TM 9-2320-260-10
Table 3-1. Troubleshooting( Cont’d)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2.
Check front air coupling shutoff valves. Close front air coupling shutoff valves if open.
Step 3.
Check rear air coupling shutoff valves. Close rear air coupling shutoff valves if open.
Step 4.
Check trailer air coupling shutoff valves (M818 and M819 only).
Close trailer air coupling shutoff valves if open.
19. TRAILER BRAKES DO NOT FUNCTION WHEN BRAKE PEDAL IS DEPRESSED OR HAND
CONTROL LEVER IS USED (M818 AND M819 ONLY).
Step 1.
Check trailer air coupling shutoff valve.
Open trailer air coupling shutoff valves if closed.
Step 2.
Check for loose tractor-to-trailer hose connections and for air leaks.
Tighten leaking or loose tractor-to-trailer hose connections.
20. PARKING BRAKE DOES NOT HOLD VEHICLE ON 45 DEGREE INCLINE.
Step 1.
Check parking brake lever position.
If partially applied, pull parking brake lever all the way up.
Step 2.
Check lever adjustment.
Turn knob on end of lever clockwise to increase braking action; counterclockwise to
decrease braking action.
21. PARKING BRAKE DRAGS OR OVERHEATS.
Check parking brake lever position.
If partially applied, release parking brake.
WHEELS AND TIRES
22. WHEEL WOBBLES OR SHIMMIES.
Check for loose wheel stud nuts.
Tighten loose wheel stud nuts using wheel stud nut wrench and handle.
Notify organizational maintenance to retighten to proper torque.
23. EXCESSIVE OR UNEVEN TIRE WEAR.
Check air pressure in tires.
Inflate or deflate tires to correct air pressure. (See table 1-4.)
24. VEHICLE WANDERS OR PULLS TO ONE SIDE ON LEVEL PAVEMENT.
Check air pressure in tires.
Inflate or deflate tires to correct air pressure. (See table 1-4.)
STEERING
25. HARD STEERING.
Step 1.
Check tire air pressure.
Inflate or deflate tires to correct air pressure. (See table 1-4.)
Step 2.
Check power steering reservoir oil level.
If low, add proper oil to FULL mark on dipstick (refer to paragraph 3-11d).
26. OIL LEAKS.
Notify organizational maintenance.
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