Bendix Commercial Vehicle Systems 16 1/2 SCAM/XTRA LIFE SERV MANUAL - Manual (Page 14)

AIR CHAMBER BRACKET ASSEMBLY
INSPECTION OF PARTS
SPIDER REMOVAL
1.
1. 1. 1. 1. Mark the postion of the spider on the axle (L.H. or
R.H.) and the orientation on the axle flange by
making a reference mark on the spider and flange.
See F
See F See F See F See Figur igur igur igur igure 4. e 4. e 4. e 4. e 4.
2. 2. 2. 2. 2. Remove the spider to axle mounting bolts.
3. 3. 3. 3. 3. Remove spider.
DUST SHIELD REMOVAL
1. 1. 1. 1. 1. Mark dust shields (upper left, lower right, etc-
prior to removal.
2. 2. 2. 2. 2. Detach dust sheild by removing the six cap screws
using a 9/16" socket. Do not remove dust shield
unless there is apparent damage.
BRAKE DISASSEMBLY (CONTINUED)
FFFFFigur igur igur igur igure 4 e 4 e 4 e 4 e 4
1. 1. 1. 1. 1. Check assembly for bent chamber bracket, broken
welds, cracks, and correct alignment.
2. 2. 2. 2. 2. Inspect camshaft bushings for signs of wear.
Bearing surfaces should be smooth and free of any
pitting or fractures. Insert camshaft and measure
looseness up and down side to side at both ends
with a dial indicator. If more than .030” movement,
replace bushings and/or camshaft. See F
See F See F See F See Figur igur igur igur igure 5. e 5. e 5. e 5. e 5.
NO NO NO NO NOTE: If it is de TE: If it is de TE: If it is de TE: If it is de TE: If it is detttttermined tha ermined tha ermined tha ermined tha ermined that a bushing r t a bushing r t a bushing r t a bushing r t a bushing requir equir equir equir equireeeeesssss
rrrrreplacement, bo eplacement, bo eplacement, bo eplacement, bo eplacement, both camshaft bushings and seals th camshaft bushings and seals th camshaft bushings and seals th camshaft bushings and seals th camshaft bushings and seals
should be r should be r should be r should be r should be replaced. All CAS eplaced. All CAS eplaced. All CAS eplaced. All CAS eplaced. All CAST SHOE and P SERIES T SHOE and P SERIES T SHOE and P SERIES T SHOE and P SERIES T SHOE and P SERIES
br br br br brak ak ak ak akeeeees ha s ha s ha s ha s havvvvve br e br e br e br e bronze cam bushings. The S onze cam bushings. The S onze cam bushings. The S onze cam bushings. The S onze cam bushings. The ST T T T TAND AND AND AND ANDARD, ARD, ARD, ARD, ARD,
XL, and XLII SERIES br XL, and XLII SERIES br XL, and XLII SERIES br XL, and XLII SERIES br XL, and XLII SERIES brak ak ak ak akeeeees use n s use n s use n s use n s use nylon bushings with ylon bushings with ylon bushings with ylon bushings with ylon bushings with
the br the br the br the br the bronze bushing a onze bushing a onze bushing a onze bushing a onze bushing as an op s an op s an op s an op s an option. tion. tion. tion. tion.
CAMSHAFT
1.
1. 1. 1. 1. Inspect camshaft spline and body for chips and
excessive deformation. Replace as necessary.
See F
See F See F See F See Figur igur igur igur igure 6. e 6. e 6. e 6. e 6.
2. 2. 2. 2. 2. Inspect cam head for cracks, and its roller surfaces
for flat spots, brinneling, or ridges.
NO NO NO NO NOTE: Un TE: Un TE: Un TE: Un TE: Unusual w usual w usual w usual w usual wear pa ear pa ear pa ear pa ear patttttttttterns which ma erns which ma erns which ma erns which ma erns which may indica y indica y indica y indica y indicattttte an e an e an e an e an
out out out out out-of-squar -of-squar -of-squar -of-squar -of-square condition. R e condition. R e condition. R e condition. R e condition. Replace damaged cam- eplace damaged cam- eplace damaged cam- eplace damaged cam- eplace damaged cam-
shaft shaft shaft shaft shafts. s. s. s. s.
FFFFFigur igur igur igur igure 5 e 5 e 5 e 5 e 5
FFFFFigur igur igur igur igure 6 e 6 e 6 e 6 e 6
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