Before starting a vehicle always be seated in the driver’s seat, place the transmission in neutral, set the parking brakes and
disengage the clutch.
Before working on a vehicle place the transmission in neutral, set the parking brakes and block the wheels.
Before towing the vehicle place the transmission in neutral, and lift the rear wheels off the ground, remove the axle shafts,
or disconnect the driveline to avoid damage to the transmission during towing.
The description and specifications contained in this service publication are current at the time of printing.
Eaton Corporation reserves the right to discontinue or modify its models and/or procedures and to change specifications at any
time without notice.
Any reference to brand name in this publication is made as an example of the types of tools and materials recommended for use
and should not be considered an endorsement. Equivalents may be used.
This symbol is used throughout this manual to call attention to procedures where carelessness or failure to follow
specific instructions may result in personal injury and/or component damage.
Departure from the instructions, choice of tools, materials and recommended parts mentioned in this publication may jeopardize
the personal safety of the service technician or vehicle operator.
WARNING
Warning: Failure to follow indicated procedures creates a high risk of personal injury to the service technician.
Caution: Failure to follow indicated procedures may cause component damage or malfunction.
Note: Additional service information not covered in the service procedures.
Tip: Helpful removal and installation procedures to aid in the service of this unit.
This manual is designed to provide information necessary to service and repair the Eaton Fuller transmissions listed on the front.
How to use this Manual
The service procedures have been divided into two sections: In-Vehicle Service Procedures and Transmission Overhaul Procedures—Bench Service. In-Vehicle Service Procedures contain procedures that can be performed while the transmission is still
installed in the vehicle. Transmission Overhaul Procedures contain procedures that are performed after the transmission has
been removed from the vehicle.
The procedure sections are laid out with a general heading at the top outside edge of each page followed by more specific headings and the procedures. To find the information you need in these sections, first go to the section that contains the procedure
you need. Then look at the heading at the top and outside edge of each page until you find the one that contains the procedure
you need.
Transmission Overhaul Procedures follow the general steps for complete disassembly and then assembly of the transmission.
Note: In some instances the transmission appearance may be different from the illustrations, but the procedure is the same.
Disassemble Precautions
It is assumed in the detailed assembly instructions that the lubricant has been drained from the transmission, the necessary linkage and vehicle air lines disconnected and the transmission has been removed from vehicle chassis. Removal of the gear shift
lever housing assembly (or remote control assembly) is included in the detailed instructions (How to Remove the Gear Shift
Lever). This assembly MUST be detached from the shift bar housing before the transmission can be removed.
Introduction
Follow closely each procedure in the detailed instructions, make use of the text, illustrations, and photographs provided.
Assemblies
•When disassembling the various assemblies, such as the mainshaft, countershafts, and shift bar housing, lay all parts
on a clean bench in the same sequence as removed. This procedure will simplify assembly and reduce the possibility of
losing parts.
Bearings
•Carefully wash and lubricate all usable bearings as removed and protectively wrap until ready for use. Remove bearings
planned to be reused with pullers designed for this purpose.
Cleanliness
•Provide a clean place to work. It is important that no dirt or foreign material enters the unit during repairs. Dirt is an
abrasive and can damage bearings. It is always a good practice to clean the outside of the unit before starting the
planned disassembly.
Input Shaft
•The input shaft can be removed from the transmission without removing the countershafts, mainshaft, or main drive
gear. Special procedures are required and provided in this manual.
Snap Rings
•Remove snap rings with pliers designed for this purpose. Snap rings removed in this manner can be reused, if they are
not sprung or loose.
4
Introduction
When Using Tools to Move Parts
•Always apply force to shafts, housings, etc., with restraint. Movement of some parts is restricted. Never apply force to
driven parts after they stop solidly. The use of soft hammers, soft bars, and mauls for all disassembly work is recommended.
Inspection Precautions
Before assembling the transmission, check each part carefully for abnormal or excessive wear and damage to determine reuse or
replacement. When replacement is necessary, use only genuine Eaton® Fuller® Transmission parts to assure continued performance and extended life from your unit.
Since the cost of a new part is generally a small fraction of the total cost of downtime and labor, avoid reusing a questionable part
which could lead to additional repairs and expense soon after assembly. To aid in determining the reuse or replacement of any
transmission part, consideration should also be given to the unit's history, mileage, application, etc.
Recommended inspection procedures are provided in the following checklist.
Bearings
•Wash all bearings in clean solvent. Check balls, rollers, and raceways for pitting, discoloration, and spalled areas.
Replace bearings that are pitted, discolored, spalled, or damaged during disassembly.
•Lubricate bearings that are not pitted, discolored, or spalled and check for axial and radial clearances.
•Replace bearings with excessive clearances.
•Check bearing fit. Bearing inner races should be tight to shaft; outer races slightly tight to slightly loose in case bore. If
the bearing spins freely in the bore the case should be replaced.
Bearing Covers
•Check covers for wear from thrust of adjacent bearing. Replace covers damaged from thrust of bearing outer race.
•Check cover bores for wear. Replace those worn or oversized.
Clutch Release Parts
•Check clutch release parts. Replace yokes worn at cam surfaces and bearing carrier worn at contact pads.
•Check pedal shafts. Replace those worn at bushing surfaces.
Gears
•Check gear teeth for frosting and pitting. Frosting of gear teeth faces presents no threat of transmission failure. Often in
continued operation of the unit, frosted gears "heal" and do not progress to the pitting stage. In most cases, gears with
light to moderate pitted teeth have considerable gear life remaining and can be reused, but gears in the advanced stage
of pitting should be replaced.
•Check for gears with clutching teeth abnormally worn, tapered, or reduced in length from clashing during shifting.
Replace gears found in any of these conditions.
•Check axial clearance of gears.
Gear Shift Lever Housing Assembly
•Check spring tension on shift lever. Replace tension spring if lever moves too freely.
•If housing is disassembled, check gear shift lever bottom end and shift finger assembly for wear. Replace both gears if
excessively worn.
5
Gray Iron Parts
Introduction
•Check all gray iron parts for cracks and breaks. Replace parts found to be damaged.
Oil Return Threads and Seals
•Check oil return threads on the input shaft. If return action of threads has been destroyed, replace the input shaft.
•Check oil seal in rear bearing cover. If sealing action of lip has been destroyed, replace seal.
O-Rings
•Check all O-rings for cracks or distortion. Replace if worn.
Reverse Idler Gear Assemblies
•Check for excessive wear from action of roller bearings.
Shift Bar Housing Assembly
•Check for wear on shift yokes and blocks at pads and lever slot. Replace excessively worn parts.
•Check yokes for correct alignment. Replace sprung yokes.
•Check lockscrews in yoke and blocks. Tighten and rewire those found loose.
•If housing has been disassembled, check neutral notches of shift bars for wear from interlock balls.
Sliding Clutches
•Check all shift yokes and yoke slots in sliding clutches for extreme wear or discoloration from heat.
•Check engaging teeth of sliding clutches for partial engagement pattern.
Introduction
Splines
•Check splines on all shafts for abnormal wear. If sliding clutch gears, companion flange, or clutch hub has wear marks
in the spline sides, replace the specific shaft effected.
Synchronizer Assembly
•Check synchronizer for burrs, uneven and excessive wear at contact surface, and metal particles.
•Check blocker pins for excessive wear or looseness.
•Check synchronizer contact surfaces on the synchronizer cups for wear.
Washers
•Check surfaces of all washers. Washers scored or reduced in thickness should be replaced.
Assembly Precautions
Make sure that case interiors and housings are clean. It is important that dirt and other foreign materials are kept out of the transmission during assembly. Dirt is an abrasive and can damage polished surfaces of bearings and washers. Use certain precautions, as listed below, during assembly.
Axial Clearances
•Maintain original axial clearances of .006" to .015" for mainshaft gears.
Bearings
•Use a flange-end bearing driver for bearing installation. These special drivers apply equal force to both bearing races,
preventing damage to balls/rollers and races while maintaining correct bearing alignment with bore and shaft. Avoid
using a tubular or sleeve-type driver, whenever possible, as force is applied to only one of the bearing races.
6
Introduction
Capscrews
•To prevent oil leakage and loosening, use Eaton Fuller sealant #71205 on all capscrews.
Gaskets
•Use new gaskets throughout the transmission as it is being rebuilt. Make sure all gaskets are installed. An omission of
any gasket can result in oil leakage or misalignment of bearing covers.
Initial Lubrication
•Coat all limit washers and shaft splines with Lubricant during assembly to prevent scoring and galling of such parts.
O-Rings
•Lubricate all O-rings with silicon lubricant.
Universal Joint Companion Flange or Yoke
•Pull the companion flange or yoke tightly into place with the output shaft nut, using 450-500 lbs. ft. of torque. Make
sure the speedometer drive gear or a replacement spacer of the same width has been installed. Failure to pull the companion flange or yoke tightly into place can result in damage to the mainshaft rear bearing.
IMPORTANT: See the appropriate Illustrated Parts Lists (specified by model number) to ensure that proper parts are used during
assembly of the transmission.
7
Model Designations
Serial Tag Information and Model Nomenclature
Transmission model designation and other transmission identification information are stamped on the serial tag. To identify the
transmission model and serial number, locate the tag on the transmission and then locate the numbers as shown. Figure 1-1
below shows the tag which is located on the transmission.
When calling for service assistance or parts, have the model and serial numbers handy
Do not remove or destroy the transmission identification tag!
Model Designations
Fig 1-1
Transmission Tag and Location
Model Number
The model number gives basic information about the transmission and is explained below. Use this number when calling for service assistance or replacement parts.
