” Bore 1 N/A 242158
1-5/8” Bore 1 N/A 242162
1-3/4” Bore 1 N/A 242166
1-15/16” Bore 1 N/A 242168
86 Bushing Screw Ÿ 6 411405 411390
88 Lock Washer Ÿ 6 419010 419010
90 Key, Taper Bore Bushing to Shaft Ÿ
1” Bore 1 443274 N/A
1-1/8” Bore 1 443271 443281
1-3/16” Bore 1 241308 443281
1-1/4” Bore 1 241307 443281
1-5/16” Bore 1 241306 443264
1-3/8” Bore 1 241310 443280
1-7/16” Bore 1 241305 443282
1-1/2” Bore 1 N/A 443282
1-5/8” Bore 1 N/A 424172
1-11/16” Bore 1 N/A 242171
1-3/4” Bore 1 N/A 242170
1-15/16” Bore 1 N/A 443283
§ Key, Bushing to Output Hub Ÿ
1” Bore 1 443272 N/A
1-1/8” Bore 1 443273 N/A
1-1/8” to 1-1/2” Bore 1 N/A 443284

Torque-Arm Assembly Ƈ 1 241097 243097

94 Torque-Arm Rod End Ÿ 1 241245 243245
96 RH Nut Ÿ 1 407093 407095
98 Torque-Arm Turnbuckle Ÿ 1 241246 243246
100 Torque-Arm Extension Ÿ 1 241247 243247
102 LH Nut Ÿ 1 407242 407244
104 Torque-Arm Fulcrum Ÿ 1 241249 243249
106 Fulcrum Screw Ÿ 1 411456 411484
110 Hex Nut Ÿ 1 407091 407093

Adapter Assembly Ƈ 1 259151 259152

112 RH Torque-Arm Adapter Bracket Ÿ 1 241242 242136
114 LH Torque-Arm Adapter Bracket Ÿ 1 241241 242135
116 Adapter Bushing Ÿ 1 242243 243243
118 Adapter Bolt Ÿ 1 411412 411437
120 Lock Washer Ÿ 1 419011 419012
122 Hex Nut Ÿ 1 407087 407089

124 Hydraulic Motor Adapter 1 241454 242454

126 Adapter Screw 6 417081 417081
128 Lockwasher 6 419046 419046
111 Input Pinion Seal, Hydroil 1 241457 242457
§ Motor to Adapter Screw 2 411408 411408
§ Motor to Adapter Lock Washer 2 419011 419011
Notes:
§ Not shown on Drawing.
Ƈ Includes Parts Listed Immediately Below Marked Ÿ
ƅ Includes Parts Listed Immediately Below Marked Ŷ
▲ Makes up Assembly Under Which it is Listed.
Ŷ Makes up Assembly Under Which it is Listed.
♠ See Table 9 for Actual Ratio.
† 4 Required on TXT1A and 5 Required on TXT2A
‡ 6 Required on TXT1A and 7 Required on TXT2A

16
Parts for TXT3B thru TXT5C Straight and Tapered Bushed Double Reduction Reducer

17
 Parts for TXT3B thru TXT5C Straight and Tapered Bushed Double Reduction Reducer

TXT3B TXT4B TXT5C

Ref. Description Qty.
HXT3B HXT4B HXT5C
12 Backstop Assembly 1 243106 244106 245154
1 Housing-TXT and Hydroil LH 1 243228 244365 245369
2 Housing-RH 1 243229 244366 245370
Housing-RH, Flange Mount Drilled 1 243384 244387 245373
§ RTV Sealant, Tube 1 465044 465044 465044
§ Air Vent 1 900287 900287 904287
16 Housing Bolt 6 411440 411442 411464
18 Housing Bolt-Adapter 2 411442 411444 411466
20 Lock-Washer 8 419012 419012 419013
22 Hex Nut 8 407089 407089 407091
§ Dowel Pin 2 420146 420146 420147
§ Magnetic Oil Plug 1 430060 430060 430062
25 Oil Plug 4 430031 430031 430033
28 Input Shaft Seal Carrier 1 243543 244577 245597
30 Input Shaft Bearing Shim Pack ‡ 389704 389711 389732
32 Input Seal Carrier Screw † 411390 411407 411407
33 Lock Washer † 419010 419011 419011
34 Backstop Cover 1 243560 244493 245226
38 Backstop Cover Screw 4 416524 411035 411394
39 Backstop Cover Lock Washer 4 N/A N/A 419009

