MAIN WINCH LH AND RH FREESPOOLS DO NOT OPERATE (CONT)

TM 9-2320-366-20-3

aa4. MAIN WINCH LH AND RH FREESPOOLS DO NOT OPERATE (CONT)

WARNING

Read WARNING

KNOWN INFO

TEST OPTIONS

on following page.

Air Pressure Test

LH and RH 30K winches

STE/ICE-R Test #50

operates.

Is 75-120 PSI

REASON FOR QUESTION

STATION SELECTOR switch to

(518-827 kPa) present at

WRECKER CONTROL PANEL.

If 75-120 PSI (518-827 kPa) is

90 degree fitting of pressure

MODE SELECTOR SWITCH to

not present, pressure

protection valve?

NORMAL.

protection valve is faulty. If

MAIN WINCH LH and RH

75-120 PSI (518-827 kPa) is

SPEED switch operates.

present, air hose is faulty.

Terminal block jumper OK.

POSSIBLE PROBLEMS

Faulty pressure protection

valve.

Faulty air hose.

Replace pressure protection

YES

valve (para 11-29).

Replace air hose (para 23-5).

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