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TM10-4930-239-12&P
(9) Remove eight screws (35), eight flat washers (36), eight lock washers (37), eight nuts (38), gasket (39), and
tee (29) from gate valve (40). Discard gaskets (39) and lock washers (37).
(10) Remove eight screws (41), eight flat washers (42), eight lock washers (43), eight nuts (44), gasket (45), and
gate valve (40) from tee (18). Discard gaskets (45) and lock washers (43). Refer to paragraph 4-19 for repair of gate
valve.
(11) Remove split ring (46) from coupling half (9).
(12) Remove split ring (47) from coupling half (12).
b. Clean.
(1) Remove all build up of dirt, oil, and debris from all mating surfaces and clamping areas.
WARNING
DO NOT breath dry cleaning solvent vapors for long periods of time or allow
solvent to come into contact with skin for an extended time. DO NOT use solvent
near open flames or excessive heat.
(2) Clean all metallic parts with a clean soft cloth (Appendix E, Item 1) or a medium bristle brush (Appendix E, Item
2), and cleaning solvent (Appendix E, Item 3).
(3) Allow parts to dry.
c. Inspection.
(1) Inspect all metal parts for cracks, corrosion, or broken fittings.
(2) Examine all coupling half gaskets for cracks, tears, or nicks.
(3) Check gate valve assembly for crack surfaces, bent handwheel and for smooth handwheel operation.
d. Assembly.
(1) Install split ring (47) onto coupling half (12).
(2) Install split ring (46) onto coupling half (9).
(3) Install gate valve (40), new gasket (45), eight nuts (44), eight new lock washers (43), eight flat washers (42),
and eight screws (41) onto tee (18).
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