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 662 of 985

TM 9-2320-279-20-1

Electrical System Maintenance Instructions (Cont)

7-27. TACHOMETER/HOURMETER REMOVAL/INSTALLATION.

This task covers:

a. Removal

c. Follow-on Maintenance

b. Installation

INITIAL SETUP

Models

References

All

None

Test Equipment

Equipment Condition

None

TM or Para

Condition Description

Special Tools

Para 7-19

Instrument panel removed.

None

Special Environmental Conditions

Supplies

None

Tags, identification, Item 48, Appendix C

General Safety Instructions

Personnel Required

None

MOS 63S, Heavy wheel vehicle mechanic

a. Removal.

(1)

Pull light socket (1) from

tachometer/hourmeter (2).

NOTE

Tag and mark wires before disconnecting.

(2)

Loosen four screws (3) and disconnect four

wires (4) from terminal strip (5).

(3) Remove two nuts (6), lockwashers (7), and

wire (8).

(4)

Remove bracket (9) and

tachometer/hourmeter (2) from instrument

panel (10).

b. Installation.

(1)

(2)

(3)

(4)

Install tachometer/hourmeter (2) and

bracket (9) on instrument panel (10).

Install wire (8), two lockwashers (7), and

nuts (6) on tachometer/hourmeter (2).

Connect four wires (4) to terminal strip (5) on

tachometer/hourmeter (2). Tighten four

screws (3).

Push light socket (1) in

tachometer/hourmeter (2).

c. Follow-on Maintenance.

(1)

Install instrument panel (para 7-19).

(2)

Start engine (TM 9-2320-279-10).

(3)

Check operation of tachometer/hourmeter (TM 9-2320-279-10).

(4)

Shut off engine (TM 9-2320-279-10).

END OF TASK

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