Seal Kit Ƈ 1 389720 389721 389722

36 Backstop Cover Gasket Ÿ 1 243561 244593 245220
42 Input Pinion Shaft Seal Ÿ 1 243558 244524 355011
78 Output Hub Oil Seal Ÿ 2 243578 244673 245545

40 Input Pinion
9:1 Ratio ♠ 1 243549 244579 245599
15:1 Ratio ♠ 1 243550 244580 245600
25:1 Ratio ♠ 1 243551 244581 245601
130 15:1 Ratio Hydroil Pinion ♠ 1 243553 244583 245603
25:1 Ratio Hydroil Pinion ♠ 1 243554 244584 245604
15:1 Ratio Hydroil 6-B Pinion ♠ 1 N/A 244586 N/A
25:1 Ratio Hydroil 6-B Pinion ♠ 1 243498 244587 245641

41 Input Pinion Shaft Key 1 443032 443082 443096

Input Bearing Kit Ƈ 1 389587 389590 389594

44 Input Shaft Bearing Cone, Input Side Ÿ 1 402204 402280 402144
45 Input Shaft Bearing Cup, Input Side Ÿ 1 403139 403027 403104
46 Input Shaft Bearing Cone, Backstop Side Ÿ 1 402273 402142 402266
47 Input Shaft Bearing Cup, Backstop Side Ÿ 1 403094 403102 403073

Countershaft Pinion Assembly Ƈ

9:1 Ratio ♠ 1 389729 389730 389731
15:1 Ratio ♠ 1 389700 389707 389714
25:1 Ratio ♠ 1 389701 389708 389715
48 Countershaft Pinion Ÿ 1 243555 244590 245596
50 First Reduction Gear Ÿ
9:1 Ratio ♠ 1 243237 244482 245482
15:1 Ratio ♠ 1 243238 244214 245214
25:1 Ratio ♠ 1 243239 244212 245212
52 First Stage Gear Key Ÿ 1 243215 244215 244215

Countershaft Bearing Kit Ƈ 1 389588 389591 389595

54 Countershaft Bearing Cone, Input Side Ÿ 1 402273 402000 402203
55 Countershaft Bearing Cup, Input Side Ÿ 1 403094 403000 403027
56 Countershaft Bearing Cone, Backstop Side Ÿ 1 402273 402000 402203
57 Countershaft Bearing Cup, Backstop Side Ÿ 1 403094 403000 403027
58 Countershaft Bearing Cover, Input Side Ÿ 1 243545 244578 245594
59 Countershaft Bearing Shim Pack ‡ 389705 389712 389718

Taper Bore Output Hub Assembly Ƈ 1 389703 389710 389717

Straight Bore Output Hub Assembly ƅ 1 389702 389709 389716
60 Output Hub
Straight Bore Ŷ 1 243557 244589 245591
Taper Bore Ÿ 1 243556 244588 245590
62 Output Gear ŸŶ 1 243570 244188 245186

18
 Parts for TXT3B thru TXT5C Straight and Tapered Bushed Double Reduction Reducer
TXT3B TXT4B TXT5C
Ref. Description Qty.
HXT3B HXT4B HXT5C
64 Output Gear Key ŸŶ 1 243216 354087 355064

68 Output Hub Collar, Straight Bore 2 243572 244658 245598

70 Output Hub Collar Screw 4 400098 400150 400154
72 Bushing Backup Plate, Taper Bore 2 243308 244099 245114
74 Bushing Backup Plate Retaining Ring 2 421109 421108 421107

76 Output Hub Seal Carrier, Input Side 1 243547 244591 245592

Output Hub Bearing Kit Ƈ 1 389589 389592 389596

80 Output Hub Bearing, Cone Ÿ 2 402272 402268 402193
81 Output Hub Bearing, Cup Ÿ 2 403127 403163 403016
82 Output Hub Bearing Shim Kit ‡ 389706 389713 389719

