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 TM 55-1905-220-14-10
5-4. MAIN PROPULSION ENGINE/MARINE GEAR - REMOVAL AND RUN-IN
MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
RUN IN (Cont)
15
Refer to the Basic Run-In Horsepower Schedule and deter- mine the maximum rated
brake horsepower 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 procedure. 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.
16
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 adjustment .
17
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 assurance that the engine is in proper working order. During this inspection,
the engine is also made ready for any brief delay in delivery or installation which may occur. This is
accomplished by rust-proofing the fuel system. Also, a rust inhibitor should be introduced into the cooling
system.
5-34
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