TM-9-2320-272-24-3
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4
JUNE 1998
TM-9-2320-272-24-3 - Page 538 of 799
TM 9-2320-272-24-3
4-168. FLUORESCENT LIGHT FIXTURES MAINTENANCE
THIS TASK COVERS:
a. Removal
d. Assembly
b. Disassembly
e. Installation
c. Inspection
INITIAL SETUP:
APPLICABLE MODELS
MANUAL REFERENCES (TM)
M934/A1/A2
TM 9-2320-272-10
TOOLS
TM 9-2320-272-24P
General mechanic’s tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
Electrical tool kit (Appendix E, Item 40)
l
Parking brake set (TM 9-2320-272-10).
MATERIALS/PARTS
l
Battery ground cables disconnected (para. 3-126).
Lockwasher (Appendix D, Item 381)
l
Fluorescent light tubes removed (para. 3-371).
NOTE
All eight fluorescent light fixtures are removed and installed the
same way This procedure covers one fluorescent light fixture.
a. Removal
1.
Remove twenty screws (7) and light fixture body (8) from van ceiling (1).
2.
Remove nut (6), lockwasher (5), screw (9), and wire (4) from light fixture body (8). Discard
lockwasher (5).
3.
Remove two wires (3) and (10) and insulated wire splices (2) from light fixture body (8). Discard
insulated wire splices (2).
b. Disassembly
1.
Remove four screws (19) and light fixture (20) from light fixture body (8).
2.
Remove six screws (18), nuts (17), and sockets (14) from light fixture (20).
3.
Remove twelve screws (16) and wires (13) from six sockets (14).
4.
Remove six starters (15) from sockets (14).
5.
Remove grommet (11) from harness (12).
6.
Remove harness (12) from light fixture (20).
c. Inspection
Inspect six starters (15) for burns or damage. Replace if burnt or damaged.
d. Assembly
1.
Install six starters (15) on six sockets (14).
2.
Install twelve wires (13) on six sockets (14) with twelve screws (16).
3.
Install six sockets (14) on light fixture (20) with six screws (18) and nuts (17).
4.
Install grommet (11) on harness (12).
5.
Install light fixture (20) on light fixture body (8) with four screws (19).
4-802
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