TM 5-4320-302-14
Table 4-1. Organizational Preventive Maintenance Checks and Services
W-Weekly
Q-Quarterly
M-Monthly
S-Semiannually
INTERVAL
ITEM
NO.
W
M
Q
S
ITEM TO BE INSPECTED
PROCEDURES
4
Fuel Feed
Pump
WARNING
Severe burns, illness, or death may result if per-
sonnel fail to handle diesel fuel oil properly. Ob-
serve the following precautions:
· Do not inhale vapor.
· Do not handle fuel near open flame, sparks, or
excessive heat.
· Be certain fuel lines and connections are
secure.
· Work in a well-ventilated area.
Death or severe injury might result when com-
pressed air is used to blow dirt from skin or
clothing. Air entering body openings is extremely
dangerous. Compressed air used for cleaning shall
not exceed 100 psi (690 kPa). Use goggles or
face shield for eye protection. Do not direct air-
stream against skin.
Check fuel feed pump. Unthread screw from fuel feed pump.
Remove, as an assembly, screw, washer, and cover. Separate
screw from washer. Remove gasket and strainer. Discard
gasket and washer.
Using diesel fuel oil and a soft-bristled brush, clean strainer,
cover, and screw. If deposits in strainer cannot be removed,
discard strainer. Dry with low pressure compressed air.
Operate engine prime T-handle. Check proper operation of
fuel feed pump diaphragm. Check diaphragm for leaks.
If diaphragm leaks, replace fuel feed pump by removing screws
and washers. Remove and discard O-seal. Install new O-seal.
Install new fuel feed pump. Install screws and washers.
Tighten screws securely.
Install strainer onto fuel feed pump. Place gasket onto sealing
surface of pump. Install screw through washer and cover.
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