RT-12609A
RT Roadranger Twin Countershaft
RTF w/ Forward Shift Bar Housing
RTO w/ Overdrive
RTOO w/ Double Overdrive
RTOF w/ Overdrive and Forward Shift
Bar Housing
RTOOF w/ Double Overdrive and Forward
Shift Bar Housing
RTX w/ Overdrive and Direct Shift Pattern
RTXF w/ Overdrive, Direct Shift Pattern and
Forward Shift Bar Housing
7 = Helical Auxilary Gearing and
"Multi-Mesh" Front Gearing
This (x) 100 = Nominal Torque Capacity
5 = "Spur" Gearing
6 = "Multi-Mesh" Gearing
Serial Number
The serial number is the sequential identification number of the transmission. Before calling for service assistance, write the
number down as it may be needed.
Bill of material or Customer number
This number may be located below the model and serial numbers. It is a reference number used by Eaton®.
Ratio Set
Forward Speed
8
Model Designations
Model Options
Torque Rating
The torque rating of the transmission specified in the model number is the input torque capacity in lb. ft. Various torque ratings
are available. For more information, call the Roadranger Help Desk at 1-800-826-HELP (4357).
Two types of shift bar housings are available for this transmission. Both are described and shown below.
Shift Bar housings
Standard: The standard shift bar housing has a gear shift lever opening that is located toward the rear of the transmission. The
housing is shown in figure 1-2.
Fig 1-2
9
Model Designations
Forward Opening: The forward opening shift bar housing has a gear shift lever opening located three inches closer to the front of
the transmission than the standard opening. This forward design allows greater flexibility in mounting the transmission and in
indicated by an “F” in the model number. The housing is shown in figure1-3.
Model Designations
Fig 1-3
Lubrication Pumps
Two types of lubrication pumps are available for use on this transmission and are described below:
PTO Driven: A PTO driven pump is externally mounted on the 6 or 8 bolt PTO openings and driven off the PTO gear.
Auxiliary Countershaft: An auxiliary countershaft pump is mounted on the rear of the transmission and driven off the auxiliary
countershaft.
Power Take Off (PTO) Usage
PTOs can be mounted in the following ways:
6 or 8 Bolt: The 6 or 8 bolt openings are standard with the transmission. The PTO is mounted to the opening and driven from the
PTO gear on the front countershaft.
Thru-Shaft: The thru-shaft PTO mounts on the rear of the transmission. It requires a special auxiliary housing and main case
countershaft with internal splines.
* Lengths measured from face of clutch housing to front bottoming surface of companion flange or yoke.
** Weights include SAE No.1 cast iron clutch housing and standard controls (control valve, gear shift lever and housing assem-
bly, and air lines), less clutch release parts. All weights are approximate.
***Oil Capacities are approximate, depending on inclination of engine and transmission. Always fill transmission with proper
grade and type of lubricant to level of filler opening. See “Lubrication” on page 14.
11
Specifications
Torque Ratings
Correct torque application is extremely important to assure long transmission life and dependable performance. Overtightening
or under-tightening can result in a loose installation and, in many instances, eventually cause damage to transmission gears,
shafts or bearings. Use of a thread sealer/locking compound is recommended for all capscrews. Do not torque capscrews dry.
Proper lubrication procedures are the key to a good all-around maintenance program.
®
Fuller
Transmissions are designed so that the internal parts operate in an oil circulating bath created by the motion of the gears
and shafts.
All parts will be properly lubricated if these procedures are closely followed:
•Maintain oil level. Inspect regularly.
•Follow maintenance interval chart.
•Use the correct grade and type of oil.
•Buy from a reputable dealer.
Maintain Proper Oil Level
Make sure oil is level with the filler opening. Being able to reach oil with your finger does not mean oil is at proper level. (One
inch of oil level is about one gallon of oil.)
When adding oil, never mix engine oils and gear oils in the same transmission.
Additives and friction modifiers must not be introduced.
Buy from a reputable dealer.
The use of lubricants not meeting requirements will affect warranty coverage.
Lubrication Information
For additional lubrication information and lube intervals, see TCMT0021 or call 1-800-826-HELP (4357).
For a list of approved lubricants, see TCMT0020 or call 1-800-826-HELP (4357).
Oil Level
Hole
Proper Oil Level
Hole
Improper Oil Level
Lubrication
Oil Filter
For transmissions equipped with oil filter, P/N 4304827.
•For highway use - Inspect filter for leaks or damage replace as necessary.
•For off-highway use - Change filter every two years.
14
Lubrication
If your vehicle has a transmission oil filter, you must change the filter when fluid or lubricant is changed.
Transmission Operating Angles
If the transmission operating angle is more than 12 degrees, improper lubrication will occur. The operating angle is the transmission mounting angle in the chassis plus the percent of upgrade (expressed in degrees). For operating angles over 12 degrees, the
transmission must be equipped with an oil pump or cooler kit to insure proper lubrication.
Operating Temperatures with Oil Coolers
The transmission must not be operated consistently at temperatures above 250° F. Operation at temperatures above 250°F
[121°C] causes loaded gear tooth temperatures to exceed 350°F [177°C] which will ultimately destroy the heat treatment of the
gears. If the elevated temperature is associated with an unusual operating condition that will reoccur, a cooler should be added,
or the capacity of the existing cooling system increased.
The following conditions in any combination can cause operating temperatures of over 250° F [121°C]:
•Operating consistently at slow speed.
•High ambient temperatures.
•Restricted air flow around transmission.
•Use of engine retarder.
•High horsepower operation.
Note: Transmission coolers must be used to reduce the operating temperatures when the above conditions are encountered.
Oil Cooler Chart
Transmission Oil Coolers are:
Recommended
• With engines of 350 H.P. and above.
Required
• With engines 399 H.P. and above and GCW’s over 90,000 lbs.
• With engines 399 H.P. and above and 1400 lb. ft. or greater torque.
• With engines 1500 lb. ft. and above
15
Tool Information
Tool Information
Some repair procedures pictured in this manual show the use of specialized tools. Their actual use is recommended as they
make transmission repair easier, faster, and prevent costly damage to critical parts.
But for the most part, ordinary mechanic's tools such as socket wrenches, screwdrivers, etc., and other standard shop items
such as a press, mauls and soft bars are all that is needed to successfully disassemble and reassemble any Eaton Fuller Transmission.
Recommended Tools
The following tables list and describe the typical tools required to properly service this model transmission above and beyond the
necessary basic wrenches, sockets, screwdrivers, and prybars.
General Tools
The following tools are available from several tool manufacturers such as Snap-On, Mac, Craftsman, OTC, and many others.
TOOL PURPOSE
0 - 100 lbs. ft. 1/2" drive Torque Wrench. General torquing of fasteners (typically 15-80 lbs. ft.).
0 - 600 lbs. ft. 3/4" or 1" drive Torque Wrench. Torquing of output nut to 500 lbs. ft.
0 - 50 lbs. in. 3/8" drive Torque Wrench. General torquing of fasteners.
0 - 30 lbs. in. 1/4" drive Torque Wrench. Torquing of capscrews to 7 lbs. in. during auxiliary countershaft bearing
endplay setting procedure.
70 MM or 2-2/4" Socket - Standard Depth To remove the output yoke nut.
Large Brass Drift Used to protect shafts and bearings during removal.
Large Dead Blow Hammer or Maul To provide force for shaft and bearing removal.
Snap Ring Pliers - Large Standard External To remove the snap rings at the auxiliary drive gear, input shaft bearing,
and countershaft bearings.
Feeler Gauges To set mainshaft washer endplay and auxiliary tapered bearing endplay.
Rolling Head (Crow's Foot) Prybar To remove the auxiliary drive gear bearing.
(2) Air Pressure Gauges 0-100 PSI (0-1034 kPa) To troubleshoot and verify correct operation of air system.
Universal Bushing Driver To remove and install clutch housing bushings. Bushing OD = 1.125",
ID = 1.000"
Tool Information
16
Tool Information
Eaton Fuller Model Special Tools
The following special tools are designed for this Eaton® Fuller® transmission. The addresses and phone numbers of the tool
suppliers are listed after the table. This list is provided as a convenience to our customers. These tools are manufactured by independent companies with no relationship to Eaton® Fuller®. Eaton® Fuller® does not warrant the fit or function of the listed
tools. To obtain the tools, contact the tool supplier directly.
REF.
NO.
T1 Output Yoke PullerMay be required to remove a rusted
T2 Auxiliary Section HangerTo support, or hang, the auxiliary sec-
T3 Auxiliary
Countershaft
Support and Shim Tool
T4 Shift Lever Spring
Installation Tool
(Tension Spring Driver)
T5 Slide Hammer To remove the output seal and reverse
T6 Bearing Puller To remove front section countershaft
TOOLPURPOSEG & W TOOL
output yoke.
tion in the horizontal position.
To hold the auxiliary countershafts in
position while installing the auxiliary
section in the horizontal position. Also
to simplify the
checking and setting of the auxiliary
countershaft bearing endplay.
To install the shift tower tension
spring.
idler shafts. Requires 1/2"-13 threads.
(Optional, idler shaft can be driven out
from front.)
bearings.
GREAT LAKES
NO.
SP-4507075
G-40T-1255061
G-250T-3115062
G-116T-170
G-70 T-1501155 Slide
G-10 or G-15 T-100 7070A Kit
TOOL NO.
OTC TOOL
NO.
Hammer /
8007 1/2" -13
Adapter
T7 Bearing Driver To install front section countershaft
bearings (3.97" OD, 1.78" ID).
T8 Bearing Driver To install the front countershaft rear
T17 Bearing Race PullerTo remove the auxiliary countershaft
T18 Bearing Race InstallerTo install the auxiliary countershaft
* Tool numbers are referenced in the service procedures.
TOOLPURPOSEG & W TOOL
NO.
To attach transmission jack to
auxiliary section for auxiliary
section removal in chassis.
front section.
tapered bearing outer races.
tapered bearing outer races.
G-115 49611
G-225 T-165
G-247B
attached to G70 impact
puller
G-200 KitT-101 Kit27524/27530
GREAT LAKES
TOOL NO.
T-157 with
T-150
OTC TOOL
(Used with OTC
transmission
jack P/N 5019.)
7136 puller
attached to
1155 slide
hammer
discs used with
27488 handle
and 10020
screw.
Shop Equipment
NO.
