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 TM 55-1905-223-24-3
(4) Fill the crankcase with clean oil.
(5) Flush and fill the cooling system.
b. Inspecting the Generator Set.
(1) Engines in storage 6 months or less must have the adjustment of the injectors, valves, and the belts
checked. Also check the oil filters, air filters, connections, and the torque of the cylinder head
capscrews.
(2) When an engine has been in storage for 6 months or more, the following inspection procedure must
be followed:
(a) Flush the fuel system with fuel oil until the fuel system is clean.
(b)
Remove the plug from the oil filter head and run hot, light mineral oil through the oil
passages. Rotate the engine three or four times during the flushing operation.
(c) Remove all screens and make sure they are clean before the engine is started.
(3) If a generator has been in storage for over 6 months, or has been exposed to high humidity or
temperature changes that could cause condensation, the insulation resistance should be checked
before putting the unit into service.
(a) Check all internal wiring connections for tightness.
(b) Check the resistance of the main stator windings (paragraph 3-12).
(c) If the resistance reading is not satisfactory, dry the generator windings.
1
Direct the warm air from one or two fan heaters into the openings at either end of the
generator.
2 Make sure the air flows over the windings through the generator.
3 Do not exceed 176 (80 ) air temperature when drying the generator.
F
C
(d)
After 2 hours of drying, measure the main stator resistance again. If resistance is
satisfactory, put the unit into service. If the resistance is still too low, repeat the drying
procedure.
c. Precautions Before Starting.
(1) Too much oil in the combustion chamber can cause a hydraulic lock. Damage to the engine will
occur if it is started before the oil is removed.
(2) When returning an engine to service from storage, make sure all foreign matter is removed from the
screens and strainers.
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