Gear Reduction Unit.
Position the gear reduction unit into the center
Apply Loctite to the outer bearing race. Press
housing. Install the O-ring and the drum end. Apply
the bearing (if the bearing was removed during dis-
Loctite to the capscrew threads. Install the capscrews
assembly), into the right drum end.
and torque 27 to 29 foot-pounds (3.8 to 4.0 kgm).
Install the gasket and the bearing retainer. Ap-
Install the spacer on the main shaft.
ply Loctite to the capscrew threads and install the
capscrews. Torque 44 to 48 foot-pounds (6.1 to 6.7
Install the O-ring in the right end cover.
Position the right end cover in place on the cen-
Install the seal in the bearing retainer.
ter housing. Apply Loctite on the capscrew threads.
Install the washers and capscrews and torque the
Install the hub through the seal and bearing in
capscrews 81 to 88 foot-pounds (11.2 to 12.2 kgm).
the right drum end.
Apply loctite to the capscrews; install the
Install the seals in the hub.
capscrews securing the hub to the right end cover.
Torque 110 to 120 foot-pounds (1 5.2 to 16.6 kgm).
Install the main shaft and bearing into the hub;
secure with the snap ring.
Install the dowel pins through the right end
cover and hub. Install the dowel pins flush with the
Invert the hub and drum end and press the
right end cover.
spacer into position on the hub.
Install the input shaft, O-ring, and coupling.
Position the hub snap ring in place in the secon-
dary reduction assembly.
Assemble the secondary reduction assembly
In the older Model 15 Hoist, there is a
over the hub splines, expand the snap ring and seat
drum support bearing cage which
the snap ring in the hub groove after the reduction
houses the roller bearing and seal. In
assembly is in position on the hub splines.
the newer Model 15 Hoist, the drum
support bearing cage is not used. For
10. Position the ring gear over the secondary reduc-
the older Model 15 Hoist continue with
tion assembly and against the drum end face.
step 9. For the newer Model 15 Hoist
skip to step 12 and continue.
11. Position the primary reduction assembly into
the ring gear and secondary carrier.
Press the bearing into the drum support bear-
ing cage. Apply Loctite on the seal and install it in the
12. Position the sun gear into the primary reduc-
drum support bearing cage.
tion assembly, engaging the main shaft splines.
10. Install the O-ring on the drum support bearing
13. Position the spacer in place over the sun gear.
14. Secure the unit end cover to the ring gear and
11. Position the drum support bearing cage in place
right drum end using the capscrews and washers.
on the drum. Apply Loctite on the bolt threads. In-
Apply Loctite to the capscrew threads and torque the
stall the bolts and washers and torque 9 to 11 foot-
capscrews 27 to 29 foot-pounds (3.8 to 4.0 kgm).
pounds (1.3 to 1.5 kgm).
15. Install the thrust cover. Install the capscrews
and tighten securely.
For older Model 15 Hoist skip to step
16. Turn the main shaft by hand to check for free
rotation with no tendency to lock-up or bind.
12. Press the bearing into the left side of the hoist
drum. Install the seal into the left side of the hoist
Set the drum into position in the center hous-