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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
A preliminary valve clearance adjustment must be made before the engine is started.
4
A preliminary injector timing check must be made before starting the engine.
5
Preliminary governor adjustments must be made.
6
Preliminary injector rack adjustment must be made.
(b)
Basic Engine Run-In
1
The operator should be observant at all times, so that any malfunction which may
develop will be detected. Since the engine has just been reconditioned, this run-in will
be a test of the workmanship of the service- man who performed the overhaul. Minor
difficulties should be detected and corrected so that a major problem will not develop.
2
After performing the preliminary steps, be sure all water valves, fuel valves, etc. are
open. Also inspect the exhaust system, being sure that it is properly connected to the
engine. Always start the engine with minimum dynamometer resistance.
3
After the engine starts, if using a water brake type dynamometer, allow sufficient water,
by means of the control loading valves, into the dynamometer absorption unit to .show
a reading of approximately 5 lb-ft on the torque gage (or 10-15 HP on a horsepower
gage). This is necessary, on some units, to lubricate the absorption unit seals and to
protect them from damage.
4
Set the engine throttle at idle speed, check the lubricating oil pressure and check all
connections to be sure there are no leaks.
5-29
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