SAF-HOLLAND XL-AM20006BM Brake and Service Chamber - Manual (Page 6)

6 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.
10. Readjust the slack adjuster arm and move it toward the
spring brake by turning the adjusting hex. Check to make
sure the brake pads are NOT in contact with the drum. Align
the slack adjuster arm with the center of the push rod clevis.
IMPORTANT: Consult the axle or vehicle manufacture
for the correct slack adjuster length, and
correct slack adjuster hole location on the
slack adjuster.
Failure to determine the correct mounting
position could cause premature diaphragm
wear or service push rod buckling which,
if not avoided could result property damage.
11. Align slack adjuster arm with the center of the push rod
clevis. Install the clevis pin and cotter pin.
12. Check to be sure the angle formed by the slack adjuster and
the brake chamber push rod is greater then 90° when the
brake is in the caged position (Figure 3).
13. Install the slack adjuster retaining mechanism on the end
of the “Scam“ spline shaft, being sure to shim inboard or
outboard if necessary for the slack adjuster to maintain
± 2° lateral alignment with the push rod. Shim the slack
adjuster to maintain less than .06" (1.25 mm) lateral end
play, or consult the axle manufacture for the correct lateral
end play requirement.
NOTE: For additional information, consult the slack
adjuster manufacture, or TMC Recommended
Practice, RP 609A, VMRS 013001, 013002 for
automatic and manual slack adjuster installations.
14. Connect the service and emergency air lines to the
proper air ports, torque the service and emergency air
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that a commercial grade thread sealing compound be
used on air line adapters before installation into the
air ports. Deform the cotter pin on the clevis assembly,
and uncage the brake.
15. Uncage the brake by adding air pressure to the parking
side and turning the release bolt nut counter clockwise
with finger or and wrench; DO NOT use and impact
wrench. Turn the release bolt counter clockwise 1/2
turn and pull out.
16. Apply vehicle or shop air pressure, 120 psi (8.3 bar) or
90 psi (6.2 bar) minimum, to the emergency side of the
brake three times. Maintain vehicle or shop air pressure.
Check for leaks by applying a soap and water solution
and looking for air bubbles.
Figure 3
CORRECT WHEN BRAKE IS
NOT APPLIED AND CAGED PUSH ROD ANGLE
GREATER THAN 90°
Combination Service and Spring Brake Installation