20 Ton capacity pressTo press countershaft gears from countershaft.
Special Tools Manufacturers
Below are the addresses and phone numbers of the companies that make tools specifically for Eaton® Fuller® transmissions.
G and W Tool CompanyGreat Lakes ToolO.T.C.
1105 E. Louisville8530 M-89655 Eisenhower Dr.
Broken Arrow, OK 74012-5724Richland, MI 49083Owatonna, MN 55060-1171
800-247-5882800-877-9618800-533-6127
The specialized tools can be obtained from a tool supplier or made from tool prints as required by the individual user. Detailed
Eaton Fuller Transmission Tool Prints are available upon request by writing to:
Eaton Corporation
Truck Components Operations
Technical Service
P.O. Box 4013
Kalamazoo, Michigan 49003
Tool Information
18
Tool Information
Eaton Aftermarket Parts
The following tools are available through Eaton Aftermarket Parts. To obtain any of the tools listed, contact your local Eaton®
parts distributor.
TOOL PURPOSE EATON PART NUMBER
5/32" Air Line Release Tool To remove 5/32" air lines from
push-to-connect fittings.
Air Line Cutting Tool To cut plastic air lines smoothly
and squarely.
Output Seal Driver To install output seal. For 7 series: Eaton P/N 5564501 driver.
Output Seal Slinger Driver To install output seal slinger. For 7 series: Eaton P/N 71223.
P/N 4301157 included in kit K-2394.
P/N 4301158 included in kit K-2394.
For 9 series: Use Eaton P/N 5564509 adapter with 5564501
driver. Both parts included in Complete Eaton Seal Kit P/N K-
3651.
For 9 series: Eaton P/N 4303829.
19
Preventative Maintenance
Preventative Maintenance
Everyday there are countless vehicles operating over the highways with transmissions in such a neglected mechanical condition,
they can be referred to as failures looking for a place to break down. They lack a proper and organized preventive maintenance
program.
Preventive maintenance is a general term which applies to all procedures necessary to have maximum life and satisfactory service at the lowest possible cost, short of removing and repairing the unit.
A number of conditions contrary to good preventive maintenance can generally be pointed to when inspecting a failed transmission. Taking a few minutes every so many hours or miles to do a few simple checks could help avoid eventual breakdown or
reduce the repair cost. If the transmission is not cared for, it will breakdown.
Preventative Maintenance Check Points
Preventative Maintenance
1
2
8
9
7
4
10
6
Note: Transmission appearance may differ, the procedure is the same.
5
20
Preventative Maintenance
Air System and Connections (1)
•Check for leaks, worn air lines, loose connections and capscrews.
Clutch Housing Mounting (2)
•Check all capscrews of clutch housing flange for looseness.
Clutch Release Bearing (Not Shown)
•Remove hand hole cover and check radial and axial clearance in release bearing.
•Check relative position of thrust surface of release bearing with thrust sleeve on push-type clutches.
Clutch Pedal Shaft and Bores (4)
•Pry upward on shafts to check wear.
•If excessive movement is found, remove clutch release mechanism and check bushings on bores and wear on shafts.
See OEM literature.
Lubricant (5)
•Change at specified service intervals.
•Use only the types and grades as recommended. See "Recommended Lubrication Chart".
Filler and Drain Plugs (6)
•Remove filler plugs and check level of lubricant at specified intervals. Tighten fill and drain plugs securely.
Capscrews and Gaskets (7)
•For applicable models, check all capscrews, especially those on PTO covers and rear bearing covers for looseness
which would cause oil leakage.
•Check PTO opening and rear bearing covers for oil leakage due to faulty gasket.
Gear Shift Lever (8)
•Check for looseness and free play in housing. If lever is loose in housing, proceed with Check No. 9.
Gear Shift Lever Housing Assembly (9)
•If present, remove air lines at air valve or slave valve. Remove the gear shift lever housing assembly from the transmission.
•Check the tension spring and washer for set and wear.
•Check the gear shift lever spade pin and slot for wear.
•Check bottom end of gear shift lever for wear and check slot of yokes and blocks in shift bar housing for wear at contact
points with shift lever.
Checks With Drive Line Dropped
Universal Joint Companion Flange or Yoke Nut (10)
•Check for tightness. Tighten to recommended torque.
Output Shaft (Not Shown)
•Pry upward against output shaft to check radial clearance in mainshaft rear bearing.
21
Preventative Maintenance
Checks With Universal Joint Companion Flange or Yoke Removed
Note: If necessary, use solvent and shop rag to clean sealing surface of companion flange or yoke. Do not use crocus cloth,
emery paper, or other abrasive materials that will mar surface finish.
Splines on Output Shaft (Not Shown)
•Check for wear from movement and chucking action of the universal joint companion flange or yoke.
Mainshaft Rear Bearing Cover (13)
•Check oil seal for wear.
Preventative Maintenance
22
Preventative Maintenance
Oil Leak Inspection Process
Inspect for Oil Leak
Determine if it is a Weep or a Leak
Weep: Stained, damp, no drips, light oil film,
dirt adhered to the contaminated area.
GasketRear Seal Leak
Leak: Extremely wet or dripping of oil in the
contaminated area.
Step 1
1. Clean suspected oil weep
area with a clean dry cloth
or mild soluble degreaser.
2. Ensure lube is to proper
level.
3. Notify the customer that it
is only a weep and it is not
considered to be detrimental
to the life of the transmission.
4. Repair is complete.
1. Do not repair: Rear seal is
designed to allow minimal
seepage (refer to Roadranger
TCSM-0912 Seal Maintance
Guide).
2. Ensure lube is to proper
level.
Step 2
Step 3
1. Determine the origin of the leak path.
2. If origin of leak is obvious skip to Step 3.
3. If the origin of the oil leak is not obvious then
use either of the two following steps to determine
the oil leak:
Note: Do not use a high pressure spray washer to
clean the area. Use of a high pressure spray may
force contamination into the area of concern and
temporarily disrupt the leak path.
i. Clean area with a clean dry cloth or mild
soluble degreaser and fill the transmission to
the proper lube level.
OR
ii. Clean the area as noted above and insert tracer
dye into the transmission lube and fill
transmission to proper lube level.
Operate vehicle to normal transmission operating
temperature and inspect the area for oil leak(s)
visually or if tracer dye was introduced use an UVL
(Ultraviolet Light) to detect the tracer dye’s point
of origin.
Note: When inspecting for the origin of the leak(s)
make sure the assumed leak area is not being
contaminated by a source either forward or above
the identified area such as the engine, shift tower,
shift bar housing, top mounted oil cooler, etc...
Once the origin of the leak is identified, repair the
oil leak using proper repair procedures from the
designated model service manual.
23
Step 4
After the repair is completed, verify the leak is
repaired and operate the vehicle to normal
transmission operating temperature.
Inspect repaired area to ensure oil leak has been
eliminated. If the leak(s) still occurs, repeat steps
or contact the Roadranger Call Center at
1-800-826-4357.
Preventative Maintenance
Inspection
Part to Inspect What to Check For Action to be Done
Speedometer Connections Speedometer cables should not be
loose.
Should be an O-ring or gasket between
the mating speedometer sleeve and the
rear bearing cover.
Rear Bearing Cover Capscrews, Gasket,
and Nylon Collar
Check retaining capscrews for tightness. Apply Eaton Sealant #71205 to the cap-
Verify nylon collar and gasket are
installed at the chamfered hole, aligned
near the mechanical speedometer opening.
Verify that a rear bearing cover gasket is
in place.
Applied hydraulic thread sealant #71208
to threads.
Torque speedometer sleeve to
35-50 lbs. ft.
Replace the O-ring/gasket if damaged or
missing.
screw threads.
Torque capscrews to 35-45 lbs. ft.
Use new parts if need to replace.
Apply Eaton Sealant #71205 to the capscrew threads.
Torque capscrews to 35-45 lbs. ft.
Install a new gasket if rear bearing cover
was removed.
Preventative Maintenance
Output Yoke Retaining Nut Check the output yoke retaining nut for
tightness.
PTO Covers and Openings Check the capscrews for tightness. Apply Eaton Sealant #71205 to the cap-
Gray Iron Parts Check front bearing cover, front case,
shift bar housing, rear bearing cover,
and clutch housing for cracks or breaks.
Front Bearing Cover Check return threads for damage. If threads damaged, replace the input
Check the capscrews for tightness. Tighten the capscrews to 35-45 lbs. ft.
Oil Cooler and Oil Filter Check all connectors, fittings, hoses,
and filter element for tightness.
Oil Drain Plug, Oil Fill Plug Check the oil drain plug and the oil fill
plug for leakage.
Torque the output yoke retaining nut to
450-500 lbs. ft. Do not over torque the
output nut.
screw threads.
Tighten 6 bolt PTO capscrews to
35-45 lbs. ft.
Tighten 8 bolt PTO capscrews to
50-65 lbs. ft.
Replace parts found to be damaged.
shaft.
Tighten any loose fittings.
Torque the oil drain plug to 45-55 lbs. ft.
Torque the oil fill plug to 60-70 lbs. ft.
24
Power Flow
Power Flow
The transmission must efficiently transfer the engine's power, in terms of torque, to the vehicle's rear wheels. Knowledge of what
takes place in the transmission during torque transfer is essential when troubleshooting and making repairs.
Front Section Power Flow (All Models)
•Power (torque) from the vehicle's engine is transferred to the transmission's input shaft. (1)
•Splines of input shaft engage internal splines in hub of main drive gear. (2)
•Torque is split between the two countershaft drive gears. (3)
•Torque is delivered along both countershafts to mating countershaft gears of "engaged" mainshaft gear. The cross section views illustrate 1st/6th speed gear engagement. (4)
•Internal clutching teeth in hub of engaged mainshaft gear transfers torque to mainshaft through sliding clutch. (5)
•Mainshaft transfers torque directly to rear auxiliary drive gear. (6)
Auxiliary Section Power Flow:
LO RANGE (All Models)
•The auxiliary drive gear splits torque between the two auxiliary countershaft drive gears. (7)
•Torque is delivered along both auxiliary countershafts to the "engaged" LO RANGE gear on range mainshaft or output
shaft. (8)
•Torque is transferred to range mainshaft or output shaft through sliding clutch. (9)
•Torque is delivered to driveline as LO RANGE 1st. (10)
25
Power Flow
Auxiliary Section Power Flow HI RANGE (All Models)
•The auxiliary drive gear transfers torque directly to the range mainshaft or output shaft through "engaged" sliding clutch.
