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 TM 9-2330-385-14
Table 4-2. Unit Troubleshooting Symptom Index - Continued
Page
Fault
Troubleshooting Procedure
Number
Number
12 VOLT ELECTRICAL SYSTEM (CONT).
11.
Front Side Marker Light(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . .
12.
Rear Side Marker Light(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . .
13.
Rear Marker Light(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . .
14.
Taillight(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . . . . . . .
15.
Stoplight(s) Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . . . . . . .
16.
All Lights On Rear Of Trailer Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . .
17.
Taillight And Stoplight Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . .
18.
Rear Side Marker Lights And Rear Marker Lights Do Not Operate
(S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19.
All Marker Lights Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . .
20.
All Trailer Lights Do Not Operate (S/N YB 6122-075 And Up) . . . . . . . . . . . . . . . . . .
AIR SYSTEM
1.
Trailer Air System Will Not Charge Or Maintain A Charge . . . . . . . . . . . . . . . . . . . . .
2.
One Or Both Flatrack Locking Mechanism Latches Will Not Lock . . . . . . . . . . . . . . .
3.
One Or Both Flatrack Locking Mechanism Latches Will Not Unlock Or Remain Unlocked
4.
Drawbar Will Not Raise Or Remain Raised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.
Drawbar Will Not Lower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.
Drawbar Raises Without Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BRAKE SYSTEM
1.
All Parking Brakes Do Not Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
Parking Brake(s) On One Axle Do Not Release Or Do Not Release Correctly . . . . . . .
3.
Parking Brakes On All Axles Do Not Apply, Or Apply Slowly . . . . . . . . . . . . . . . . . .
4.
Parking Brake(s) On One Axle Do Not Apply Or Apply Slowly . . . . . . . . . . . . . . . . . .
5.
Service Brakes On All Axles Do Not Apply Or Apply Slowly . . . . . . . . . . . . . . . . . . .
6.
Service Brake(s) On One Axle Do Not Apply Or Apply Slowly . . . . . . . . . . . . . . . . . .
7.
Service Brake(s) On One Axle Does Not Release Or Does Not Release Correctly . . . .
8.
Trailer Brakes Unevenly And Pulls To One Side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.
Excessive Braking Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.
Trailer Brakes Grab When Applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11.
Brake Drums Overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AXLES
1.
Trailer Fails To Follow Truck; Pulls to One Side or Wanders
....................
TIRES, WHEELS AND HUBS
1.
Wheel Wobbles And Shimmies Or Tire Wears Unevenly
.......................
4-24
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