Bendix Commercial Vehicle Systems ASA-5 AUTOMATIC SLACK ADJUSTER 2/11 - Manual (Page 9)

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A. Reposition components and torque to
specification.
B. Replace damaged or worn parts.
ASA-5 ® SLACK ADJUSTER TROUBLESHOOTING CHART
SYMPTOMS
1. Brake Actuator stroke is
too long.
WARNING: Automatic
slack adjusters should
not be manually
adjusted in an effort
to correct excessive
push rod stroke,
because this condition
indicates that a
problem exists with
the automatic adjuster,
with the installation of
the adjuster, or with
related foundation
brake components,
which manual
adjustment will not fix.
A. Loose actuator push rod
jam nut.
B. Excessive clearance
between adapter/
adapter bushing and
yoke due to wear.
C. Excessive clearance
between components:
yoke pin—yoke
link pin—link
yoke pin—body.
D. Damaged (worn)
splines on slack or
camshaft.
E. Weak or broken brake
actuator return springs.
Weak or broken brake
shoe return spring.
F. Worn or broken
foundation brake
components, including
camshaft bushings,
brake chamber bracket,
etc.
G. ASA‑5 ® adjuster
mechanism not
functioning.
H. Brake drum—worn,
excessively machined,
bell‑mouthed,
ex cessive thermal
expansion.
I. Damaged ASA‑5 ® slack
adjuster.
J. ASA‑5 ® slack adjuster
improperly installed.
CAUSE REMEDY
C. Replace worn parts.
D. Replace damaged parts.
E. Replace weak or broken springs.
F. Repair or replace as required per In Service
Inspection.
G. Lubricate, test adjuster mechanism, conduct
in service inspection, repair components as
necessary, replace.
H. Replace or repair as required.
I. Replace component(s) or slack adjuster.
J. Correct installation position.