Combination service and spring brake installation – SAF-HOLLAND XL-AM20006BM Brake and Service Chamber User Manual
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XL-AM20006BM-en-US · 2014-04-22 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,
and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
17. Check the brake chamber for vertical alignment. The
brake is adjusted correctly if the service push rod is at
90° from the brake chamber service base, and the slack
adjuster centerline (Figure 4).
If setup results in the condition illustrated in (Figure 5 or 6),
the brake chamber is misaligned and MUST be corrected by
one or more of the following.
Failure to align the brake chamber could
result in premature diaphragm wear or
bent push rod which, if not avoided could
cause property damage.
If setup results as illustrated in figure 5:
a. Shorten the push rod
b. Align the spring brake on the correct mounting hole
on the brake mounting bracket
c. Mount clevis in the proper slack adjuster hole
d. Change to a longer slack adjuster length
If setup results as Illustrated in figure 6:
a. Lengthen the push rod
b. Align the spring brake on the correct mounting hole
on the brake mounting bracket
c. Mount clevis in the proper slack adjuster hole
d. Change to a shorter slack adjuster length
18. Install the release tool in the tool pocket and tighten the
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19. Install the dust plug into the release tool access hole in
the center of the spring housing.
Figure 4
CORRECT WHEN BRAKE
IS APPLIED AND CAGED
(PARKING OR 60 PSI SERVICE)
CL. OF SLACK ADJUSTER
PARALLEL TO SURFACE
CL. OF
PUSH ROD
90°
90°
Figure 5
INCORRECT WHEN BRAKE
IS APPLIED AND CAGED
(PARKING OR 60 PSI SERVICE)
CL. OF SLACK ADJUSTER
NOT PARALLEL TO SURFACE
CL. OF
PUSH ROD
90°
Figure 6
INCORRECT WHEN BRAKE
IS APPLIED AND CAGED
(PARKING OR 60 PSI SERVICE)
CL. OF SLACK ADJUSTER
NOT PARALLEL TO SURFACE
CL. OF
PUSH ROD
90°
Combination Service and Spring Brake Installation