(7)
•Torque is delivered through the range mainshaft and/or output shaft to driveline as HI RANGE 6th. (8)
Power Flow
26
Timing
Timing Procedures
Special Instructions
It is essential that both countershaft assemblies of the front and auxiliary sections are "timed." This assures proper tooth contact
is made between mainshaft gears seeking to center on the mainshaft during torque transfer and mating countershaft gears that
distribute the load evenly. If not properly timed, serious damage to the transmission is likely to result from unequal tooth contact
causing the mainshaft gears to climb out of equilibrium.
Timing is a simple procedure of marking the appropriate teeth of a gear set prior to installation and placing them in proper mesh
while in the transmission. In the front section, it is necessary to time only the drive gear set. And depending on the model, only
the LO range, deep reduction, or splitter gear set is timed in the auxiliary section.
Procedure - Front Section
1.Marking countershaft drive gear teeth: Prior to placing
each countershaft assembly into the case, clearly mark the
tooth located directly over the drive gear keyway as shown.
This tooth is stamped with an "O" to aid identification.
2.Marking main drive gear teeth: Mark any two adjacent
teeth on the main drive gear.
Mark the two adjacent teeth located directly opposite the
first set marked on the main drive gear. As shown to the
left, there should be an equal number of unmarked gear
teeth on each side between the marked sets.
3.Meshing marked countershaft drive gear teeth with marked main drive gear teeth: After placing the mainshaft
assembly into the case, the countershaft bearings are
installed to complete installation of the countershaft assemblies.
When installing the bearings on the left countershaft, mesh
the countershaft drive gear marked tooth with either set of
main drive gear two marked teeth.
Repeat the procedure when installing the bearings on the
right countershaft, make use of the remaining set of main
drive gear two marked teeth to time assembly.
27
Procedure - Auxiliary Section
4.Marking the helical auxiliary countershafts: Mark any two
teeth on the LO range gear. Then mark two teeth located
directly opposite the first marked.
Prior to placing each auxiliary countershaft assembly into
housing, mark the tooth on each auxiliary countershaft
assembly LO range gear stamped with the two "O"s. Repeat
the procedure on each auxiliary countershaft reduction
gear.
Follow the assembly procedures in the “How to Install the
Auxiliary Section With Tapered Bearings” on page 165.
Timing
Timing
28
Air System
How to Remove Compression Type Fittings
Special Instructions
WARNING
A sudden release of air pressure can cause personal injury or damage to equipment. To prevent injury or equipment damage,
exhaust the vehicle air tanks.
CAUTION
Small air lines are available in 1/8" or 5/32" sizes. Make sure 1/8" air lines are used with 1/8" fittings and 5/32" air lines are used
with 5/32" fittings. Mixing sizes can cause air leaks or damage to fittings.
Before removing the air lines and hoses, label or record their location.
Special Tools
Typical service tools
Procedure -
1.Exhaust the vehicle air tanks before continuing.
2.Loosen the nut on the fitting, and slide it back out of the
way.
3.Pull the air line and attached collet from the fitting.
4. Inspect the fitting, air line, collet, and nut for damage or
wear. Replace as necessary.
1342
1. Connector
2. Collet
3. Nut
4. Air Line
29
Air System
How to Install Compression Type Fittings
Special Instructions
WARNING
A sudden release of air pressure can cause personal injury or damage to equipment. To prevent injury or equipment damage,
exhaust the vehicle air tanks.
CAUTION
Small air lines are available in 1/8" or 5/32" sizes. Make sure 1/8" air lines are used with 1/8" fittings and 5/32" air lines are used
with 5/32" fittings. Mixing sizes can cause air leaks or damage to fittings.
Special Tools
Typical service tools
Procedure -
1.Check the threads of the fitting for thread sealant. If no sealant is present, apply Eaton
or equivalent.
2.Install the fitting.
Note: Do not overtighten the nut. Overtightening can com-
press the collet too much and cause an air line
restriction.
3.Install the air line, collet, and nut. If installing a new fitting,
place the collet in the fitting and loosely install the nut. (Do
not tighten the nut yet.) Insert the air line through the nut
and into the collet. Tighten the nut as usual.
®
Fuller® thread sealant #71205
Air System
1342
1. Connector
2. Collet
3. Nut
4. Air Line
4.Enable the vehicle air system. Allow the air tanks to pressurize, and check for leaks. Repair as necessary.
30
Air System
How to Remove Push-To-Connect Type Fittings
Special Instructions
WARNING
A sudden release of air pressure can cause personal injury or damage to equipment. To prevent injury or equipment damage,
exhaust the vehicle air tanks.
CAUTION
Make sure only 5/32" air lines are used with push-to-connect fittings. Using sizes other than 5/32" can cause air leaks or damage
to fittings.
Before removing the air lines and hose, label or record their location.
Special Tools
See “Tool Information”.
For 'push-to-connect' fittings, the Eaton service tool kit K-2394 is recommended.
The kit contains the release tool and the tubing cutter.
Procedure -
1.Exhaust the vehicle air tanks before continuing.
2.Use the air line release tool from kit K-2394 to press the
release sleeve down while pulling the air line from the fitting.
ase Tool
Eaton Fuller
Air Fitting Rele
4301157
3.Inspect the fitting for damage or wear. Remove and replace
as necessary.
31
Air System
How to Install Push-To-Connect Type Fittings
Special Instructions
WARNING
A sudden release of air pressure can cause personal injury or damage to equipment. To prevent injury or equipment damage,
exhaust the vehicle air tanks.
CAUTION
Make sure only 5/32" air lines are used with push-to-connect fittings. Using sizes other than 5/32" can cause air leaks or damage
to fittings.
Special Tools
See “Tool Information”
For 'push-to-connect' fittings, we recommend Eaton service tool kit K-2394. The kit contains the release tool and the tubing cutter.
Procedure -
1.Check the threads of the fitting for thread sealant. If no sealant is present, apply Eaton® Fuller® thread sealant #71205
or equivalent.
2.Install the fitting.
3.Inspect the air line for burrs or deformed areas. Trim the air
line if necessary using a sharp razor blade or the air line
cutting tool from kit K-2394. The cut must be smooth and
square. If the tubing end is deformed or burred, the internal
O-ring in the fitting will be damaged when the air line is
inserted.
4.Push the air line into the fitting. It should insert approximately 3/4". If it does not insert far enough or is difficult to
insert, the fitting may be damaged and should be replaced.
After inserting, give the air line a slight tug to make sure the
line stays in place. If line does not stay in place, replace the
fitting.
Air System
5.Enable the vehicle air system. Allow the air tanks to pressurize, and check for leaks.
32
Air System
How to Remove Rubber 1/4" Air Hoses
Special Instructions
For the 1/4" I.D. air hoses, install the fixed nut end first.
Special Tools
Typical service tools
Procedure -
1.Remove all air line brackets and ties.
2.Remove swivel end.
3.Remove fixed end.
33
How to Install Rubber 1/4" Air Hoses
Special Instructions
For the 1/4" I.D. air hoses, install the fixed nut end first.
Special Tools
Typical service tools
Procedure -
1.If necessary, apply Eaton Fuller thread sealant # 71205 or
equivalent to threads.
2.Install and tighten fixed end first, then install and tighten
swivel end.
3.Replace all air line brackets and ties.
Air System
Air System
34
Air System
How to Install the Air Filter/Regulator
Special Instructions
The air filter/regulator has two (2) O-rings located between the filter/regulator and the range cylinder cover.
Special Tools
Typical service tools
Procedure -
1.Position the air filter/regulator.
2.Apply Eaton/Fuller Sealant #71205 or equivalent to the two
(2) retaining capscrews.
3.Install the two (2) retaining capscrews, tighten to
8-12 lbs. ft. of torque.
35
How to Remove the Air Filter/Regulator
Special Instructions
The air filter/regulator has two (2) O-rings located between the filter/regulator and the auxiliary section.
Special Tools
Typical service tools
Procedure -
1.Remove the air lines from the air filter regulator.
Air System
2.From the air filter/regulator, remove the two (2) capscrews.
Air System
36
Air System
How to Remove a Roadranger Valve
Special Instructions
WARNING
A sudden release of air pressure can injure you or damage equipment. To prevent injury or equipment damage, the vehicle air
tanks must be exhausted.
Special Tools
Typical service tools
Procedure -
1.From the Roadranger valve cover, remove the two (2)
mounting screws.
2.Slide the Roadranger valve cover down.
3.From the air fittings, disconnect the air lines.
4.From the Roadranger base, loosen the jam nut. Rotate the
Roadranger valve until the valve is removed.
5.Inspect the parts: nut, valve cover, air lines, sheathing, and
O-rings from the lever shaft.
6.In the Roadranger valve, inspect the air fittings, and remove
if damaged.
37
Air System
How to Install a Roadranger Valve
Special Instructions
To position the Roadranger valve, the range lever must be to the front or the splitter button to the left when facing forward.
Special Tools
Typical service tools
Procedure -
1.Make sure the nut, valve cover, air lines, sheathing, and Orings are in position on the lever shaft.
2.If previously removed, replace the air fittings and torque to
84-120 lbs. in.
3.Place the Roadranger valve on the lever shaft and rotate so
the range selector faces the vehicle front.
Air System
4.From the Roadranger valve bottom, tighten the jam nut to
35-45 lbs. ft. of torque.
5.Connect the air lines to the air fittings.
6.Slide the cover into position on the Roadranger valve.
7.Install the Roadranger valve cover mounting screws.
