TM 9-2330-275-14&P
4-19. FRONT DISTRIBUTION BOX MAINTENANCE (M689 AND M840) (Con’t).
1.
Remove retaining nut (10) from rear of connector (4).
2.
Tag and disconnect wires (15) from connectors (4 and 20).
3.
Remove four nuts (14), terminal lugs (9), screws (1), Iockwashers (2), cover (3), connector (4), bushing (5), and
gasket (8) from cover (17). Discard Iockwashers, bushing, and gasket.
4.
Remove two nuts (18), screws (19), Iockwashers (18), and connector(20) from cover (17). Discard lockwashers.
c.
CLEANING AND INSPECTION
WARNING
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective goggles
and gloves, and use only In a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive heat.
The solvent’s flash point is 100°F-138°F (38°C-59°C). If you become dizzy while
using cleaning solvent, immediatety get fresh air and medical help. If solvent contacts
eyes, Immediately wash your eyes and get medical aid.
1.
Clean metal parts with dry cleaning solvent.
2.
Inspect metal parts for damage.
3.
Inspect wiring harness for broken wires end damaged Insulation.
d.
ASSEMBLY
1.
Install connector (20) to cover (17) with two screws (19), new Iockwashers (18), and nuts (18).
2.
Install new gasket (6), new bushing (5), connector (4), cover (3), and terminal lugs (9) to cover (17) with four
screws (1), new Iockwashers (2), and nuts (14).
3.
Position retaining nut (10) over wires (15) and connect wires to connectors (4 and 20).
4.
Install retaining nut (10) to rear of connector (4).
e.
INSTALLATION
1.
Install distribution box (11) to front dolly with four washers (12) and screws (13).
2.
Install cover (17) to distribution box (11) with ten new Iockwashers (7) and screws (8).
FOLLOW-ON TASKS
Connect intervehicular cable to distribution box and towing vehicle (pare 2-14).
Check operation of lights.
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