TM 9-2320-260-34-2
15-66. HEATER WIRING HARNESS REPLACEMENT
THIS TASK COVERS:
b. Installation
a. Removal
lNITIAL SETUP
REFERENCES (TM)
APPLICABLE MODELS
TM 9-2320-260-10
M820, M820A1, M820A2
TM 9-2320-260-20
TEST EQUIPMENT
TM 9-2320 -260-34P-2
Multimeter (Appendix B, Item 115)
EQUIPMENT CONDITION
TOOLS
q External power source disconnected
General mechanic's tool kit
(TM 9-2320-260-10).
q Battery ground cable disconnected
(Appendix B, Item 1)
(TM 9-2320-260-20).
Tool kit, electrical (Appendix B, Item 106)
q Ceiling filler and side panels removed
MATERIALS/PARTS
(M820, M820A2) (para. 15-44).
Safety wire (Appendix D, Item 372)
q Ceiling removed (M820A1) (para. 15-36).
Electrical tape (Appendix C, Item 51)
CAUTION
Use care when replacing wiring harness. Excessive snagging or
pulling may cause damage to wiring harness.
a. Removal
NOTE
Tag wires, cables, and leads for installation.
1.
Remove twelve screws (5) and clamps (6) from van ceiling (1).
Disconnect two plugs (2) from heater (3).
2.
Remove two grommets (4) from van ceiling (1).
3.
Remove thermostat cover (12) from thermostat (10).
4.
Remove two screws (11) from thermostat (10) and control center box (8). Pull thermostat (10)
5.
forward.
Remove two screws (13) and wires (9) from thermostat (10) and remove thermostat (10) from control
6.
center box (8).
7.
Remove six screws (14) and cover (15) from load center (20).
Remove screw (16) and clamp (17) from mounting plate (18).
8.
Remove setscrew (24) and wire (25) from neutral bar (26).
9.
Remove screw (22) and wire (23) from 20-amp circuit breaker (21).
10.
NOTE
q Safety wire will be used to install new wiring harness. Do not
cut safety wire from spool until wiring harness has been pulled
through and proper length has been obtained.
q Safety wire must be attached to wires with electrical tape.
11.
Remove heater wiring harness (7) from van body (19).
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