Bendix Commercial Vehicle Systems ASA-5 AUTOMATIC SLACK ADJUSTER 2/11 - Manual (Page 8)

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CLEANING AND INSPECTION
1. Inspect the worm gear camshaft splines for damage.
If damaged, replace the ASA‑5 ® slack adjuster.
2. Clean and inspect the yoke pin and link pin holes in
the yoke, adjuster link and slack adjuster body. The
holes should be visually round with no perceptible “egg
shaping.” A new yoke pin and link pin can be used to
make this inspection. If this con dition is noted, the
affected part must be replaced.
3. Clean out the retaining ring grooves in the yoke.
REASSEMBLY
1. If the ASA‑5 ® slack adjuster uses a yoke pin bushing,
press it into the slack adjuster arm.
2. Depending on environmental conditions an applica tion
of anti‑seize compound to both the yoke and link pins
may facilitate later removal. Install the yoke and secure
it to the ASA‑5 ® slack adjuster body and link using the
yoke pin and link pin. Install washers and cotter pins
in the yoke pin and link pin, and secure each. Bend
each leg of the cotter pins to a minimum of 25 degrees,
creating an included angle of at least 50 degrees
between the legs.
3. Lubricate the automatic slack adjuster through the lube
fitting with a quality multipurpose chassis lubricant
(N.L.G.I. Grade 2). Lubricate the slack adjuster until
clean lubricant flows from the grease relief opening in
the boot.
RETROFITTING THE ASA-5 ® SLACK
ADJUSTER
PREPARATION
The Bendix ® ASA‑5 ® automatic slack adjuster can replace
a manual slack or competitive automatic slack adjuster
provided some considerations are kept in mind:
1. Excessive duty cycles, high application pressures and
brake force compounding can result in reduced slack
adjuster durability.
2. Determine that the AL factor of the vehicle to be
retrofitted is 195 or less. To determine the AL factor
multiply the slack adjuster arm length (from the center
of the cam spline to the center of the yoke pin hole in
use) times the brake chamber size. Example: a type
30 brake chamber connected to a 6 inch arm slack
adjuster, A = 30 square inches, L = 6 inches; therefore,
30 x 6 = 180, AL factor.
3. Make sure the foundation brake components are in
good condition. Excessive drum out‑of roundness
will result in excessive lining wear. See the In Service
Inspection section contained in this manual.
4. In order to select the proper slack adjuster, choose
an ASA‑5 ® slack adjuster with the same arm length,
spline size, push rod thread size and offset as the slack
adjuster it is replacing.
5. When retrofitting the Bendix ® ASA‑5 ® slack adjuster,
make certain to read the instructions packaged with
all service replacement ASA‑5 ® slack adjusters.