BRADEN CH400B Installation Maintenance And Service Manual page 23

DISASSEMBLY
The hoist drive weighs 565 pounds (256 kg). Ensure
the hoist and rigging are rated for this weight. Using
a hoist or rigging with insufficient rating may result in
personal injury or death.
1. Set the hoist drive assembly on a work bench rated
for the weight of the drive. Position the hoist drive so
the motor side is down. For SAE C motor flange units,
place spacer blocks under the brake cylinder so the
sprag clutch inner race does not hit the work bench.
2. Remove the capscrews (12) and lockwashers (14)
which secure the cover (5) to the ring gear (65) and
remove the cover.
3. Remove the thrust button (1) and the thrust washer
(4). Remove the primary planet carrier assembly and
primary sun gear (2) and the gear shaft (63).
4. Remove the intermediate sun gear (3) and the inter-
mediate planet carrier assembly (300).
5. Remove the final sun gear (64) and the final planet
carrier assembly (400).
6. Remove the retaining ring (36) which retains the brake
cylinder to the bearing carrier (61).
7. Place 5/16 NC eyebolts 180 degrees apart in the ring
gear tapped holes and carefully lift the ring gear off of
the brake cylinder. Lift straight up using an overhead
hoist and rigging connected to the eyebolts in the ring
gear.
8. If the bearing carrier (61) is to be removed from the
ring gear (65), remove the capscrews (24) and lock-
washers (23) which secure the bearing carrier (61) to
the ring gear (65). Remove O-ring (39).
9. Support the brake cylinder assembly and lightly tap
the overrunning clutch inner race with a soft mallet to
unseat from the bearing (58) and remove overrunning
clutch from the brake cylinder. For overrunning clutch
service, refer to Overrunning Clutch Service section of
this manual.
10. Remove retaining ring (60) from the bearing carrier
and remove the bearing carrier seal (33). Remove the
bearing (35) from the bearing carrier (61) and inspect
the bearing for signs of irregular wear and ensure the
bearing rollers rotating smoothly. Inspect the bearing
carrier surfaces as described below.
11. Refer to planet carrier, overrunning clutch, and brake
cylinder disassembly procedures for further disassem-
bly of components.
23
SAE D Motor Adapter