Table 4-3. Organizational Troubleshooting Table - Continued
TEST OR INSPECTION
4, GRABBING BRAKES (cont).
Step 8. Check for leaking brake wheel cylinder (all models except M127).
If leaking, replace brake wheel cylinder (para. 4-40a(4) ).
5. BRAKES DRAG AND ONE OR MORE BRAKE DRUMS RUNNING HOT.
If brakes are out of adjustment or adjusted too tightly, correctly adjust brakes (para.4-39a).
If brakes are not out of adjustment, proceed to step 2.
Step 2. Check for weak or broken brake shoe tension spring.
If tension spring is not defective, proceed to step 3.
Step 3. Visually check for broken or frozen camshaft follower (M127 only).
If camshaft follower roller is broken or frozen, notify Direct Support maintenance.
If camshaft follower roller is not defective, proceed to step 4.
Step 4. Check for leaking brake wheel cylinder (all models except M127).
If brake wheel cylinder is leaking, replace (para. 4-40a(4) ).
If brake wheel cylinder is not defective, proceed to step 5.
Step 5. Check for cracked, scored or deformed brake drum.
If brake drum is cracked or deformed, replace brake drum (para. 4-32).
If brake drum is scored, notify Direct Support maintenance.
DIFFICULTY IN TURNING HANDCRANK.
Step 1. Check for lack of lubrication.
Refer to lubrication chart (fig. 4-1). Remove lubricating fittings from gear boxes and
legs and insert a wire as an oil gage to determine amount and condition of lubricant.
in the unit.
If lubrication is correct, proceed to step 2.
Step 2. Check for bent crank operating shaft (Thomas only) or bent connecting shaft.
If shafts are not defective, proceed to step 3.
Step 3. Check for bent lower leg.
If lower leg is not bent, proceed to step 4.