Note: Make sure the air lines are seated fully.
38
Air System
How to Remove a Slave Valve
Special Instructions
WARNING
A sudden release of air pressure can injure you or damage equipment. To prevent injury or equipment damage, the vehicle air
tanks must be exhausted.
Special Tools
Typical service tools
Procedure -
1.Record or mark air line locations.
2.Remove all air lines.
Note: Remove three 1/4" ID air hoses at swivel fitting at
range cylinder location. Remove air line bracket at
rear of transmission. Remove slave valve with air
hoses still attached.
3.Remove the retaining capscrews around valve perimeter.
4.Remove slave valve and gasket.
5.From the transmission case, remove the sleeve, spring, and
plunger pin.
6.Inspect the air fittings, replace if damaged.
39
How to Install a Slave Valve
Special Instructions
None
Special Tools
Typical service tools
Procedure -
1.Clean gasket surface and install air fittings.
Air System
2.Lightly lubricate and install plunger pin, spring, and sleeve
into case.
3.Install any necessary air hoses at this time.
4.Install new gasket.
5.Apply Eaton/Fuller Sealant #71205 or equivalent to the
retaining capscrews.
6.Install the retaining capscrews. Tighten to 8-12 lbs. ft. of
torque.
Note: Make sure the retaining capscrews are properly
torqued.
Air System
40
In-Vehicle Service Procedure
How to Remove the Gear Shift Lever/Remote Shift Control
Special Instructions
The air lines must be disconnected from the transmission or from the Roadranger valve.
Different detent springs are available to increase or decrease shifting effort. Note and record specific locations for specific
springs. In some cases, a stiffer spring is installed in the top rail position.
Remote control housings are removed the same way as gear shift levers.
Special Tools
Typical service tools
Procedure -
2
1
1.From the gear shift lever base/shift control housing, remove
the four (4) retaining capscrews.
3
1. Housing
2. Capscrew
3. Gasket
2.To break the gasket seal, lightly jar the gear shift/shift control housing.
3.Remove the gear shift lever housing.
CAUTION
Make sure the detent springs do not fall into the transmission.
41
4.Remove detent springs as needed.
5.Remove the gasket and clean the area the replacement gasket will contact.
In-Vehicle Service Procedure
How to Install the Gear Shift Lever/Remote Shift Control
Special Instructions
Remote control housings are installed the same way as gear shift levers.
For standard and forward shift bar housings, make sure the detent springs and balls are in the shift bar housing top bores.
Make sure the shift block and yoke notches are aligned in the neutral position.
Special Tools
Typical service tools
Procedure -
1.Thoroughly clean mounting surface.
2.Position a new gear shift lever/shift control housing gasket
on the gear shift lever mounting surface.
3.Install the detent springs.
4.Install the shift lever/shift control housing. Make sure the
tip (finger) of the gear shift lever fits into the slots in the
shift block.
5.Apply Eaton/Fuller Sealant #71205 or equivalent to the
retaining capscrews.
In-Vehicle Service Procedure
2
1
6.Install the retaining capscrews, tighten to 35-45 lbs. ft. of
torque.
Note: Make sure the capscrews are properly torqued.
Note: Make sure you can shift the transmission.
3
1. Housing
2. Capscrew
3. Gasket
42
In-Vehicle Service Procedure
How to Adjust the Remote Shift Control (LRC Type)
Special Instructions
The following is a typical adjustment procedure for an LRC type slave control. It is recommended that the OEM Chassis Service
Manual be consulted first.
Special Tools
Typical service tools
Procedure -
D
B
A
6
1. Reach Rod
2. Turnbuckle
3. Selection Lever
4. Inner Shift Finger
2
Figure A
1
2
3
5
Figure B
1. Selection Lever
2. Shift Arm
4
7
5. Shift Arm
6. Pivot Link Assembly
7. Inner Shift Shaft
90
1.Move the gear shift lever forward or backward to the neutral
position.
2.Move the gear shift lever sideways, toward reverse, until
you feel resistance from the reverse plunger spring. DO
NOT shift to reverse. The shift finger must remain in this
position while you are making all the adjustments.
3.Remove the cotter pin, castle nut and ball joint A (see figure
A) from the selection lever. Do not remove the ball joint
from the pivot link.
4.Loosen the capscrew B (see figure A) and remove the shift
arm from the inner shift shaft. Do not disconnect the selection lever from the shift arm.
5.Turn the shift arm until it is at a right angle (90°) to the
selection lever as viewed from the side (see figure B).
Note: Ideally, the shift arm should be adjusted 90° to the
selection lever as described, but in some chassis
configurations it may be necessary to index the shift
arm in the vertical position. Indexing the shift lever is
done to prevent shift lever jump out. This type of
1
6.Install the shift arm on the splines of the inner shift shaft.
adjustment will cause an unequal amount of gear
shift lever travel between neutral and a forward lever
position as compared to neutral and a rearward lever
position.
You may have to move the shift arm 4° or 5° to align the
splines of the two parts. Disregard any movement of the
gear shift lever at this point. The gear shift lever will be
43
adjusted later.
7.Tighten the capscrew B (see figure A) on the shift arm.
8.Connect the pivot link assembly ball joint to the selection
lever. Secure it with the castle nut and cotter pin.
In-Vehicle Service Procedure
Figure C
9.Loosen the jam nuts C (see figure C) on the pivot link.
10. Check to be sure the inner shift finger is still in place.
11. Rotate the pivot link until the curved end of the selection
lever is parallel with the shift arm as viewed from the rear
(see figure C).
12. Tighten the pivot link jam nuts C (see figure C).
13. Loosen both capscrews on the turnbuckle D (see figure A).
14. Check to be sure inner shift finger is still in place.
15. Rotate the turnbuckle to obtain the proper forward-backward neutral position of the gear shift lever in the cab.
16. Tighten one turnbuckle D capscrew (see figure A).
17. Move the gear shift lever to the desired position.
18. Turn the second turnbuckle D capscrew.
19. Check for linkage obstructions in all gear positions.
1
2
4
5
1. Selection Lever
2. L.H. Thread
3. R.H. Thread
4. Shift Arm
5. Parallel
3
In-Vehicle Service Procedure
44
In-Vehicle Service Procedure
Neutral Switch Operation and Testing
Special Instructions
The neutral switch is a normally closed switch. An electrical current flows through it when the transmission shifter is in the neutral position. When the transmission shifter is in gear, the switch is open and no current flows through it. Likewise, the switch is
open when the ball is depressed. The switch is actuated by the air valve shaft.
Special Tools
Typical service tools
Volt/Ohm meter
Procedure -
1.Disconnect the wiring from the switch.
2.Connect an ohm meter to check for continuity or a small
reading.
3.Place the transmission shift lever in the neutral position.
The ohm meter should register continuity or a small reading. If it does, go to the next step. If it does not, remove the
switch and replace it.
4.Shift the transmission into all gear positions. The ohm
meter should read open or infinity. If it does not, remove
the switch. Then, depress the switch ball and check for continuity. The ohm meter should read open or infinity when
the ball is depressed.
5.Look into the neutral switch hole and verify that the air valve
shaft moves as the transmission is shifted from neutral into
gear.
•If it does, replace the switch.
•If not, remove the shift bar housing and check the air
valve and shift rails for excessive wear. Also, check the
slave valve plunger and spring for free movement.
45
How to Remove the Neutral Switch
Special Instructions
None
Special Tools
Typical service tools
Procedure -
1.Remove 2 screws retaining wire terminals.
In-Vehicle Service Procedure
2.Remove the switch using a 7/8" deep well socket or box end
wrench.
1. Neutral Light Switch
2. Gasket
3. Shift Bar Housing
4. Gasket
5. Air Valve Shaft
1
2
3
4
5
In-Vehicle Service Procedure
46
In-Vehicle Service Procedure
How to Install the Neutral Switch
Special Instructions
None
Special Tools
Typical service tools
Procedure -
1. Neutral Light Switch
2. Gasket
3. Shift Bar Housing
4. Gasket
5. Air Valve Shaft
1
2
1.Install a new gasket.
2.Install the neutral switch. Tighten it to 15-20 lbs. ft.
(20-27 N•m) of torque.
3
4
3.Connect the wiring to the switch.
5
47
In-Vehicle Service Procedure
Reverse Switch Operation and Testing
Special Instructions
The reverse switch is a normally open ball switch. When the transmission is shifted into reverse, a ramp on the reverse yoke bar
contacts and raises a pin. The pin depresses the ball on the switch, which closes the switch contact, allowing current to flow
through the switch and light up the vehicle's backup lights.
Special Tools
Typical service tools
Volt/Ohm meter
Procedure -
1.Disconnect the wiring from the switch.
2.Connect an ohm meter to check for continuity.
3.Place the transmission shift lever in any position except
reverse. If the switch is working properly, the ohm meter
should read open or infinity. If it is not, remove the switch
and recheck it for continuity. Replace as necessary.
4.Place the transmission shift lever in the reverse position. If
the switch is working properly, the ohm meter should register continuity, or a small reading. If it does not, remove the
switch and recheck it for continuity. Replace it as necessary. Also, check for sticking or excessive wear of the
reverse pin.
In-Vehicle Service Procedure
48
In-Vehicle Service Procedure
How to Remove the Reverse Switch
Special Instructions
None
Special Tools
Typical service tools
Procedure -
1. Reverse Light Switch
2. Gasket
3. Pin
4. Shift Bar Housing
5. Gasket
1
2
3
1.Remove 2 screws retaining wire terminals.
2.Remove the switch using a 7/8" deep well socket or box end
wrench.
4
5
49
How to Install the Reverse Switch
Special Instructions
None
Special Tools
Typical service tools
Procedure -
In-Vehicle Service Procedure
1.Insert the reverse pin in the reverse switch bore.
2.Install new gasket on switch.
3.Install the reverse switch. Tighten it to 15-20 lbs. ft.
(20-27 N•m) of torque.
4.Connect the wiring to the switch.
