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TM 5-4210-220-12
4-32. FRONT AXLE-Continued
(9)
Push
camshaft
outward
and
note
maximum
dial
indication. The end play measured should be 0.005 -
0.045 in. (0.13 - 1.14 mm).
(10)
If
end
play
is
outside
these
limits
adjust
by
removing/installing shim washers (12) between slack
adjuster and lock ring.
NOTE
Shim washers are available in two thicknesses, 0.030 in.
(0.76 mm) and 0.060 in. (1.52 mm).
(11)
Check that inside surfaces of bushings (25 and 26) are
smooth. If rough, replace bushings and oils seals.
Bushings can be removed with a suitable puller.
(12)
Mount a suitable dial indicator with the plunger
referencing the cam face at 90 deg. to cam bearing
journal.
(13)
Set indicator dial to zero and move cam head radially up
and down. Note maximum dial reading.
(14)
Mount dial indicator at slack adjuster end of camshaft and
repeat step 13.
(15)
If measured play exceeds 0.02 in. (0.51 mm) at either end of camshaft, replace bushings (25 and 26).
(16)
Recheck radial play, as above, when new bushings are installed in ball socket bore. If play still exceeds
0.020 in. (0.51 mm), replace camshaft
(17)
Check camshaft oil seals (15) for wear and damage. If oil seal lips are distorted or damaged, or new
bushings (25 and 26) have been installed in ball socket, replace oil seals. Be sure seal springs are facing
in the same direction, away from the brake spider.
(18)
Inspect slack adjuster (14) for damage to body, splines, and clevis pin bushings. If any serious defects
are noticed, replace slack adjuster.
4-607
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