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NOTE: Any rework of the adjuster pin must be
avoided unless absolutely necessary.
4. If slippage occurs below the 173 kg (380 lbs)
limit, either the adjuster or adjuster pin must be
replaced. Use special sleeve A and the arbor
press to slip both adjuster assemblies off the
adjuster pin. Inspect the adjuster pin for nicks
and wear. Adjuster pins with slight nicks that
can be polished out by hand can be reused if
subsequent slip inspection is acceptable.
Replace adjuster pins that are bent or worn to
less than 9.499 mm (0.374 in.) diameter. Burred
adjuster pin threads can be repaired with a 5/
16-24 UNF-3A thread die.
Adjusters and adjuster pins are critical items in
the operation of the piston return mechanism
and must not be mishandled. Under no circum-
stances should the pin diameter be clamped in a
vise or gripped with pliers. In normal use, the
surface of the pin will show only a very slow rate
of wear and both pins and adjusters will normally
outlast many brake lining changes and brake
overhauls.
5. If required, install the adjuster on the adjuster
pin as follows as shown in Figure 6-22.
J6-18
A. Discard pilot pin
1. Arbor
2. Special Sleeve B
3. Pilot Pin
Use of special sleeves A and B to install adjuster
onto adjuster pin in correct position for assembly
in piston subassembly.
Armature Speed Rear Disc Brakes
a. Place the adjuster and pilot pin subassembly
onto the end of the adjuster pin.
b. Press the adjuster off the expendable pilot
pin, onto the adjuster pin. See Figure 6-22.
c. Press the second adjuster on to the adjuster
pin.
d. Continue to push the adjuster along the
adjuster pin until it contacts the previously
installed adjuster.
e. After assembly, check the adjuster force of
the adjuster assembly.
FIGURE 6-22. INSTALLING ADJUSTER ON
ADJUSTER PIN
4. Adjuster Assembly
5. Adjuster Pin
6. Special Sleeve A
7. Arbor Press Table
10/06 J06025
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