1. Reverse Light Switch
2. Gasket
3. Pin
4. Shift Bar Housing
5. Gasket
1
2
3
4
5
In-Vehicle Service Procedure
50
In-Vehicle Service Procedure
How to Remove the Output Yoke/Companion Flange and Nut
Special Instructions
You must remove the shift bar housing in order to lock the transmission.
For proper cleaning and maintenance, see TRSM0912 "Rear Seal Maintenance Guide".
After removal of the output yoke/companion flange, temporarily replace the output shaft nut to protect the output shaft threads
during auxiliary section disassembly.
Special Tools
See Tool Information.
A large breaker bar or air impact wrench
Procedure -
1.Engage two (2) mainshaft sliding clutches into two (2)
mainshaft gears to lock the transmission or use a yoke
holding tool if available.
2.Use a large breaker bar or air impact wrench to remove the
output shaft nut.
51
3.Remove the output yoke. Use the output yoke puller (Tool
ref. ID T1).
In-Vehicle Service Procedure
In-Vehicle Service Procedure
52
In-Vehicle Service Procedure
How to Install the Output Yoke/Companion Flange and Nut
Special Instructions
You must remove the shift bar housing in order to lock the transmission.
For proper cleaning and maintenance, see TCSM0912 Seal Maintenance Guide.
Special Tools
See Tool Information.
Torque wrench with 0-600 lbs. ft. capacity
Procedure -
1.Engage two (2) mainshaft sliding clutches into two (2)
mainshaft gears to lock the transmission, or use a yoke
holding tool if available.
2.Install the speedometer drive gear rotor or replacement
spacer on the output shaft inside the rear bearing cover.
3.If the slinger on the yoke is damaged, replace using a
Slinger/Seal kit.
4.Install the output yoke over the output shaft. The yoke
should slide on and stop before contacting the speedometer
rotor. As the output shaft nut is installed, the output yoke
will contact the speedometer rotor.
53
5.Install the output shaft nut, tighten to 450-500 lbs. ft. of
torque.
6.Make sure the output shaft nut is properly torqued and
unlock the transmission, or remove the yoke holding tool.
In-Vehicle Service Procedure
In-Vehicle Service Procedure
54
In-Vehicle Service Procedures
How to Remove the Output Yoke / Flange and Retaining Capscrews
Special Instructions
None
Special Tools
•Typical service tools
Procedure -
1.Remove drive shaft from transmission. Reference OEM
removal guidelines.
2.Remove the end yoke retaining capscrews and washer from
auxiliary mainshaft.
3.Remove the end yoke/flange.
55
In-Vehicle Service Procedures
How to Install the Output Yoke / Flange and Retaining Capscrews
Special Instructions
For proper cleaning and maintenance, see TCSM0912 Seal Maintenance Guide.
Special Tools
•Typical service tools
Procedure -
1.Install end yoke, retaining washer, and capscrews. Apply
Eaton/Fuller #71205 liquid thread sealant to capscrews and
then snug each capscrew to 35 lbs. ft. [47 N·m.]
2.Fully tighten both retaining capscrews to specified torque
rating 74-81 lbs. ft. [100-110 N·m.]
Auxiliary Section
Note: This fastening design employs Spiralock
conventional metric thread pitch tap cannot be used
for thread restoration on this product.
WARNING
Use only Eaton/Fuller #71205 liquid thread sealant or liquid
equivalent on the yoke retaining capscrews. Do not use any type
of thread locking tape on the end yoke retaining capscrews. This
may cause the capscrews threads to strip and cause the end yoke
to loosen.
3.Reinstall driveshaft per OEM guidelines.
TM
threads. A
56
In-Vehicle Service Procedure
How to Remove the Auxiliary Section with Tapered Bearings
Special Instructions
There can be different capscrew lengths, note their location.
Auxiliary sections can be removed either with the transmission in the horizontal position or the vertical position.
Auxiliary countershaft retaining straps may be installed to hold the countershafts in place. You can make retaining straps from 3"
x 1" bar stock. Auxiliary can be removed without straps, use caution.
Special Tools
See Tool Information.
Item T2: Auxiliary section hanger bracket for horizontal removal
A steel bar longer than the width of the output yoke for vertical removal
A hoist with a lifting chain
Auxiliary countershaft retaining straps
Procedure -
1.To remove the auxiliary section in the horizontal position:
Remove the four (4) capscrews and the auxiliary countershaft rear bearing cover, gasket, and rear bearing shim.
57
2.Install the auxiliary countershaft retaining straps with
2 - 3/8" NC x 1" and 1 - 3/8" NC x 1-1/2" clean capscrews.
Note: Do not use an air gun. Tighten by hand until the cap-
screws are snug.
In-Vehicle Service Procedure
In-Vehicle Service Procedure
3.From the auxiliary section housing, remove the retaining
capscrews that attach the front section to the auxiliary section.
4.Insert the two (2) longest capscrews in the housing flange
tapped holes. Tighten evenly to move the auxiliary section
away from the front box. Go far enough to break the gasket
seal.
5.Remove the capscrews from the tapped holes.
6.Attach an auxiliary section hanger bracket to the auxiliary
section top.
7.Attach a lifting chain to the auxiliary section hanger bracket.
8.Move assembly to the rear until auxiliary section is free.
9.Remove the gasket and clean all mounting surfaces of gasket material.
58
In-Vehicle Service Procedure
Procedure -
1.To remove the auxiliary section in the vertical position:
With blocks under the clutch housing to prevent input shaft
damage, place transmission in the vertical position, clutch
housing down.
2.Remove the four (4) capscrews and the auxiliary countershaft rear bearing cover, gasket, and rear bearing shim.
Clean the gasket surface area.
3.Install the auxiliary countershaft retaining straps with
2 - 3/8" NC x 1" and 1 - 3/8" NC x 2-1/2" clean capscrews.
Note: Do not use an air gun. Tighten by hand until the cap-
screws are snug.
4.From the auxiliary section housing, remove the retaining
capscrews that attach the front box to the auxiliary section.
5.Install a steel bar through the yoke.
6.Attach a lifting chain to the steel bar.
7.Lift assembly from the front section.
59
How to Install the Auxiliary Section in Chassis
Special Instructions
None
Special Tools
See Tool Information.
Item T3: Countershaft support tools
Item T14: Auxiliary section removal adapter plate
A hoist with lifting chain
Procedure -
In-Vehicle Service Procedure
1.Install the countershaft support tools on the auxiliary section countershafts to center and hold the countershafts in
position. Install a 3/8"-16 X 2-1/2" long capscrew into countershaft center.
2.If removed, slide the output yoke over the output shaft.
Lightly oil the threads and install the output nut on the output shaft. Torque the nut to 450-500 lbs. ft. (610-677 N•m).
Note: To prevent the output shaft from rotating while
installing the nut, place a clean shop rag in the gear
mesh.
Note: Due to chassis interference, it may not be possible to
install the yoke at this step. However, the output
shaft must be drawn fully into position to prevent it
from sagging when the auxiliary section is installed
in the chassis. If the chassis causes interference, the
yoke can be temporarily installed to draw up the output shaft and then removed before the auxiliary section is installed.
3.Use crocus cloth or a wire wheel to clean rust and paint
from the dowel pins before installing them.
In-Vehicle Service Procedure
CAUTION: If the dowel pins are not installed in the
main case to the proper depth, the auxiliary section
will not properly align with the main case and bearing or synchronizer failure may occur.
60
In-Vehicle Service Procedure
4.Install the dowel pins into the main case so that 3/8"-1/2" of
the shoulder is exposed or pin is flush with front of case
ear.
5.Clean all rust and paint from the dowel pin holes in the auxiliary section housing, and lightly grease the dowel pins on
the main case and the dowel pin holes on the auxiliary section housing.
6.Make sure the auxiliary section is in low range. If not, blow
shop air (max 100 PSI) into the low range supply port to
shift the range synchronizer to low. If necessary, make sure
the deep reduction clutch is engaged into gear.
7.Position the gasket onto the main case mounting surface.
8.Mount the auxiliary section on the lifting device or jack.
9.Tighten the center capscrew on the countershaft support
tools to draw the countershafts into a level position. Do not
overtighten the capscrews. The output yoke and shaft must
be able to rotate.
10. Position the auxiliary section in line with the main case, and
slide the housing onto the dowel pins. Mesh the countershafts with the auxiliary drive gear. Rotate the output yoke
and shaft slightly to help the gears mesh and slide the auxiliary section forward until it is flush with the main section.
CAUTION: The auxiliary section should slide into
place fairly easily. DO NOT force it on or pull it into
place with the capscrews. Excessive force may
damage the transmission. If excessive force is necessary, the gearing is likely out of time.
11. If the auxiliary section does not install fully, slide it back and
check the following:
a. The output yoke and nut should be installed to pull
back and center the auxiliary mainshaft assembly.
b. The countershaft support tool center capscrew
should be snug to level the countershafts.
c. The dowel pins and auxiliary housing mating holes
should be clean and well oiled.
d. The internal gearing on the auxiliary section must
have been properly timed during reassembly.
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12. Apply Eaton® Fuller® thread sealant #71205 or equivalent
to the all the retaining capscrew threads. Install the capscrews to secure the auxiliary section to the main case.
Torque the capscrews to 40-45 lbs. ft. (54-61 N•m).
13. If the countershaft, countershaft bearings, or auxiliary
housing have been replaced, or if the countershafts, bearings, or shims were not marked and reassembled in the
same location, the bearing endplay must be checked and
set by shimming. Shim the countershaft bearings using
“Shim Procedure Without a Shim Tool for Tapered Bearings” on page 171.
14. If shimming is not required, remove the support tools, and
install the proper shim, gasket, and countershaft bearing
cover. Secure the bearing covers with the capscrews. Install
sealer. Tighten the capscrews to 40-45 lbs. ft. (54-61 N•m).
15. Connect all removed air hoses and lines. Use Eaton®
Fuller® thread sealant #71205 or equivalent as necessary.
