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 687 of 985

TM 9-2320-279-20-1

Electrical System Maintenance Instructions (Cont)

7-42. HEATER FAN SWITCH 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 7-91

Batteries disconnected.

None

Para 16-11

Heater compartment cover

Supplies

removed.

Tags, identification, Item 48, Appendix C

Special Environmental Conditions

Personnel Required

None

MOS 63S, Heavy wheel vehicle mechanic

General Safety Instructions

None

(1)

(2)

a. Removal.

Remove four screws (1).

Remove jamnut (2) and

heater fan switch (3) from

back of heater control

panel (4).

NOTE

Tag and mark wires before

disconnecting.

(3)

Disconnect wires (5) from

heater fan switch (3).

b. Installation.

(1)

Connect wires (5) to heater

fan switch (3).

(2) Install heater fan switch (3)

and jamnut (2) in heater

control panel (4).

(3)

Install four screws (1).

c. Follow-on Maintenance.

(1) Connect batteries

(para 7-91).

(2)

Check operation of heater fan switch (TM 9-2320-279-10).

(3)

Install heater compartment cover (para 16-11).

END OF TASK

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