Figure 4-9. Clutch brakeshoes, removal and installation.
(2) Disconnect hydraulic hose at coupling nut.
in numerical sequence. Assemble in reverse order.
(3) Remove capscrew (fig. 4-9), lockwasher,
(3) Cleaning, Inspection and Repair.
and flatwasher, then remove backplate from brake
(a) Clean all parts in an approved
drum.
cleaning solvent and dry thoroughly.
(4) Remove two retainers, springs, and brake
(b) Visually inspect brakeshoes for
spring rods.
excessively worn, or defective lining.
Replace
(5) Disconnect and remove brake return
brakeshoes when lining is defective.
spring.
(c) Visually inspect brakedrum for
(6) Remove two locks, brakeshoes, washers,
scored or damaged friction surface.
Replace a
and flatwashers from back plate.
damaged or defective brake drum.
b. Cleaning, Inspection and Repair.
(d) Visually inspect mounting hardware,
(1) Clean all parts with an approved cleaning
seals, springs or retainers for defects.
Replace
solvent and dry thoroughly.
defective parts.
(2) Visually
inspect
brakeshoes
for
(e) Visually inspect hydraulic cylinder
excessively worn or cracked lining. Replace both shoes
for leakage, or lack of freedom in movement of piston.
when lining is defective.
Replace a defective cylinder.
(3) Check brake drum for scored or damaged
friction surface. Replace a defective brake drum (para
4-9. Dipper Trip Clutch Brakeshoes
4-8 above).
c. Installation.
a. Removal.
(1) Position brakeshoes (fig. 4-9) on back
(1) Remove pin (fig. 4-6) from clevis at lever
plate, install washer and flatwasher, then secure with
and disconnect clevis.
locks.
4-9
