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 TM 55-1905-223-24-1
e.
Remove chocks from resilient mounted components.
2-5. Preliminary Servicing, Adjustment and Operation of Newly Installed Equipment.
a. New and Rebuilt Engine Break-In. The way a new engine is operated during the first 100 hours of
service will have an important effect on the life of the engine and its parts. Even though all engines are run on
a dynamometer for several hours before they leave the factory, an additional period of careful operation is
required.
(1)
Perform pre-starting procedures (paragraph 2-5(b)).
(2)
Avoid operation for long periods at engine idle speeds, or at maximum horsepower levels in
excess of 5 minutes.
(3)
Develop the habit of watching engine instruments closely during operation and reduce speed if oil
temperature reaches 250 (121 ) or coolant temperature exceeds 190 F (88 ).
F
C
C
(4)
Check oil level each 10 hours during break-in period.
b.
Pre-Starting Procedures. Follow these procedures when starting a new or rebuilt egine for the first
n
time:
(1)
Prime the Fuel System.
(a)
Fill fuel filter with clean diesel fuel oil.
(b)
Remove suction line from fuel pump and prelubricate gear pump with 2 to 3 oz (50 to 60 cc)
of clean lubricating oil.
(c)
Check fuel tanks. There must be an adequate supply of clean diesel fuel in the tanks.
(d)
If injector and valve or other adjustments have been disturbed by any maintenance work,
check to be sure they have been properly adjusted before starting the engine.
CAUTION
Do not attempt to prime engine lubricating system from bypass filter.
(2)
Priming the Lubricating System. The engine is primed automatically by an external
electrically driven pump. However, in the event of problems in the self priming system, the
following procedures should be performed before starting the engine:
(a)
Remove oil inlet line from the turbocharger and prelubricate bearing with 2 to 3 oz (50 to
60 cc) of clean lubricating oil. Reconnect oil supply line.
2-2
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