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Section IV. UNIT TROUBLESHOOTING PROCEDURES

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TM-9-2330-380-14-P Semitrailer Van: Electronic Tactical 12-Ton 4-Wheel XM1063 (NSN 2330-01-224-9244) and M129A4 (NSN 2330-01-372-5642) Manual

Table 4-2. Unit Troubleshooting

TM 9-2330-380-14&P

4-15. Troubleshooting Malfunction Index

Troubleshooting

Procedure

Page

ELECTRICALSYSTEM

Alllightsfailtolight ................................................................................................................... 4-9

One or more lamps will not light ............................................................................................... 4-11

Dimorflickeringlights ............................................................................................................ 4-11

Directionalsignalsinoperative .................................................................................................. 4-13

All 110-volt lamps fail to light (M129A4 Only) ......................................................................... 4-13

One or more 110-volt lamps (But Not All) fail to light (M129A4 only) ........................................ 4-13

One or more fluorescent lamps fail to light (M129A4 only) ......................................................... 4-14

All 110-volt receptacles fail to work (M129A4 Registration Numbers NX0RKB and

Subsequent) .......................................................................................................................... 4-14

One or more 110-volt receptacle (but not all) fail to work (M129A4 Registration Numbers NXORKB

and Subsequent).................................................................................................................................4-14

BRAKE SYSTEM

10.

Brakes will not release ............................................................................................................

4-15

11.

No brakes or weak brakes .....................................................................................................

4-16

12.

Slow brake application or slow release .....................................................................................

4-17

13.

Grabbing brakes ....................................................................................................................

4-18

14.

Brakedrumrunninghot ..........................................................................................................

4-19

15.

Unevenbraking .....................................................................................................................

4-19

16.

Noisy brakes .........................................................................................................................

4-19

WHEELS, HUBS, BEARINGS AND TIRES

17.

Severely worn, chafed, scuffed or show sudden increase in visible wear ....................................... 4-20

18.

Noisywheels ......................................................................................................................... 4-20

19.

Wobblywheels ...................................................................................................................... 4-21

SUSPENSION SYSTEM

20.

Pullingtoleftorright ............................................................................................................... 4-21

21.

Improperspringaction ............................................................................................................ 4-22

LEVELING JACK AND LANDING GEAR

22.

Difficultyinloweringorraising ................................................................................................. 4-22

DOORS

23.

Difficultyinlockingorunlockingdoors ..................................................................................... 4-22

24.

Door hinges do not operate properly ........................................................................................ 4-23

25.

RFI shielding does not provide good continuity (XM1063 only) .................................................. 4-23

4-8