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 571 of 985
TM 9-2320-279-20-1
Contents
Para
Neutral Interlock Switch Sender Unit Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . 7-97
Tachometer Sending Unit Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-98
Traction Control Indicator Light Assembly Removal/Installation . . . . . . . . . . . . . . . . . . . 7-99
Ether Start Switch Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-100
Horn Switch Contact Roller Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-101
Dimmer Switch Removal/Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-102
Trailer Electrical Connector Removal/Installation (M983). . . . . . . . . . . . . . . . . . . . . . . . . 7-103
Fuel Restriction Sensor Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-104
Clearance Light Wiring Harness Removal/Installation (M977, M985) . . . . . . . . . . . . . . . . 7-105
Page
7-359
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7-377
Section I. INTRODUCTION
7-1. GENERAL.
This chapter contains maintenance instructions for replacing, installing, adjusting,
removing, and testing the electrical system components authorized by the Maintenance Allocation Chart
(MAC) at the organizational maintenance level.
Section II.
ALTERNATOR AND VOLTAGE REGULATOR
Electrical System Maintenance Instructions
7-2. ALTERNATOR TESTING.
This task covers:
a. Alternator Testing
b. Follow-on Maintenance
INITIAL SETUP
I
Models
Equipment Condition
All
TM or Para
Condition Description
Test Equipment
TM 9-2320-279-10 Parking brake on.
Multimeter NSN 6625-01-139-2512
TM 9-2320-279-10 Engine cover open.
TM 9-2320-279-10 Engine side panel removed.
Special Tools
TM 9-2320-279-10 Engine running.
None
Special Environmental Conditions
Supplies
None
None
General Safety Instructions
Personnel Required
None
MOS 63S, Heavy wheel vehicle mechanic
References
None
7-3
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