16. Connect the driveshaft and U-joint, and refill the transmission with the recommended lubricant. For lubrication
instructions refer to "Lubrication."
In-Vehicle Service Procedure
In-Vehicle Service Procedure
62
Bench Service Procedure
How to Disassemble the Gear Shift Lever
Special Instructions
If total disassembly is needed, the Roadranger valve, must be removed first.
Release the spring one coil at a time.
Special Tools
Vise with brass jaws or wood blocks
3
4
2
2
1
4
5
6
8
7
9
1. Pin8. Capscrew
10
11
12
13
14
2. Bushing9. Gasket
3. Upper Lever10. O-ring
4. Snap Ring11. Washer
5. Rubber Boot12. Lower Lever
6. Spade Pin13. Stepped Washer
7. Housing14. Tension Spring
63
Procedure -
1.On a non-isolated shift lever, remove the Roadranger valve
using the “How to Remove a Roadranger Valve” on
page 37. If the shift lever is equipped with a lever isolator,
remove the snap ring, bushing, and cross pin to disconnect
and remove the upper lever.
2.Slide the rubber boot up and off the shift lever shaft.
3.With housing bottom facing up, secure the assembly in a
vise.
4.Use large screwdriver to twist between the spring and
housing, forcing the spring from under the housing lugs
one coil at a time.
5.From inside the housing tower, remove the tension spring,
washer, and gear shift lever.
Bench Service Procedure
6.In models so equipped, from the housing bore, remove the
nut and washer.
7.From the housing tower spade pin bore, remove and
inspect the spade pin, discard if damaged.
8.From the housing tower inside groove, inspect the O-ring,
discard if damaged.
Bench Service Procedure
64
Bench Service Procedure
How to Assemble the Gear Shift Lever
Special Instructions
Inspect tension spring and washer for wear.
Apply Eaton rust preventative lubricant #71212 or equivalent to the shift lever pivot ball. A rust preventative lubricant film should
cover all surfaces between and including the pivot ball.
Seat the tension spring one coil at a time.
Special Tools
Vise with brass jaws or wood blocks
Item T4: Tension Spring Driver
3
4
2
2
1
4
5
6
8
7
9
1. Pin8. Capscrew
2. Bushing9. Gasket
10
11
12
13
14
3. Upper Lever10. O-ring
4. Snap Ring11. Washer
5. Rubber Boot12. Lower Lever
6. Spade Pin13. Stepped Washer
7. Housing14. Tension Spring
65
Procedure -
1.With housing bottom facing up, secure the assembly in a
vise.
2.If the spade pin is damaged, replace and install the spade
pin, in housing tower bore.
3.In models so equipped, install the nut and washer in the
housing bore.
4.If the O-ring is damaged, replace; lubricate the O-ring with
Eaton/Fuller lubricant #71206 or equivalent. Install the Oring in the housing tower inside groove.
5.Align the lever ball slot with the spade pin and position the
gear shift lever in the housing tower.
Bench Service Procedure
6.With dished-side up, install the washer over the ball.
7.Use a tension spring driver to install the tension spring
under the housing lugs.
8.Remove the assembly from the vise.
9.Install a rubber boot over the gear shift lever and against
the housing.
Note: Make sure the gear shift lever can move.
Bench Service Procedure
66
Bench Service Procedure
How to Remove the Shift Bar Housing
Special Instructions
Before removing the shift bar housing, the air lines must be disconnected.
For models equipped with an oil pump and/or cooler assemblies, make sure to disconnect the oil line connected to the shift bar
housing.
There are three (3) sizes of capscrews. The 1 1/2" capscrews are used with the lifting eyes. The 1 1/4" are used on all other locations except the left front corner at the roll pin location. This capscrew is 1 3/4".
Be careful when removing the shift bar housing to prevent damaging the oil tube with the shift yokes.
Special Tools
Typical service tools
Procedure -
1.From the shift bar housing, remove the two retaining capscrews securing the oil cooler. Remove oil cooler and set
aside.
2.Remove slave valve.
67
3.Remove interlock parts (pin, spring, and sleeve).
4.From the shift bar housing rim, remove the retaining capscrews.
Bench Service Procedure
5.To break the gasket seal, jar the shift bar housing.
6.Remove the shift bar housing.
7.Inspect the roll pin, replace if damaged.
8.Remove the gasket and clean all mounting surfaces of gasket material.
9.If the three (3) sets of tension springs and balls from the
housing top bores are loose, tilt the assembly and remove
them.
Bench Service Procedure
68
Bench Service Procedure
How to Install the Shift Bar Housing
Special Instructions
There are three (3) sizes of capscrews. The 1-1/2" capscrews are used with the lifting eyes. The 1-1/4" are used on all other locations except the left front corner at the roll pin location. This capscrew is 1-3/4".
Be careful when removing the shift bar housing to prevent damaging the oil tube with the shift yokes.
The slave valve and interlock parts must be removed prior to installing the shift bar housing.
Special Tools
Typical service tools
Procedure -
1.Place the shift bar housing and shift blocks in the neutral
position
2.Place the mainshaft sliding clutches in the neutral position.
3.Position a new shift bar housing gasket on the shift bar
housing mounting surface.
Note: The slave valve and interlock assembly must remain
off, until the shift bar housing is installed, to avoid
damaging the interlock pin.
4.As you install the shift bar housing make sure the yokes fit
into the corresponding sliding clutch slots and the housing
aligns with the roll pin.
5.Apply Eaton/Fuller Sealant #71205 or equivalent to the
retaining capscrews.
69
6.Install interlock parts (pin, spring and sleeve).
7.Install slave valve and tighten to specifications.
Bench Service Procedure
Bench Service Procedure
70
Bench Service Procedure
How to Disassemble the Shift Bar Housing
Special Instructions
To aid in assembly, mark the location and orientation of all shift yokes and blocks.
Procedure -
1.If installed, remove the oil trough capscrews and oil trough.
2.If present, cut and remove the lockwire on the yoke lockscrews. Remove the yoke lock screws. Slide the yoke bar
from the bore.
Note: The remaining yoke bars must be in the neutral posi-
tion so that yoke bars will slide out freely.
3.Remove all yoke lockscrews, yoke bars, yokes, and shift
blocks.
71
4.Remove the two 3/4" interlock balls.
5.Remove the air valve shaft.
Bench Service Procedure
6.For the reverse yoke, unscrew the plug to remove the
spring and plunger.
7.If equipped with a yoke activator (x-actuator configuration),
remove the nut or snap ring (depending on version) and
remove yoke activator.
Note: On version with snap ring, do not remove pivot pin if
parts will not be replaced.
Bench Service Procedure
72
Bench Service Procedure
How to Assemble the Shift Bar Housing
Procedure -
1.Install the plunger in the 1st & reverse shift yoke bore,
plunger shank to the outside.
2.Install the spring into the bore over the plunger shank.
3.Install the plug and tighten to compress the spring.
73
4.After plug bottoms out, back the plug out 1 - 1-1/2 turns.
5.Complete the block assembly process by staking the plug
through the small hole in block.
CAUTION: Overtorquing of lockscrew can result in
distortion and binding of yoke bar. Make sure yoke
bar has free movement. Lockwire lockscrew.
6.Install the reverse yoke bar, reverse yoke and direct/overdrive yoke (on x-actuator versions). The yoke bar neutral
notches must be positioned in line with the detent ball
bores. Start the lockscrews by hand to assure proper
engagement of the cone into the yoke bar hole. Torque the
lockscrews to 35-45 lbs. ft.
Bench Service Procedure
7.Install air valve shaft.
Bench Service Procedure
74
Bench Service Procedure
8.Install one 3/4" interlock ball.
9.Insert small pin into middle yoke bar.
Note: The yoke bar and pin must be kept in line with the
interlock ball bore. If the yoke bar is rotated, the pin
can slide out and bind in the detent ball bore. Slide
yoke bar through shift block and yoke while installing
bar into center housing bore. Start the lockscrews by
hand to assure proper engagement of the cone into
the yoke bar hole. Torque the lockscrews to 3545 lbs. ft.
CAUTION: Overtorquing of lockscrew can result in
distortion and binding of yoke bar. Make sure yoke
bar has free movement. Lockwire lockscrew.
10. Install the 2nd 3/4" interlock ball.
11. Install the third yoke bar into the housing. Slide through the
remaining shift block and shift yoke. Start the lockscrews
by hand to assure proper engagement of the cone into the
yoke bar hole. Torque the lockscrews to 35-45 lbs. ft.
CAUTION: Overtorquing of lockscrew can result in
distortion and binding of yoke bar. Make sure yoke
bar has free movement. Lockwire lockscrew.
75
12. Install the oil trough and oil trough capscrews. Torque the
lockscrews to 8-12 lbs. ft. If applicable, lockwire the
screws. If lockwire holes are not present, clean threads and
use a thread locking compound to retain the capscrews.
13. Insert reverse switch pin. Install gasket and reverse light
switch or plug. Torque to 15-20 lbs. ft.
14. Install gasket and neutral switch or plug. Torque to
15-20 lbs. ft.
15. If used, install breather.
16. Install the three (3) detent balls, one in each housing top
bore.
Bench Service Procedure
17. Install the three (3) detent springs, one over each detent
ball.
Bench Service Procedure
76
Bench Service Procedure
How to Remove the Auxiliary Section with Tapered Bearings
Special Instructions
There can be different capscrew lengths, note their location.
Auxiliary sections can be removed either with the transmission in the horizontal position or the vertical position.
Auxiliary countershaft retaining straps may be installed to hold the countershafts in place. You can make retaining straps from 3"
x 1" bar stock. Auxiliary can be removed without straps, use caution.
Special Tools
See ’Tool Information’.
Item T2: Auxiliary section hanger bracket for horizontal removal
A steel bar longer than the width of the output yoke for vertical removal
A hoist with a lifting chain
Auxiliary countershaft retaining straps
Procedure -
1.To remove the auxiliary section in the horizontal position:
Remove the four (4) capscrews and the auxiliary countershaft rear bearing cover, gasket, and rear bearing shim.
