Figure 3-94. Rear hook rollers, removal and installation.
3-120. Roller Circle Rollers
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
a. Removal and Installation.
(2) Visually inspect mounting hardware for
burs, stripped threads or excessive As car. Inspect
Note. To remove a damaged roller,
roller for chipping, cracks, breaks, or flat spots (wear).
always move revolving frame left or
right until damaged roller is on high
(3) Repair by replacing defective hardware or
side of frame, opposite the opening
roller.
in frame. This will take most of the
frame weight off damaged roller and
3-121. Jackshaft Clutch Shoes
make it easier to withdraw the fluid
a. Removal and Installation.
pressure bolt from roller segment
(1) Relieve tension on three shoe return
shaft.
springs (fig. 3-95), by loosening nuts on studs, then
remove springs from stud and clutch shoe.
(1) Remove nut and lockwasher from fluid
(2) Loosen locknut and adjusting bolt until the
pressure bolt (fig. 3-94), then withdraw bolt from
adjusting assembly can be removed from between the
segment roller shaft, and remove roller from roller circle
clutch shoes.
frame.
(3) Loosen three locknuts on three setscrews
(2) Remove lubrication fitting and bushing
and back setscrews out of brackets enough to free
from fluid pressure bolt.
shoes.
(3) Remove shaft from segment roller.
(4) Remove capscrew, lockwasher, and
sleeve from eccentric, then lift both clutch shoes out of
(4) Install in reverse order.
drum.
(5) Remove or install remaining rollers in a
b. Cleaning, Inspection and Repair.
similar manner.
(1) Clean all metal parts except clutch shoe
b. Cleaning, Inspection, and Repair.
in an approved cleaning solvent and dry thoroughly.
Blow dust off clutch shoe lining and
3-102