84 Taper Bore Bushing Assembly Ƈ

Bushing Ÿ
1-5/16” Bore 1 243282 N/A N/A
1-3/8” Bore 1 243284 N/A N/A
1-7/16” Bore 1 243260 244079 N/A
1-1/2” Bore 1 243262 244081 N/A
1-5/8” Bore 1 243264 244083 N/A
1-11/16” Bore 1 243268 244085 N/A
1-3/4” Bore 1 243266 244087 N/A
1-7/8” Bore 1 243270 244089 245084
1-15/16” Bore 1 243272 244093 245086
2” Bore 1 243274 244095 245088
2-1/8” Bore 1 N/A 244109 N/A
2-3/16” Bore 1 243276 244111 245090
2-1/4” Bore 1 N/A 244113 245092
2-7/16” Bore 1 N/A 244115 245094
2-1/2” Bore 1 N/A N/A 245099
2-11/16” Bore 1 N/A N/A 245110
2-15/16” Bore 1 N/A N/A 245112
86 Taper Bushing Screw Ÿ 6 411407 411408 411435
88 Taper Bushing Lockwasher Ÿ 6 419011 419011 419012

90 Key, Bushing to Shaft Ÿ

1-5/16” Bore 1 443264 N/A N/A
1-3/8” Bore 1 443264 N/A N/A
1-7/16” Bore 1 443265 443254 N/A
1-1/2” Bore 1 443265 443254 N/A
1-5/8” Bore 1 443265 443254 N/A
1-11/16” Bore 1 443266 443254 N/A
1-3/4” Bore 1 443266 443254 N/A
1-7/8” Bore 1 443267 443255 443251
1-15/16” Bore 1 443269 443255 443251
2” Bore 1 443268 443255 443251
2-1/8” Bore 1 N/A 443258 N/A
2-3/16” Bore 1 443270 443259 443251
2-1/4” Bore 1 N/A 443260 443251
2-7/16” Bore 1 N/A 443261 443243
2-1/2” Bore 1 N/A N/A 443244
2-11/16” Bore 1 N/A N/A 443245
2-15/16” Bore 1 N/A N/A 443250

§ Key, Bushing to Output Hub Ÿ

1-3/4” thru 1-15/16” Bore Bushing 1 443262 N/A N/A
1-7/16” thru 2-1/4” Bore Bushing 1 N/A N/A 443202
2-3/16” thru 2-15/16” Bore Bushing 1 N/A 443257 N/A

Torque-Arm Rod Kit Ƈ 1 243097 245097 245097

94 Torque-Arm Rod End ▲ 1 243245 245245 245245
96 RH Nut ▲ 1 407095 407097 407097
98 Torque-Arm Turnbuckle ▲ 1 243246 245246 245246
100 Torque-Arm Extension ▲ 1 243247 245247 245247
102 LH Nut ▲ 1 407244 407246 407246
104 Fulcrum ▲ 1 243249 246249 246249
106 Fulcrum Screw ▲ 1 411484 411484 411484
110 Hex Nut ▲ 1 407093 407093 407093

19
 Parts for TXT3B thru TXT5C Straight and Tapered Bushed Double Reduction Reducer

TXT3B TXT4B TXT5C

Ref. Description Qty.
HXT3B HXT4B HXT5C
Adapter Assembly Ƈ 1 259153 259154 259155
112 RH Adapter Plate ▲ 1 243242 244244 245242
114 LH Adapter Plate ▲ 1 243241 244243 245241
116 Adapter Bushing ▲ 1 243243 245243 245243
118 Adapter Bolt ▲ 1 411437 411460 411460
120 Lockwasher ▲ 1 419012 419013 419013
122 Hex Nut ▲ 1 407089 407091 407091

Hydroil Motor Adapter

124 15:1 Ratio Motor Adapter 1 243539 244572 245606
25:1 Ratio Motor Adapter 1 243541 244572 245607
Hydroil 6-B Motor Adapter, 15:1 and 25:1 Ratio 1 243467 244573 245643
126 Adapter Screw † 417081 417108 415023
128 Lockwasher † 419046 419047 419047
§ Motor to Adapter Screw
§ Motor to Adapter Lock Washer
Notes:
§ Not shown on drawing.
Ƈ Includes parts listed immediately below marked Ÿ
ƅ Includes parts listed immediately below marked Ŷ
▲ Makes up assembly under which it is listed.
Ŷ Makes up assembly under which it is listed.
♠ See Table 9 for actual ratio.
† 4 required on TXT3B and TXT4B, 5 required on TXT5C
‡ Two sets recommended.

