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 TM 55-1905-220-14-11
5-69.
ENGINE ASSEMBLY - REMOVAL AND RUN-IN - MAINTENANCE INSTRUCTIONS
(Continued).
LOCATION
ITEM
ACTION
REMARKS
ENGINE RUN-IN INSTRUCTIONS (Cont)
8.
The engine should be run at this speed and
load for 10 minutes to allow sufficient time
for the coolant temperature to reach the
normal operating range. Record length of
time, speed, brake horsepower, coolant tem-
perature and lubricating oil pressure on the
Engine Test Report (see page 5-926).
9.
Run the engine at each speed and rating for
the length of time indicated in the Basic
Run-In Horsepower Schedule on page 5-919.
This is the basic Run-In. During this time
engine performance will improve as new parts
begin to "seat in". Record all required data.
(c) Basic Run-In Inspection
1.
While the engine is undergoing the Basic Run-
In, check each item indicated in Section "C"
of the Engine Test Report. Check for fuel oil
or water 1eaks in the rocker arm compartment.
2.
During the final portion of the Basic Run-In,
the engine should be inspected for fuel oil,
lubricating oil, and water leaks.
3.
Upon completion of the Basic Run-In and
Inspection, remove the load from the dynamom-
eter, 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
applicable tune-up procedure.
5-924
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