TM 9-2320-280-20-2
4-40. TRANSMISSION CIRCUIT BREAKERS AND JUMPER LEADS REPLACEMENT (4L80-E)
This task covers:
a. Removal
b. Installation
INITIAL SETUP:
Applicable Models
Manual References
M997A2, M1025A2, M1035A2,
TM 9-2320-280-24P
M1043A.2, M1045A2, M1097A2
Equipment Condition
Tools
Battery ground cables discomected (para. 4-73).
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
NOTE
Prior to removal, tag leads for installation.
a. Removal
1.
2.
3.
4.
5.
6.
7.
Remove nut (6), capscrew (1), cable (2), three circuit breaker-to-battery leads (3) and cable (4) from
terminal clamp (5).
NOTE
The coverplate on M1025A2 and M1043A2 vehicles has four
capscrews and washers.
Remove five capscrews (8), two washers (10), and coverplate (7) from “B” pillar (9).
Remove three screws (20) and circuit breaker-tubattery leads (3) from circuit breakers (21), (16), and (15).
Remove two screws (12) and circuit breaker-to-relay leads (13) from circuit breakers (16) and (21).
Discomect leads (13) from relay lead (19) and remove leads (13).
Remove screw (12) and circuit breaker-to-harness lead (14) from circuit breaker (15).
Remove two nuts (11), capscrews (18), washers (17) and circuit breaker (21) from coverplate (7).
Repeat step 7 for circuit breakers (15) and (16).
b. Installation
1. Install circuit breaker (21) on coverplate (7) with two washers (17), capscrews (18), and nuts (11).
Repeat step 1 for circuit breakers (15) and (16).
2. Install circuit breaker-to-harness lead (14) on circuit breaker (15) with screw (12).
3. Connect leads (13) to relay lead (19).
4. Install two circuit breaker-to-relay leads (13) to circuit breakers (16) and (21) with screws (12).
5. Install three circuit breaker-to-battery leads (3) on circuit breakers (15) (16), and (21) with screws (20).
6. Install coverplate (7) to “B” pillar (9) with two washers (10) and five capscrews (8).
7. Install cable (4), three circuit breaker-to-battery leads (3) and cable (2) to terminal clamp (5) with
capscrew (1) and nut (6).
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