a. General. The transmission parking brake is
mounted at the rear of the transmission as shown in
figure 4-31. Application of the parking brake locks
the output shaft preventing movement of the forklift
truck. The brake drum is splined and mates with the
output shaft. Two brake shoes when applied provide
the means for locking the output shaft.
b. Removal and Disassembly.
(1) Remove propeller shaft and yoke flanges (fig.
If brake shoes (9, fig. 4-32) are to be replaced,
remove six screws (4) and washers (5) and re-
move brake drum (6) to gain access to brake
shoes for replacement.
(2) Block output shaft and remove output flange
nut (1, fig. 4-32), washer (2), and packing (3).
(3) Remove parking brake components as shown
in figure 4-31.
c. Cleaning. Clean all metal parts except brake
shoes with cleaning solvent P-D-680. Dry parts thor-
d. Inspection and Repair
(1) Inspect springs (8, fig. 4-32) for evidence of
permanent set. Replace as necessary.
(2) Inspect brake drum (6) for excessive scoring or
cracks. Replace if necessary.
(3) Inspect brake shoe (9) linings for excessive
wear or oil damage. Replace as necessary.
(4) Inspect flange (7) for cracks, deformed splines,
and pitting. Replace if necessary.
(5) Inspect brake actuator (10) and backing plate
(13) for cracks, pitting, and deformation. Replace if
any of these defects are found.
e. Reassembly and Installation. Reassemble and in-
stall the transmission parking brake in reverse se-
quence of disassembly and removal.
(1) Submerge all parts, prior to reassembly, in
clean oil which will be used in the transmission (refer
to current lubrication order).
(2) Apply a thin coat of permatex No. 2 or equiva-
lent on the outer diameter of seals to assure an oil
(3) Reassemble the control valve assembly in re-
verse order of disassembly.
g. Installation. Install the control valve assembly in
reverse order of removal.