20
Parts for TXT6A thru TXT10A Straight and Tapered Bushed Double Reduction Reducers

21
 Parts for TXT6A thru TXT10A Straight and Tapered Bushed Double Reduction Reducers

Ref. Description Qty. TXT6A TXT7A TXT8A TXT9A TXT10A

12 Backstop Assembly 1 246092 247260 249260 249260 250260
1 Housing-TXT and Hydroil LH 1 246358 247358 248358 249358 250358
2 Housing-RH 1 246359 247359 248359 249359 250359
Housing-RH, Flange Mount Drilled 1
§ RTV Sealant, Tube 1 465044 465044 465044 465044 465044
§ Air Vent 1 904287 904287 904287 904287 904287
16 Housing Bolt 411466 411498 411499 411500 411502
18 Housing Bolt-Adapter 2 411468 411499 411502 411502 411506
20 Lock-Washer 419013 419016 419016 419016 419016
22 Hex Nut 407091 407095 407095 407095 407095
§ Dowel Pin 2 420147 420148 420148 420148 420148
25 Magnetic Oil Plug 1 430062 430064 430064 430064 430064
§ Oil Plug 4 430033 430035 430035 430035 430035
28 Input Shaft Seal Carrier 1 246184 247320 258023 249211 249211
30 Input Shaft Bearing Shim Pack ‡ 391164 390420 390038 390168 390168
32 Carrier and Cover Screw ¨ 411408 411433 411408 411408 411408
33 Lock Washer ¨ 419011 419012 419011 419011 419011
34 Backstop Cover 1 246226 246226 248226 248226 248226
35 Backstop Retaining Ring † 421029 421029 421034 421034 421034
38 Backstop Cover Screw 6 411394 411394 411394 411394 411394
39 Backstop Cover Lock Washer 6 419009 419009 419009 419009 419009

Seal Kit Ƈ 1 246340 247345 248340 249340 272460

36 Backstop Cover Gasket Ÿ 1 246220 246220 248220 248220 248220
42 Input Pinion Shaft Seal Ÿ 1 242210 242210 248211 248211 248211
78 Output Hub Oil Seal Ÿ 2 246310 247310 258019 249210 250010

40 Input Pinion
9:1 Ratio ♠ 1 246481 247479 N/A N/A N/A
15:1 Ratio ♠ 1 246290 247370 248370 272074 250300
25:1 Ratio ♠ Ƒ 1 246291 247371 248371 272106 250004
130 15:1 Ratio Hydroil Pinion ♠ 1 246230 247463 N/A N/A N/A
25:1 Ratio Hydroil Pinion ♠ 1 246286 247462 N/A N/A N/A
15:1 Ratio 6B Hydroil Pinion ♠ 1 N/A N/A N/A N/A N/A
25:1 Ratio 6B Hydroil Pinion ♠ 1 246521 247521 N/A N/A N/A

41 Input Pinion Shaft Key 1 443113 443127 443133 443123 443123

Input Bearings
44 Input Shaft Bearing Cone, Input Side 1 402196 402150 402098 402114 402114
45 Input Shaft Bearing Cup, Input Side 1 403091 403106 403072 403080 403080
46 Input Shaft Bearing Cone, Backstop Side 1 402197 402088 402097 402107 402112
47 Input Shaft Bearing Cup, Backstop Side 1 403091 403047 403072 403076 403080

Countershaft Pinion Assembly Ƈ

9:1 Ratio ♠ 1 392140 392141 N/A N/A N/A
15:1 Ratio ♠ 1 391171 391196 391184 390124 390983
25:1 Ratio ♠ Ƒ 1 391186 391197 391185 390139 390998
48 Countershaft Pinion Ÿ 1 246294 247002 248002 249006 272249
50 First Reduction Gear Ÿ
9:1 Ratio ♠ 1 246482 247478 N/A N/A N/A
15:1 Ratio ♠ 1 246292 247008 248213 249008 250301
25:1 Ratio ♠ Ƒ 1 246293 247005 248214 249005 250005
52 First Stage Gear Key Ÿ 1 245218 247218 248218 248218 248218

