37-1-614 Page 37
FIGURE 6-5 – ADAPTOR PLATE
3. Place the unit in a horizontal position, on a solid blocking, so the gear end bearing carrier hangs
free. Drain oil from both carriers. At the gear end remove the cover, hub retainer plate, gear (slip
fit on hub) and pinion locknut. A spanner wrench similar to that shown in (FIGURE 6-3, page 36),
should be made to prevent damaging the locknut. This wrench is especially useful at assembly
in saving time, and more important, assures proper tightening of the nuts.
4. Mount the bearing press plate and puller (FIGURE 6-4, page 36), and pull the pinion. Be sure to
use a shaft protector to prevent damage to the end of the shaft. Remove the key from the shaft.
5. Mount the adaptor plate and puller (FIGURE 6-5), and pull the gear hub. Use a shaft protector.
Remove the key from the shaft.
6. If a hydraulic puller is not available, the hub and pinion may be pulled as shown in (FIGURE 6-6).
Do not use a torch to heat the pinion to aid in removal. The pinion can be damaged by
concentrated heat.
7. Remove all gear end bearing carrier to housing screws. With four jack screws in tapped holes in
the carrier flange, (FIGURE 6-7, page 38), pull the carrier. This also pulls bearings from the rotor
shaft. Tighten jack screws evenly to prevent binding carrier on dowel pins and bearings. Support
the carrier so it does not drop and damage shaft extensions. When the carrier is free, remove the
bearing retainers, bearings, lip type oil seal and shaft seal. If the bearings are to be used, handle
with care.
PINION
GEAR
HUB
O.D. B.C. Holes
Stud
O.D. B.C. Holes
Stud
5-3/4”
4-1/2”
(3) 9/16”
1/2” – 13” UNC
6”
4-3/4”
(5) 9/16”
1/2” – 13” UNC
FIGURE 6-6 – ALTERNATE ADAPTOR PLATES
