Spicer 326837 - Manual (Page 9)

06SE01TBC6298 9
5. Take “A” dimension exactly as before. Take “B”
measurement using a lever to move brake adjuster as
shown until the shoes contact drum. Refer to Figure 17.
The result of “B” - “A” is brake free stroke. Adjust free
stroke to within range specified in Table 2.
6. To adjust free stroke, depress locking sleeve on brake
adjuster adjustment nut and turn in direction required.
Recheck free stroke to verify it is within range. Make sure
sleeve is “locked” when adjustment is completed.
7. Verify that brakes are not dragging by spinning wheels by
hand or tapping drum lightly with a hammer and listening
for a sharp ringing sound.
8. Perform Brake Operation Check, to verify proper
operation of brakes before releasing vehicle for service.
Brake Adjustment - Self Adjusting Brake
Adjuster
1. Brake adjustment for self adjusting brake adjusters is the
same as for manual brake adjusters.
2. Refer to the Self Adjusting Brake Adjuster Manufacturer’s
Instructions for proper installation.
Brake Operation Check
NOTE: An assistant is required to make a thorough brake operation
check.
1. Apply brakes to 80 psi and hold. Check all air line fittings
and air chambers for leakage.
2. Apply and release brakes while observing operation of
brake adjusters on each axle. As brakes are applied and
released, brake adjusters should move in unison visually.
3. Investigate source and make corrections for any
discrepancies found in Steps 1 and 2.
4. Drive vehicle at low speeds in a safe area and make several
brake applications to verify safe operation and absence of
pulling, grabbing, or noise. If any of these are noted,
investigate and repair prior to releasing vehicle for service.
B
Measure with
Brake Applied
Using Lever,
Dimension B
Lever
Figure 16
!
CAUTION: Never release a vehicle for service if any brake
discrepancy - no matter how minor - is evident.