Countershaft Bearings
54 Countershaft Bearing Cone, Input Side 1 402054 402256 402057 402109 402232
55 Countershaft Bearing Cup, Input Side 1 403159 403053 403143 403078 402231
56 Countershaft Bearing Cone, Backstop Side 1 402052 402256 402148 402109 402232
57 Countershaft Bearing Cup, Backstop Side 1 403142 403053 403106 403078 402231
58 Countershaft Bearing Cover, Input Side 1 246185 247194 248223 249225 272251
59 Countershaft Bearing Shim Pack ‡ 391165 390429 391182 390168 390575

Taper Bore Output Hub Assembly Ƈ 1 390935 390941 390944 390949 390954
Straight Bore Output Hub Assembly ƅ 1 390988 390990 390993 390159 390160
60 Straight Bore Hub Ŷ 1 246338 247338 248332 250090 250008
Taper Bore Hub Ÿ 1 246269 272137 272036 249140 272241
62 Output Gear ŸŶ 1 246295 247215 248215 021764 250007
64 Output Gear Key ŸŶ 2 245217 245217 248217 443413 250017

22
 Parts for TXT6A thru TXT10A Straight and Tapered Bushed Double Reduction Reducers

Ref. Description Qty. TXT6A TXT7A TXT8A TXT9A TXT10A

68 Output Hub Collar, Straight Bore 2 246309 247309 248209 249209 250009
70 Output Hub Collar Screw 4 400154 400190 400190 400194 400194

72 Bushing Backup Plate, Taper Bore 2 246270 272138 272037 272082 272242
74 Output Hub Retaining Ring 2 421055 421099 421098 421097 421069
76 Output Hub Seal Carrier, Input Side 1 246187 247315 258021 249221 250011

Output Hub Bearing Kit 1

80 Output Hub Bearing, Cone 2 402050 402058 402147 402160 402168
81 Output Hub Bearing, Cup 2 403140 403111 403105 403110 403116
82 Output Hub Bearing Shim Kit ‡ 391187 390044 390048 390171 390172

84 Taper Bore Bushing Assembly Ƈ

Bushing Ÿ
2-3/16” Bore 1 246261 N/A N/A N/A N/A
2-1/4” Bore 1 246262 N/A N/A N/A N/A
2-7/16” Bore 1 246263 272125 N/A N/A N/A
2-1/2” Bore 1 246264 N/A N/A N/A N/A
2-11/16” Bore 1 246265 272147 N/A N/A N/A
2-13/16” Bore 1 N/A 272130 N/A N/A N/A
2-7/8” Bore 1 246266 272131 N/A N/A N/A
2-15/16” Bore 1 246267 272132 272048 N/A N/A
3” Bore 1 246283 272133 N/A N/A N/A
3-3/16” Bore 1 N/A 272134 N/A N/A N/A
3-7/16” Bore 1 246268 272135 272032 272056 N/A
3-15/16” Bore 1 N/A 272136 272033 272077 272214
4-3/16” Bore 1 N/A N/A 272034 N/A N/A
4-7/16” Bore 1 N/A N/A 272035 272079 272238
4-15/16” Bore 1 N/A N/A N/A 272080 272239
5-7/16” Bore 1 N/A N/A N/A N/A 272240
86 Taper Bushing Screw Ÿ 6 411435 411456 411457 411484 411484
88 Taper Bushing Lockwasher Ÿ 6 419012 419013 419013 419014 419014

90 Key, Bushing to Shaft Ÿ

2-3/16” Bore 1 443211 N/A N/A N/A N/A
2-1/4” Bore 1 443211 N/A N/A N/A N/A
2-7/16” Bore 1 443214 443248 N/A N/A N/A
2-1/2” Bore 1 443214 N/A N/A N/A N/A
2-11/16” Bore 1 443238 443248 N/A N/A N/A
2-13/16” Bore 1 N/A 443199 N/A N/A N/A
2-7/8” Bore 1 443236 443199 N/A N/A N/A
2-15/16” Bore 1 443237 443199 443247 N/A N/A
3” Bore 1 443252 443216 N/A N/A N/A
3-3/16” Bore 1 N/A 443235 N/A N/A N/A
3-7/16” Bore 1 443213 443217 443171 443249 N/A
3-15/16” Bore 1 N/A 443218 443173 272119 443192
4-3/16” Bore 1 N/A N/A 443174 N/A N/A
4-7/16” Bore 1 N/A N/A 443196 272066 443193
4-15/16” Bore 1 N/A N/A N/A 443161 443194
5-7/16” Bore 1 N/A N/A N/A N/A 443195
1
§ Key, Bushing to Output Hub Ÿ
2-3/16” thru 2-1/2” Bore Bushing 1 443212 N/A N/A N/A N/A
2-7/16” thru 3” Bore Bushing 1 N/A 443198 N/A N/A N/A
2-3/16” thru 2-15/16” Bore Bushing 1 N/A N/A N/A N/A N/A
2-15/16” thru 3-7/16” Bore Bushing 1 N/A N/A 443162 N/A N/A
3-7/16” thru 4-3/16” Bore Bushing 1 N/A N/A N/A 443121 N/A
3-15/16” thru 4-7/16” Bore Bushing 1 N/A N/A N/A N/A 443191

