Bendix Commercial Vehicle Systems EB/ES BRAKES SERVICE MANUAL - Manual (Page 37)

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Figure 43. Automatic Slack Adjuster Inspection
Inspection
Figure 42. Air Chamber Inspection
Table 6. Distance: Clevis Pin Hole Centerline to Air Chamber Face
Distance: Clevis Pin Hole
Centerline to Air Chamber Face
All brakes (except 2-5/8" ± 1/16"
Mack and Trailer Axle) (66.7 ± 1.59 mm)
4-3/8" ± 1/16"
(111.1 ± 1.59 mm)
Trailer Axle 6-1/2" ± 1/8"
brakes (165.1 ± 3.175 mm)
Mack brakes
Inspection
Air Chamber Inspection
WARNING: To prevent personal injury, be sure to “cage”
spring before removing spring-brake type air chamber.
NOTE: This information is general in nature. For specifi c air chamber
inspection guidelines, refer to the manufacturer’s instructions.
1. Check for air leaks, cracked housing, bent pushrod, loose clamp
ring, clogged vent holes or loose air fi tting. Repair or replace as
recommended by the manufacturer.
2. If air chamber is repaired or replaced, check distance from clevis
pin hole centerline-to-air chamber face. Refer to Figure 42 and
Table 6 for manual brake adjusters. For self adjusting brake adjusters
refer to manufacturers guidelines.
3. If a new air chamber is installed, ensure that cut-off pushrod does
not project too far into clevis. Minimum clearance: clevis centerline
to pushrod end should be 7/8" (22.2 mm).
4. Check clevis pin for cracks and wear.
Brake Adjuster Inspection
NOTE: This information is general in nature. For specifi c manual
or self adjusting brake adjuster inspection guidelines, refer to the
manufacturer’s instructions.
1. Check clevis pin bushing for cracks and wear. Refer to Figure
43. Replace as necessary.
2. Check splines for chipped teeth and deformation. Replace brake
adjuster if necessary.
3. Depress locking sleeve and turn brake adjuster adjustment nut
with a wrench at least one turn in each direction. If binding is
present or if excessive force is required to rotate, replace the
brake adjuster.
CAUTION: If any of those conditions are found, the brake
adjuster should be replaced. Do not attempt to repair a faulty
brake adjuster!
See
Table 6
Check for
Cracks or Worn
Splines
Check Overall
for Cracks
Check for
Worn Clevis
Pin Bushing