TM 1-1740-204-13&P
f.
Carefully remove the O-ring (11) from the groove in the check valve body (5). Remove the O-ring (12) from
the end of the check valve poppet (10).
g.
Examine all rubber parts for contamination, nicks, cuts and abrasions. Examine the spring. If necessary,
replace all components with repair kit components. Refer to Appendix C -RPSTL for kit part numbers.
NOTE
Complete the installation of this check valve before proceeding with the inspection of the next
one.
h.
Assemble the check valve parts (8) through (12) as shown in the outlet check valve illustration. Press O-ring
(12) onto the groove of check valve poppet (10). Press O-ring (11) with fingers into the groove of the check valve body
(5). The spacer (8) slides into the cavity of the check valve body (5).
i.
Insert these parts into the pump body (7) as shown. Pivot the combination tee and coupler assembly (6) with
the check valve body (5) attached. Tighten and orient as illustrated.
j.
Insert flare fitting (4) with Teflon tape (D1) or sealant (D2) into the tee and coupler assembly (6) and tighten.
k.
Reconnect tubing (2) and tighten the flare fittings of tubing (2). Leave tubing (3) off for the lower check valve
inspection in paragraph 4-14.4.
I.
Reinstall the high pressure relief valve (1) with Teflon tape (D1) or sealant (D2) and orient as shown.
m.
Continue with the inspection of the lower outlet check valve.
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