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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)
14. Refer to the Basic Run-In Horsepower Schedule
and determine the maximum rated brake horse-
power and the full-load speed to be used
during the Final Run-In. Apply the load thus
determined to the dynamometer. If a hydraulic
governor is used, the droop may be adjusted at
this time by following the prescribed proce-
dure. The engine should be run at this speed
and load for 1/2 hour. While making the Final
Run-In, the engine should develop, within 5%,
the maximum rated brake horsepower indicated
for the speed at which it is operating. If
this brake horsepower is not developed, the
cause should be determined and corrections
made.
15. When the above conditions have been met, adjust
the maximum no-load speed to conform with that
specified for the particular engine. This
speed may be either higher or lower than the
maximum speed used during the Basic Run-In.
This will ordinarily require a governor adjust-
ment.
16. All information required in Section "E", Final
Run-In, of the Engine Test Report should be
determined and filled in. After the prescribed
time for the-Final Run-In has elapsed, remove
the load from the dynamometer and reduce the
engine speed gradually to idle speed and then
stop the engine. The Final Run-In is complete.
(f) Inspection After Final Run-In
After the Final Run-In and before the Engine Test
Report is completed, a final inspection must be
made. This inspection will provide final assur-
ance that the engine is in proper working order.
During this inspection the engine is also made
ready for any brief delay in delivery or instal-
lation which may occur. This is accomplished by
rust-proofing the fuel system. Also, a rust
inhibitor should be introduced into the cooling
system.
5-538
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