OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
October 15, 2013
Chapter 2-1
Page 11
i) “F” Checks and Operations (2000 Hours or 2 Years).
(1) Engine.
a
Check Vibration Damper.
Check vibration damper for looseness, wobble, chunking and streaking. Also verify the hub
bolts are tightened to the engine manufacturer’s specifications.
Refer to the engine manufacturer’s operations and maintenance manual for assistance and
the most update to date information.
b
Check Charge-Air-Cooler and Radiator Systems.
(i) Check for damaged hoses and loose or damaged hose clamps.
(ii) Check the radiator for leaks, damage, and build up of dirt in the fins. Clean or replace as
necessary.
c
Flush cooling system and change coolant.
j) Seasonal Maintenance Checks Spring/Fall (Engine).
(1) Check Fan Mounting.
a
Check fan to be sure it is securely mounted.
b
Check for fan wobble and/or broken/cracked blades.
c
Check fan hub and crankshaft pulley for secure mounting.
(2) Check cooling system each spring and fall. Clean if necessary.
(3) Check All Hoses.
In addition to daily checks of hoses for leaks, inspect hoses thoroughly each time the cooling
system is cleaned and serviced.
Inspect for signs of deterioration and collapse. Inspect for cracks and cuts. Inspect for cutting
and deformation caused by hose clamps. Replace hoses as required.
(4) Check thermostat and seals each fall when cooling system is serviced.
k) Lamps Circuit breakers, and Fuses.
(1) Check all lamps daily.
(2) Check circuit breakers and fuses as required.
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