Table 9-3. Preventive Maintenance Checks and Services for Electrical Power Systems(Continued)
B - Before
D - During
A - After
H - Hourly Interval
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A
Every 400 hours of operation or every 12
months (whichever comes first).
a. Redtag SAG on switchboard panel indi-
cation, "WARNING-DO NOT ACTI-
VATE- REPAIRS BEING MADE."
b. Check hoses and clamps. Replace hoses
if there is any evidence of deterioration to
hose material. Tighten clamps as neces-
Fuel Lift Pump
a. Notify Direct Support maintenance to
Chamberclean the fuel lift pump
Remove the fuel lift pump cover and
pulsator diaphragm by unscrewing
and removing the cover screw.
Clean the sediment chamber and
check the pulsator diaphragm for con-
dition. Replace if necessary.
Refit the pulsator diaphragm and
cover. Tighten the securing screw just
sufficiently to make a tight sealing
Vent and bleed the fuel system as fol-
Air must be vented from the fuel system
whenever any part of the system between
the fuel tank and injection pump has been
disconnected for any reason or if the system
has been emptied of fuel.
(a) Unscrew by two or three turns,
the vent plug on top of the fuel
filter cover (not the return pipe to
the tank). Later type fuel filters are
self venting and do not have a
vent plug. Air vent the fuel filter by
removing the excess fuel return
pipe, to the fuel tank, from the fil-
ter head. Operate the fuel feed
pump priming lever until diesel
fuel, free from air bubbles, issues
from the nonreturn valve. Refit
fuel return pipe.