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 TM 55-1905-220-14-10
5-33. ENGINE ASSEMBLY - REMOVAL AND RUN IN - MAINTENANCE
INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
ENGINE RUN-IN INSTRUCTIONS (Cont)
4. The engine water temperature should be taken
during the last portion of the Basic Run-In at
full load. It should be recorded and within
the specified range.
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 re-
corded in psi after being taken at engine
speeds indicated in the Operating Conditions,
Chapter 3.
7. The fuel oil pressure at the fuel manifold
inlet passage should be recorded and should
fall within the specified range. Fuel pres-
sure 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 be attaching a suitable
gage (0-15 psi) or manometer (15-0-15) to an
air box drain or to a hand hole plate pre-
pared for this purpose. If an air box drain
is used as a source for this check, it must
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-in".
5-536
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