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
When installing a replacement injector
remember to include also a new cop-
per seating washer. These are special
washers and ordinary washers cannot
be used for this purpose. The recess
in the cylinder head, the faces of the
washer, and the corresponding face
of the nozzle holder cap must be per-
fectly clean to ensure a leakproof seal.
The importance of injectors being
seated squarely and secured with the
correct torque cannot be emphasized
too strongly. Even a slight "canting" of
the injector can result in fouling and
distortion of the nozzle and needle
valve. This canting can also result in
leakage between injector and cylinder
head, with a resultant engine misfire.
Torque-To ensure squareness and
free entry of the nozzle into its bore,
the securing nuts must be tightened
evenly until a torque of 12 Ib/ft (1.7
Nm) is attained. Overtightening of
these securing nuts can result in a
fractured injector flange and/or a
fouled nozzle needle valve.
c. Request Direct Support maintenance
support to examine and service acces-
sory equipment, fuel injector pump, alter-
nator, starter, seawater pump, heat
exchanger, engine oil cooler, and coolant
Service engine crankcase filter system.
Remove system and disassemble.
Clean all components except filter ele-
Reassemble with new filter element
and all new connecting hoses.