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 TM 55-1905-219-14-10
5-4. MAIN PROPULSION ENGINE/MARINE GEAR - REMOVAL AND RUN-IN
MAINTENANCE INSTRUCTIONS. (Continued).
LOCATION
ITEM
ACTION
REMARKS
RUN IN (Cont)
5
The lubricating oil temperature reading must be taken while the engine is
operating at full load and after it has been operating long enough for the
temperature to stabilize. This temperature should be recorded and should be
within the specified range.
6
The lubricating oil pressure should be recorded in psi after being taken at
engine speeds indicated in the Operating C nditions, Chapter 3.
o
7
The fuel oil pressure at the fuel manifold inlet passage should be recorded
and should fall within the specified range. Fuel pressure should be recorded
at maximum engine rpm during the Final Run-In.
8
Check the air box pressure while the engine is operating at maximum speed
and load. This check may be made by attaching a suitable gage (0-15 psi)
or manometer (15-0-15) to an air box drain or to a hand hole plate prepared
for this purpose. If an air box drain is used as a so rce for this check, it must
u
be clean. The air box pressure should be recorded in inches of mercury.
9
Check the crankcase pressure while the engine is operating at maximum
run-in speed. Attach a manometer, calibrated to read in inches of water, to
the oil level dipstick opening. Normally, crankcase pressure should decrease
during the run-in indicating that new rings are beginning to " seat-i n" .
10
Check the air inlet restriction with a water manometer connected to a fitting
in the air inlet ducting located 2" above the air inlet housing. When
practicability prevents the insertion of a fitting at this point, the manometer
may be connected to a fitting installed in the 1/4" pipe tapped hole in the
engine air inlet housing. If a hole is not provided, a stock housing should be
drilled, tapped and kept on hand for future use.
5-32
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