Section IV. UNIT TROUBLESHOOTING - TM-9-2350-238-20-20052

9-2350-238-20-2

Section IV. UNIT TROUBLESHOOTING

2-9.

TROUBLESHOOTING

INFORMATION.

a. T h e s y m p t o m i n d e x c a n b e u s e d a s a q u i c k g u i d e t o t r o u b l e s h o o t i n g . C o m m o n m a l f u n c -

tions are listed in alphabetical order under each major assembly, which appear in MAC order,

with a page number reference to the troubleshooting table where a test or inspection and correc-

tive action are provided.

b. The

unit

troubleshooting

table

lists

the

malfunction,

the

test

inspection

indicating

the

malfunction,

and

the

necessary

corrective

action.

If the malfunction still exists after all listed unit maintenance corrective actions have been

performed,

notify

direct

support

maintenance.

UNIT

TROUBLESHOOTING

SYMPTOM

INDEX

Troubleshooting

Procedure

Page

BOOM

AND

WINCH

INSTALLATION

Boom winch does not operate when cab traverses and boom raises and

2-14

Iowers normally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Boom

winch is slow in either direction when cab traverses and boom raises

2-14

and

lowers normally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Boom

winch is slow when reeling in when all other operations are normal . . . . .

Boom

winch reels in, but will not pay out, or winch pays out, but will

2-14

not

reel in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Boom

winch speed cannot be shifted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Level

wind assembly does not center itself . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Level

wind does not traverse cab in either direction . . . . . . . . . . . . . . . . . . .

Tow

winch does not operate when cab traverses and boom raises and lowers

2-13

normally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tow winch operation is slow in either direction when cab traverses and boom

2-14

raises and lowers normally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tow winch reels in, but will not pay out, or winch pays out,

but will not reel in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

CAB

FILTER

INSTALLATION

Cab air purifier unit does not operate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

ELECTRICAL

INSTALLATION

All circuits in cab are not operating when MASTER switch is ON . . . . . . . . . . . 2-16

Both floodlights are not operating when MASTER and FLOODLIGHTS switches

are ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-17

Cab signal flasher headlight and flasher indicator lamps are not operating when

MASTER and FLASHER SIGNAL switches are ON. . . . . . . . . . . . .

. . . . . . . . . 2-18

Cab signal flasher headlight does not operate when flasher indicator

lamp is on

and MASTER and FLASHER SIGNAL switches are ON . . . . . . . . . .

.......

2-18

Either dome light does not operate when MASTER switch is ON . . . .

........

2-18

2-12