ALL WRECKER FUNCTIONS DO NOT OPERATE FROM WRECKER CONTROL PANEL (CONT)

TM 9-2320-366-20-2

e138. ALL WRECKER FUNCTIONS DO NOT OPERATE FROM WRECKER CONTROL PANEL (CONT)

e138.

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Circuit breaker CB50 OK.

Voltage Test or

Mode selector switch in

STE/ICE-R Test #89

NORMAL position.

Is 24 vdc present at

REASON FOR QUESTION

Hydraulic functions OK.

TB-7A?

If 24 vdc is not present,

Station selector switch

wire 7A is faulty.

in wrecker control panel

position.

Operation from wrecker

control panel OK.

Station selector

switch OK.

POSSIBLE PROBLEMS

Faulty wrecker control

panel wiring harness.

YES

Repair wire 7A (para 2-45) or

replace wrecker control panel

wiring harness (para 7-83).

Perform Electrical System Troubleshooting

(e140. Main Winch Left or Right Speed Function

Does Not Operate From Wrecker Control Panel

and e141. Main Winch Left or Right Free Spool

Function Does Not Operate From Wrecker

Control Panel).

2-1444