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TM 10-4320-351-14
5.5 REPAIR THREE-INCH VALVED UNISEX COUPLING. (Refer to figure 5-7.)
This task consists of:
a. Disassembly
b. Inspection
c. Assembly
INITIAL SET-UP:
Tools:
Material/Part Required:
Screwdriver, Cross Tip, Size 2
Solvent, Dry Cleaning
(Appendix B, Section III, Item 2)
(Appendix F, Section II, Item 2)
Key, Socket Head Screw, 7/64 in.
Cloth, Lint Free (Appendix F, Section II, Item 13)
(Appendix B, Section III, Item 2)
Petrolatum (Appendix F, Section II, Item 10)
Key, Socket Head Screw, 9/64 in.
Grit Paper (Appendix F, Section II, Item 11)
(Appendix B, Section III, Item 2)
O-Ring (Appendix I, Item 47)
Key, Socket Head Screw, 7/32 in.
O-Ring (Appendix I, Item 50)
(Appendix B, Section III, Item 2)
Bushing (Appendix I, Item 5)
Punch (Drift Pin)
Bushing (Appendix I, Item 7)
(Appendix B, Section III, Item 2)
Seal (Appendix I, Item 6)
Pick (or machinist's scribe)
O-Ring (Appendix I, Item 46)
(Appendix B, Section III, Item 2)
Chemical and Oil Protective Gloves
(Appendix B, Section III, Item 2)
Goggles
(Appendix B, Section III, Item 2)
General Safety Requirements:
Equipment Condition:
Three inch valved unisex coupling detached
WARNING
(para. 4.11.2)
·
Fuels are toxic and flammable. Do not get on person
or clothing. Do not use near open flame. Area
should be well ventilated.
·
Using dry cleaning solvents incorrectly can cause
Injury or even death.
·
Fuel is flammable. Do not smoke.
a.
Disassembly.
WARNING
Rubber gloves should be worn when handling fuel system components due to
toxic effects of some additives.
(1)
Unthread dust cap attaching cable (1) from split rings (2).
(2)
Place handle assembly (3) in closed position, rotate and remove dust cap (4) from coupling, then place
handle assembly (3) in open position
(3)
Remove screws (5) and handle assembly (3).
(4)
If handle assembly (3) requires repair, remove socket head screw (6), spring (7), and knob (8) from handle
(9).
(5)
Hold valve ball (10) with thumb and remove socket head screw (11) from handle-side shaft (12).
5-19
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