MERITOR-TP-9853
MERITOR WEDGE BRAKES
MAINTENANCE MANUAL NO. 4R
FEBRUARY 1995
MERITOR-TP-9853 - Page 11 of 32
Section 1
Introduction
7
During brake release, the shoe return springs
retract the shoes, which force the adjusting bolt
and actuator back into the housing. Because the
actuator teeth are spiral, engagement with the
pawl teeth causes the actuator to rotate as it
retracts. Rotating the actuator causes the adjusting
bolt to unthread outward from the actuator.
The outward movement of the adjusting bolt
moves the shoe out and reduces the clearance
caused by lining wear.
Figure 1.12.
Figure 1.12
Adjusting bolt
unthreads outward.
Actuator
rotates
as it
retracts.
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