Using tools normally found In a maintenance department,
a Dodge Torque-Arm Speed Reducer can be disassembled
and reassembled by careful attention to the instructions
Cleanliness Is very important to prevent the introduction of
dirt into the bearings and other parts of the reducer. A tank of
clean solvent, an arbor press, and equipment for heating
bearings and gears, should be available for shrinking these
parts on shafts.
Our factory Is prepared to repair reducers for customers
who do not have proper facilities or who for any reason desire
The oil seals are of the rubbing type and considerable
care should be exercised during disassembly and re-assembly
to avoid damage to surfaces which the seals rub on.
The keyseat In the input shaft as well as any sharp edges
on the output hub should be covered with tape or paper before
disassembly or re-assembly. Also be careful to remove any
burrs or nicks on surfaces of the input shaft or output hub
before disassembly or re-assembly.
When ordering parts for reducer specify reducer size
number, reducer serial number, part name, part number and
It Is strongly recommended that when a pinion or gear is
replaced, the mating gear or pinion also be replaced if the
large gear on the output hub must be replaced, it is
recommended that an output hub assembly of a gear
assembled on a hub be ordered to secure undamaged
surfaces on the output hub where the oil seals rub. However, if
It is desired to use the old output hub, press the gear and
bearing off and examine the rubbing surface under the oil seal
carefully for possible scratching or other damage resulting
from the pressing operation. To prevent oil leakage at the oil
seals, the smooth surface of the output hub must not be
If any parts must be pressed from a shaft or from the
output hub, this should be done before ordering parts to make
sure that none of the bearings or other parts are damaged in
removal Do not press against outer race of any bearing.
Because old shaft oil seals may be damaged In
disassembly it is advisable to order replacements for these
REMOVING REDUCER FROM SHAFT:
WARNING: Remove all external loads from drive
before removing or servicing drive or accessories
To ensure that drive Is not unexpectedly started, turn
off and lock out or tag power source before proceeding.
Failure to observe these precautions could result in
Loosen screws In both output hub collars. Remove the
collar next to end of shaft. This exposes three puller holes in
output hub to permit use of wheel puller. In removing reducer
from shaft be careful not to damage ends of hub.
Remove bushing screws
Place the screws in the threaded holes provided in the
bushing flanges Tighten the screws alternately and evenly until
the bushings are free on the shaft For ease of tightening
screws make sure screw threads and threaded holes in
bushing flanges are clean.
Remove the outside bushing, the reducer and then the
Remove retaining rings from output hub Remove bushing
Remove all bolts from housing Open housing evenly to
prevent damage to parts inside.
Lift shaft, gear, and bearing assemblies from housing.
Remove seals, bearing covers, seal carriers, backstop
carrier and bearing cups from housing.
1. Output Hub Assembly: Heat gear to 325°F to 350°F to
shrink onto hub. Heat bearing cones to 270°F to 290°F to
shrink onto hub. Any Injury to the hub surfaces where the oil
seals rub will cause leakage, making it necessary to use a new
Countershaft Assembly: Heat gear to 325°F to 350°F and
bearing cones to 270°F to 290°F to shrink on shaft.
Input Shaft Assembly: Heat bearing cones to 270°F to
290°F to shrink on shaft.
Place a 010" shim on output hub seal carrier, counter-
shaft cover and backstop carrier for right hand half of housing
(as viewed in drawing). Place a 1/8" dia. bead of Dow Corning
RTV732 sealant on the face around the I D of the shim (seal Is
to be between reducer housing and shim). Install right-hand
carriers and cover in housing half and torque screws to torque
values in Table 3 Place bearing cups in right-hand housing
half. Make certain the cups are properly seated In housing and
are pressed against carriers and cover. Place housing half on
blocks to allow for protruding end of output hub.
CAUTION: If too much sealant is used It will run into
bearing and too little sealant will result in an Ineffective
Mesh output hub assembly and countershaft assemblies
together and place in housing half Place input shaft assembly
In housing half Tap lightly with a soft hammer (rawhide not a
lead hammer) until bearings are properly seated In the