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4-9.
VENT ASSEMBLY. (Cont’d)
NOTE
An O-ring that has absorbed oil or hydrocarbon fuel may expand when removed from its groove. If O-ring does not fit
easily back into its groove, do not try to reinstall it immediately. Wait until it has dried out, or install a new O-
ring.
(2) Inspect all parts for cracks, dents, breaks, or wear. If any parts are no longer serviceable, replace before
reassembly.
(3) Check that vent hole in relief valve is clear.
c.
Reassembly.
(1) Place O-ring into groove in tank fitting.
(2) Place flanged adapter on tank fitting. Rotate until holes in flange are in line with tapped holes in fitting.
Place washers over bolts. Place bolts through holes in flange. Using wrench, tighten bolts.
(3) Place relief valve with flame arrestor into vent standpipe until standpipe contacts O-ring gasket at top of
flame arrestor. Turn relief valve clockwise until tight.
(4) Insert vent standpipe into coupling and turn standpipe clockwise until tight.
(5) Insert coupling gasket into female coupling. Check that cam lever arms of coupling are in an outward
position. Place female coupling onto flanged adapter. Pull cam arms inward until they lock.
4-14
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