AIR VENT VALVE AND DRAIN TUBE ASSEMBLY REPLACEMENT.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section
Filter-separator removed from system. Refer to para
III, Item 1)
Air vent valve open. Refer to para 2-6.
Thread Sealant (Appendix
F, Section II,
General Safety Instructions
· Do not smoke within 100 feet of filter-separator.
· Fuel is toxic to skin, eyes, and respiratory tract.
· Sealant is toxic to skin, eyes, and respiratory tract.
Refer to figure 4-6.
Remove vent tube assembly (1) from air vent valve (2) by unscrewing adapter nut (3) while holding
adapter (4) with wrench to keep it from turning.
Remove adapter (4) from air vent valve (2).
Remove air vent valve (2) from tank (5).
Do not apply excessive pressure with fingers when cleaning or applying sealant onto threads.
Sharp threaded edges could cause injury.
Apply thread sealant to inlet pipe threads of air vent valve (2) and install into tank (5).
In sure outlet port of air vent valve points towards rear of filter-separator.
Apply thread sealant to threads on adapter (4) and install adapter (4) in outlet port of air vent valve (2).
Position sleeve on vent tube assembly (1) against adapter (4) and secure with nut (3).