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TM 10-3930-671-24
Service Brake Adjustment
TA18 Transaxle
Figure 4. Service Brake Installation
NOTE
Prior
to
performing
this
service
procedure, it is recommended that you
first:
•
Remove key for safety.
•
Be sure transmission directional control
is in NEUTRAL and truck is prevented
from moving when parking brake is
released
1. The service brakes on the TA18 transaxle may
be through the backing adjusted from the inner
side through the backing plate or from the outer
side through access openings in the wheel
hub/brake drum (later models).
2. Brake clearance is measured between brake
shoe and drum, with brakes fully released.
Brake Clearance: .010-.012 in. (0. 255-0.304
mm)
3. Release parking brake
NOTE
Do not overtighten brakes. It is very
difficult to release the ratchet wheel
pawl and back off adjustment of the
brake.
Adjustment Thru Backing Plate
1. Remove the 4 dust plugs in brake backing plate.
2. Use a feeler (thickness) gauge to check the
clearance between each shoe and drum. Use a
screwdriver or equivalent tool to rotate the
adjustor ratchet wheel in the brake.
WARNING
Some brake linings are still made with
asbestos which when inhaled has been
found to be extremely dangerous. Do
not use compressed air to clean the
brake shoes or other parts before or
after disassembly. Instead, wipe down
the assembly and then the components
with damp, disposable wipers and
immediately discard them safely. Avoid
breathing dust or injury may result.
3. Use a screwdriver to push on and release the
ratchet pawl when it is necessary to back off
adjustment (increase clearance) of the brake.
4. Carefully adjust clearance between brake shoes
and drum to .010-.012 in. (0.255-0.304 mm)
measured at dust plug openings at outer sides of
backing plate.
5. Replace the dust plugs in brake backing plate
when adjustment is completed.
F-392
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