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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)
6. Engine governors in most cases must be reset
at the maximum full-load speed designated for
the run-in. If a governor is encountered
which cannot be adjusted to this speed, a
stock governor should be installed for the
run-in.
7. After checking the engine performance at idle
speed and being certain the engine and dyna-
mometer are operating properly, increase the
engine speed to half speed and apply the load
indicated on the Basic Run-In Horsepower
Schedule on page 5-527.
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 nor-
mal operating range. Record length of time,
speed, brake horsepower, coolant temperature
and lubricating oil pressure on the Engine
Test Report on page 5-530.
9. Run the engine at each speed and rating for
the length of time indicated in the Basic
Run-In Horsepower Schedule. This is the
Basic Run-In. During this time engine per-
formance will improve as new parts begin
to "seat in". Record all of the 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 leaks in the rocker arm compart-
ment.
2. During the final portion of the Basic Run-In,
the engine should be inspected for fuel oil,
lubricating oil, and water leaks.
5-534
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