TM-9-2320-279-20-1

M977 SERIES, 8x8 HEAVY EXPANDED MOBILITY TACTICAL TRUCKS (HEMTT)

TECHNICAL MANUAL; MAINTENANCE INSTRUCTIONS; ORGANIZATIONAL MAINTENANCE, VOLUME 1 OF 3

TM-9-2320-279-20-1 - Page 272 of 985

TM 9-2320-279 -20-1

Troubleshooting Malfunctions (Cent)

Table 2-9. Troubleshooting (Cent)

Ulalfunction

Test or Inspection

Corrective Action

HEAVY-DUTY WINCH (CONT)

1. WINCH CABLE WILL NOT PAY OUT (M984) (CONT).

Step

2.

‘l&t for defective winch controller. Test resistance between cable connector sockets A

and D when pressing OUT switch on controller.

If resistance is zero ohms, go to Step 6.

If resistance is more than zero ohms, go to Step 3.

Step

3.

Remove controller cover. Test resistance on wire No. 682 between connector socket A and

IN switch terminal NC1.

If resistance is more than zero ohms on either wire, replace defective wire

(para 17-24 and fig. 2-8).

Q

E

‘D:

*()

O

OB

00

FGO

EElu

.——

—

————

—.——

————

————

———

/

—.

\

,

I

OUT

IN

I

●

❞

N04

N03

~ 279

-L NC2

NC1

279

NC1

NC2

~ 279< N03 N04

I

I

B

681

I

1

I

!

G

849

1

m

I

1

A

682

1

J:

;

‘\

I

I

I

I

I

I

1

I

t

\

_____

—..——

.——

—

____

——

——

/’

TA 188038

Figure 2-8. Winch Controller Wiring Diagram.

2-179