TM-9-2330-335-14-P

SEMITRAILER, TACTICAL, BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, RESET M871R, M871A1R AND M871A2R

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE MANUAL (INCLUDES REPAIR PARTS AND SPECIAL TOOLS LIST)

SEPTEMBER 2008
TM-9-2330-335-14-P

  TM-9-2330-335-14-P - Page 93 of 640

0012-5
TM 9-2330-335-14&P
0012
BRAKES - CONTINUED
4.
NO BRAKES OR WEAK BRAKES - CONTINUED.
WARNING
To prevent injury, keep hands away from brake chamber push rods and slack adjusters. They will
move as service brakes are operated, and will automatically apply if system pressure drops.
Fingers/hands could be pinched or cut by moving parts. Failure to comply may result in injury to
personnel.
Step 8.
Have a helper apply and hold the towing vehicle service brakes. Using soapy water, check air brake
chambers for leaks at clamp bands and hose fittings.
a.
If leaks are seen at brake chamber clamp band, replace air brake chamber (WP 0038).
b.
If leaks are seen at hose fitting, tighten hose fitting or replace hose (WP 0037).
c.
If brake chambers are not leaking, go to step 9.
Step 9.
Check brake adjustment.
a.
If brakes are out of adjustment, check operation of automatic slack adjusters (WP 0034). Replace all
defective slack adjusters.
b.
If brakes are not out of adjustment, go to step 10.
Step 10.
Remove brake drum (WP 0033) and check for worn/worn out brake lining.
a.
If brake lining is worn out, replace brake shoes (WP 0032).
b.
If brake lining is not worn, go to step 11.
Step 11.
Look for grease or oil on brake lining.
a.
If brake lining has grease on it, check camshaft O-ring for damage. Replace O-ring if defective
(WP 0031) and replace brake shoes (WP 0032).
b.
If brake lining has grease or oil on it, check wheel hub grease seal for leakage. Replace grease seal if
leaking (WP 0033) and replace brake shoes (WP 0032).
c.
If brake lining shows no grease or oil, go to step 12.
Step 12.
Visually check for broken or frozen camshaft roller.
If camshaft roller is broken or frozen, replace (WP 0032).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
0.


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