Torque-Arm Rod Kit Ƈ 1 246097 247098 390129 390129 390129

94 Torque-Arm Rod End ▲ 1 245245 247239 271050 271050 271050
96 RH Nut ▲ 1 407097 407099 407104 407104 407104
98 Torque-Arm Turnbuckle ▲ 1 245246 247246 271051 271051 271051
100 Torque-Arm Extension ▲ 1 245247 247240 271052 271052 271052
102 LH Nut ▲ 1 407246 407248 407250 407250 407250
104 Fulcrum ▲ 1 247248 247248 271054 271054 271054
106 Fulcrum Screw ▲ 1 411489 411489 411516 411516 411516
108 Lockwasher ▲ 419014 419014 419020 419020 419020
110 Hex Nut ▲ 1 407093 407093 407099 407099 407099

23
 Parts for TXT6A thru TXT10A Straight and Tapered Bushed Double Reduction Reducers

Ref. Description Qty. TXT6A TXT7A TXT8A TXT9A TXT10A

Adapter Assembly Ƈ 1 259156 259157 248110 249110 250110
112 RH Adapter Plate ▲ 1 246242 247242 272053 249241 250041
114 LH Adapter Plate ▲ 1 246241 247241 272053 249241 250041
116 Adapter Bushing ▲ 1 245243 247244 271046 271046 211046
118 Adapter Bolt ▲ 1 411460 411489 411510 411512 411512
120 Lockwasher ▲ 1 419013 419014 419020 419020 419020
122 Hex Nut ▲ 1 407091 407093 407099 407099 407099

124 Hydroil Motor Adapter 1 246465 247464 N/A N/A N/A

Hydroil 6B Motor Adapter 1 246522 247522 N/A N/A N/A
126 Hydroil Adapter Screw 6 417108 417141 N/A N/A N/A
128 Lockwasher 6 906406 907406 N/A N/A N/A
§ Motor to Adapter Screw
§ Motor to Adapter Lock Washer
Notes:
§ Not shown on drawing.
Ƈ Includes parts listed immediately below marked “▲”.
▲ Makes up assembly under which it is listed.
ƅ Includes parts listed immediately below marked “Ŷ”.
Ŷ Makes up assembly under which it is listed.
♠ See Table 9 for actual ratio.
† Required only with optional backstop, 1 required on TXT6A and TXT7A, 2 required on TXT8A, TXT9A, & TXT10A.
‡ 2 sets recommended.
¨ 18 Required on TXT6A, 20 Required on TXT7A, and 24 Required on TXT8A, TXT9A, & TXT10A.
ƒ Nominal Ratio on TXT6A, TXT7A, and TXT8A is 25:1, Nominal Ratio on TXT9A is 26:1, and Nominal Ratio on TXT10A is 24:1.

ACTUAL RATIOS
Table 9 – Actual Ratios
Nominal Ratios
Reducer Size
9:1 15:1 25:1*
TXT1A 9.44 15.35 25.64
TXT2A 9.25 14.10 23.46
TXT3B 8.91 14.88 24.71
TXT4B 9.67 15.13 24.38
TXT5C 8.95 15.40 25.56
TXT6A 9.20 15.33 25.13
TXT7A 9.61 15.23 24.59
TXT8A N/A 15.08 24.62
TXT9A N/A 15.12 25.66
TXT10A N/A 15.16 24.30
* TXT9A is 26:1 Nominal Ratio and TXT10A is 24:1 Nominal Ratio

24