77
2.Install the auxiliary countershaft retaining straps with
2 - 3/8" NC x 1" and 1 - 3/8" NC x 1 - 1/2" clean capscrews.
Note: Do not use an air gun. Tighten by hand until the cap-
screws are snug.
Bench Service Procedure
3.From the auxiliary section housing, remove the retaining
capscrews that attach the front section to the auxiliary section.
4.Insert the two (2) longest capscrews in the housing flange
tapped holes. Tighten evenly to move the auxiliary section
away from the front box. Go far enough to break the gasket
seal.
5.Remove the capscrews from the tapped holes.
6.Attach an auxiliary section hanger bracket to the auxiliary
section top.
7.Attach a lifting chain to the auxiliary section hanger bracket.
Bench Service Procedure
8.Move assembly to the rear until auxiliary section is free.
9.Remove the gasket and clean all mounting surfaces of gasket material.
78
Bench Service Procedure
Procedure -
1.To remove the auxiliary section in the vertical position:
With blocks under the clutch housing to prevent input shaft
damage, place transmission in the vertical position, clutch
housing down.
2.Remove the four (4) capscrews and the auxiliary countershaft rear bearing cover, gasket, and rear bearing shim.
Clean the gasket surface area.
3.Install the auxiliary countershaft retaining straps with 2 - 3/
8" NC x 1" and 1 - 3/8" NC x 2 - 1/2" clean capscrews.
Note: Do not use an air gun. Tighten by hand until the cap-
screws are snug.
4.From the auxiliary section housing, remove the retaining
capscrews that attach the front box to the auxiliary section.
5.Install a steel bar through the yoke.
6.Attach a lifting chain to the steel bar.
7.Lift assembly from the front section.
79
How to Disassemble the Range Cylinder Assembly
Procedure -
1.From the range cylinder cover, remove the capscrews,
cover, and gasket.
2.Clean the gasket mounting surfaces of all gasket material.
3.From the range cylinder housing bore, remove the 15/16"
nut.
Bench Service Procedure
4.Remove 3/4" bolts from range yoke.
Bench Service Procedure
80
Bench Service Procedure
5.Pull range shaft out of cylinder and remove range yoke from
synchronizer.
6.From the cylinder housing bore, remove the range piston.
7.Inspect the range piston O-rings, remove if damaged.
81
8.From the range cylinder housing, remove the housing and
gasket.
9.Clean the gasket mounting surfaces of all gasket material.
10. Inspect the O-ring inside the range cylinder housing bore,
remove if damaged.
Bench Service Procedure
Bench Service Procedure
82
Bench Service Procedure
How to Remove the Auxiliary Countershaft Assembly
Special Instructions
For ease of disassembly, mount the auxiliary section upright in a vise.
Both countershafts are removed the same.
As the countershaft strap is removed, the countershaft can fall.
Special Tools
See “Tool Information”.
Vise with brass jaws or wood blocks
Item T11: Bearing Puller
Soft bar and maul
83
Procedure -
1.To hold the auxiliary countershafts from turning, place a
shop rag or equivalent between the splitter gear and one
countershaft.
2.From the output shaft, loosen the 15/16" capscrew and
retainer. Do not remove the capscrew.
3.Install countershaft retaining strap.
4.Use a soft bar and maul to drive the output shaft forward far
enough to partially unseat the bearing.
Bench Service Procedure
5.Support the auxiliary countershaft while removing the auxiliary countershaft retaining strap.
6.Remove the auxiliary countershaft.
7.Remove the auxiliary countershaft bearing race from bore.
Bench Service Procedure
84
Bench Service Procedure
8.If necessary, secure the countershaft assemblies in a vise
and remove both the front and rear bearings with a bearing
separator and jaw pullers.
85
Bench Service Procedure
How to Disassemble the Synchronizer Assembly
Special Instructions
Place the synchronizer assembly on a clean, flat surface. Cover the synchronizer assembly with a shop rag to prevent losing the
three (3) springs under pressure from the HI range synchronizer pin locations.
Special Tools
Typical service tools
4
1
2
3
1. Spring
2. Synchronizer Hi
3. Sliding Clutch
4. Synchronizer Lo
Procedure -
1.Place the larger LO range synchronizer ring on the bench.
2.Cover the synchronizer with a shop rag to contain the
springs.
3.Grab both sides of the HI range synchronizer and pull.
4.From the synchronizer ring LO range pins, remove the sliding clutch.
Bench Service Procedure
86
Bench Service Procedure
How to Disassemble the Output Shaft Assembly
Special Instructions
When using the soft bar and maul on the output shaft, be careful not to damage the threads.
When removing the rear bearing cover, the rear bearing cone drops from the housing bore.
1.Use a soft bar and maul to drive the output shaft forward
and through the rear bearing assembly.
2.From the auxiliary housing rear, remove the rear bearing
retaining capscrews, cover, and gasket.
3.Clean the gasket mounting surface of gasket material.
4.Inspect the rear bearing cover oil seal for damage, remove
if damaged.
89
5.From the auxiliary housing rear, remove the bearing cup
and spacer.
6.From the auxiliary housing front, remove the remaining
bearing cup.
Bench Service Procedure
7.Some models have a one piece bearing race. Remove it
from the bearing bore.
Bench Service Procedure
90
Bench Service Procedure
8.From the output shaft, remove the bearing inner spacer.
9.Use the output shaft assemble gear front face as a base,
press the output shaft through the bearing and gear.
91
Bench Service Procedure
How to Assemble the Output Shaft Assembly
Special Instructions
Make sure the magnetic plugs are installed in the auxiliary housing.
Output shaft stack up should be done on a clean, flat surface.
When heating the bearings, do not heat above 275°F (136°C).
When installing the rear bearing race, the proper depth is when the race shoulder is seated on bearing bore top.
Because the collar becomes distorted when compressed, do not use an old nylon collar in the rear bearing cover.
Special Tools
See "Tool Information."
Toolmaker’s dye
Heat lamp or hot plate and oil
Oil seal installation tool
Procedure -
1.Use toolmaker's dye and mark the LO range gear for timing
purposes.
2.Mark any two (2) adjacent teeth on the LO range gear.
Repeat the procedure for the two (2) adjacent teeth directly
opposite the first set marked.
Bench Service Procedure
92
Bench Service Procedure
3.With splined washer facing up, place the washer on the output shaft shoulder.
4.With LO range gear clutching teeth down, position LO range
gear on the output shaft, engage the washer splines.
5.With chamfer side up, position the LO range gear rear
washer on the output shaft against the LO range gear.
6.With tapered side up, use heat or appropriate driver and
install the output shaft rear bearing.
7.On the output shaft, position the bearing inner spacer. Set
aside.
8.Lay the auxiliary housing front face down on a clean flat
surface. Install the bearing race in the bearing bore.
93
Bench Service Procedure
How to Assemble the Synchronizer Assembly
Special Instructions
Assembly should be done on a clean, flat surface slightly lower than your waist.
Pins on the LO range synchronizer must line up with the chamfered holes on the sliding clutch bottom.
When compressing the HI range synchronizer springs cover with a shop rag. In the event compression is not achieved the first
time, this prevents the springs from leaving the bench area.
Special Tools
Typical service tools
4
1
2
3
1. Spring
2. Synchronizer Hi
3. Sliding Clutch
4. Synchronizer Lo
Procedure -
1.On the bench place the larger LO range synchronizer ring
face down with pins up.
2.With the sliding clutch recessed side up, place the sliding
clutch on the LO range synchronizer pins.
Bench Service Procedure
94
Bench Service Procedure
3.In the HI range synchronizer bores, install the three (3)
springs.
4.Place the HI range synchronizer ring over the LO range synchronizer ring. Rotate the HI range synchronizer until the
springs are seated against the pins.
5.Cover the assembly with a shop rag.
6.Apply downward pressure to the HI range synchronizer ring
while twisting counterclockwise. This compresses the
springs to fully seat HI range on the LO range synchronizer.
This should be done with a rapid twist and push motion.
Note: Make sure there are three springs and they are fully
compressed.
Note: Make sure you can move the sliding clutch from HI to
LO range and back.
95
How to Install the Oil Seal
Special Tools
See Tool Information Eaton Aftermarket Tools for part numbers.
Oil seal driver
Oil seal slinger driver
Procedure -
1.Install the seal into the rear bearing cover using the proper
seal driver. The seal is fully installed when the flange on the
seal is flush with the shoulder in the bore.
Bench Service Procedure
2.Install a new slinger on the seal sleeve or output yoke using
a slinger driver.
Note: Some versions use a sealing ring which is pressed
into a groove on the seal sleeve rear. Make sure this
seal is in place on this design level.
Bench Service Procedure
96
Bench Service Procedure
How to Assemble the Range Cylinder Assembly
Special Instructions
Apply Eaton lubricant #71214 or equivalent to shift cylinder assembly and insert valve O-rings so a film covers the entire surface
of each O-ring.
Procedure -
1.If previously removed, in the cylinder housing bore, install
the small O-ring.
2.If previously removed, on the piston I.D. and O.D., install
the piston O-rings.
3.Position a new gasket on the range cylinder housing
mounting surface.
4. Install the cylinder housing.
5.Apply Eaton/Fuller sealant #71205 or equivalent to the
retaining capscrews.
6.Install the capscrews, tighten to 20-25 lbs. ft. of torque.
97
7.Lean auxiliary section back with range cylinder upward.
8.Insert the piston. Push it in as far as it will go.
9.Slide range bar through the cylinder and yoke, aligning
grooves on range bar with bolt holes in range yoke.
Bench Service Procedure
10. Apply Eaton Fuller sealant #71205 or equivalent to range
yoke bolts. Install bolts and torque to 50-65 lbs. ft. of
torque.
11. Secure the piston with the retaining nut, tighten to
70-85 lbs. ft. of torque.
12. Position a new gasket on the cylinder housing cover mounting surface.
Bench Service Procedure
98
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