ARMY
NAVY
4-53.
(cont)
a.
TM5-6115-612-12
AG-320B0-0MM-000
LINES AND FITTINGS (EXTERNAL).
Inspection.
(1) Loosen turnlock fasteners and remove
engine housing access cover and plenum access
cover.
(2) Inspect oil lines and cooler lines for wear
due to chafing or rubbing. Inspect fittings for evidence
of leakage or damage. Replace damaged lines and
fittings as necessary.
(3) Inspect flare fittings for damage or leak-
age. Inspect T-fittings for damage or leakage. Tighten
or replace as necessary.
(4) Install engine housing and plenum
access covers. Secure with turnlock fasteners.
b. Removal.
(1) Drain oil from lubrication system (para-
graph 4-8a).
(2) To prevent tvvisting or damaging tubing,
use two wrenches. Hold fitting stationary with one
wrench while loosening flare nuts with other wrench.
Remove damaged lines and fittings as necessary.
c.
Installation.
(1) To prevent cross-threading and damage
to fittings or nuts, start all flare nuts on fittings by
hand.
(2) To prevent twisting or damaging tubing,
use two wrenches. Hold fitting stationary with one
wrench while tightening flare nuts with other wrench.
Install new lines and fittings as necessary. After
installing new lines, ensure that tubes will not rub or
vibrate against engine or housing during operation.
(3) Fill reservior (paragraph 4-8 b).
Change 2
4-54. OIL COOLER. Maintenance of the oil cooler
(figure 4-34) is limited to inspection and service. Oil is
pumped from the gearbox reservoir, through the low
oil pressure switch, and then to the oil cooler where it
is cooled. The oil then flows through the return line
back to the reservoir.
a. Inspection.
(1) Loosen turnlock fasteners and remove
engine housing and plenum access covers.
(2) Ensure that oil cooler supply line is
securely connected to low oil pressure switch (figure
4-7).
(3) Ensure that oil cooler return line is
securely connected to reservior return port (figure
4-7).
WARNING
To prevent injury, ensure that handbrake is set
and wheels are chocked while working under
generator set.
(4) Set handbrake and chock both wheels.
(5) Remove screws (1, figure 4-34), washer
(2), and oil cooler housing (3).
(6) Inspect oil cooler fins for bends or tears.
Straighten bent fins. If fins are torn, refer to direct
support for maintenance.
(7) Ensure that oil cooler supply and return
lines (7) are securely connected.
4-110
