REPLACEMENT OF PARTS
A DODGE TORQUE-ARM Speed Reducer can be dis-
assembled and reassembled by careful attention to the
instructions following, using tools normally found in a
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 factory service.
The oil seals are of the rubbing type and considerable care
should be used during disassembly and reassembly to
avoid damage to the surface on which the seals rub. 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 reassembly. Also be careful to
remove any burrs or nicks on surfaces of the input shaft or
output hub before disassembly or reassembly.
When ordering parts for reducer, specify reducer size
number, reducer serial number, part name, part number
It is strongly recommended that when a pinion or gear is
replaced, the mating gear or pinion be replaced also.
If the large gear on the output hub must be replaced, it is
recommended that an output hub assembly with a gear
assembled on the 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 shaft oil seals the smooth surface of the
output hub must not be damaged.
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
Because old shaft oil seals may be damaged in
disassembly it is advisable to order replacements for these
If replacing a bearing or a shaft, it is advisable to order a
set of shims for adjustment of bearings on the shaft
If replacing a housing, a set of shims should be ordered
for each shaft assembly because the adjustment of the
bearings on each shaft assembly is affected.
REMOVING REDUCER FROM SHAFT:
unexpectedly started, turn oft and lock
proceeding. Failure to observe these
precautions could result in bodily
External loads may cause machine
movement. Block machine before
removing any drive train components.
Failure to observe these precautions
could result in bodily injury.
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.
1. Remove bushing screws.
2. 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.
3. Remove the outside bushing, the reducer and then the
1. Remove all bolts from housing. Drive back hollow
dowel pins on either side of housing. Remove back-up
plates and snap rings on the output hub on taper-
bushed reducers. Open housing evenly to prevent
damage to parts inside.
2. Lift shaft, gear and bearing assemblies from housing.
3. Remove seals, seal carriers and bearing cups from
1. Output Hub Assembly: Heat gear to 3250 to 350°F for
shrinking onto output hub. Heat bearing cones to 250°
to 270°F for shrinking onto output hub.
2. Countershaft Assembly: Heat gear to 325° to 350°F
and bearing cones to 250° to 270°F for shrinking onto
3. Input Shaft Assembly: Shaft and pinion are integral.
Heat bearing cones to 2500 to 270°F for shrinking onto
4. Drive the dowel pins back into position in the right-hand
5. Install countershaft cover in right-hand housing half.
Place housing half on blocks to allow for protruding end
of output hub. Install bearing cups in right-hand
housing half making sure they are properly seated.
6. Mesh output hub gear and small countershaft gear
together and set in place in housing. Set input shaft
assembly in place in the housing. Make sure bearing
rollers (cones) are properly seated in their cups. Set
bearing cups for left-hand housing half in place on their
(page 3 - 1284)