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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)
3
Upon completion of the Basic Run-In and Inspection, remove the load from the
dynamometer and reduce the engine speed gradually to idle and then stop the engine.
(d)
Inspection After Basic Run-In
The primary purpose of this inspection is to provide a fine engine tune-up. First, tighten the cylinder head
and rocker arm shaft bolts to the proper torque. Next, complete the tune-up procedure.
(e)
Final Run-In
1
After all of the tests have been made and the Engine Test Report is completed through
Section (d), the engine is ready for final test. This portion of the test and run-in
procedure will assure the engine owner that his engine has been rebuilt to deliver
factory rated performance at the same maximum speed and load which will be
experienced in the installation.
2
If the engine has been shut-down for one hour or longer, it will be necessary to have a
warm-up period of 10 minutes at the same speed and load used for warm-up in the
Basic Run-In. If piston rings, cylinder liners or bearings have been replaced as a result
of findings in the Basic Run-In, the entire Basic Run-In must be repeated as though the
run-in and test procedure were started anew.
3
All readings observed during the Final Run-In should fall within the range specified in
the Operating Conditions in Chapter and should be taken at full load unless otherwise
specified. Following is a brief discussion of each condition to be observed.
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 should be within the specified range.
5-31
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