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 95 of 640

0012-7
TM 9-2330-335-14&P
0012
BRAKES - CONTINUED
6.
GRABBING BRAKES.
Step 1.
Check for moisture in air reservoirs.
WARNING
Wear protective goggles when opening drain cock and avoid the air stream. Failure to comply could
result in injury to personnel.
a.
Open drain cocks and allow moisture to drain (WP 0018).
b.
If no moisture is present, close drain cocks and go to step 2.
Step 2.
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 3.
Step 3.
Check for loose or worn wheel bearings.
a.
If wheel bearings are loose, adjust (WP 0033).
b.
If wheel bearings cannot be adjusted, replace (WP 0033).
c.
If wheel bearings are not loose or worn, go to step 4.
Step 4.
Remove brake drum (WP 0033) and 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 oil on it, check wheel hub oil seal for leakage. Replace oil seal if leaking
(WP 0033), and replace brake shoes (WP 0032).
c.
If brake lining shows no grease or oil, go to step 5.
Step 5.
Visually check for broken or frozen camshaft roller. Look for flat spots on camshaft roller and camshaft.
a.
If camshaft roller is broken or frozen, replace (WP 0032).
b.
If camshaft is defective, replace (WP 0031).
c.
If camshaft and roller are not defective, go to step 6.
Step 6.
Check for loose or worn brake lining.
a.
If brake lining is loose or worn, replace brake shoes (WP 0032).
b.
If brake lining is not loose or worn, go to step 7.
Step 7.
Check for cracked, scored, or deformed brake drum.
a.
If brake drum is cracked or deformed, replace (WP 0033).
b.
If brake drum is scored, notify Direct Support Maintenance.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
0.


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