OM-2226 / Operation and Maintenance Manual
60CU20 / Series 500062 / 400 Hz. Generator Set
May 2, 2013
Chapter 2-1
Page 4
b) “AR” Checks and Operations (As Required)
(1) Engine
a
Change Air Cleaner
Replace the air filter when the fault code meter shows the “air” code. These filters should not
be washed because washing breaks down the material inside the filters.
b
Check and tighten, as required, all coolant hose clamps, air intake hose clamps and exhaust
clamps. Check all coolant hoses, air intake hoses and exhaust pipes for leaks.
(2) Electrical System (12 VDC) – Check Battery Terminals
Anytime the compartment doors are opened for any reason, visually check battery cable
connectors and battery posts. If corrosion is observed, disconnect cables and clean battery posts
and connectors with a wire brush or special battery post-cleaning tool. Coat posts and
connectors with a light film of petroleum lubricant before reconnecting cables.
(3) Electrical (400 Hz System) -- Check Output Voltage
Check the output voltage and be sure it is set for 115 VAC ± 1 V. Adjustment can be made using
the fine adjustment located on the Voltage Regulator PC Board (REG).
c) “BR” Checks and Operations (Break-In Period, Once After 50-150 hrs.)
The following procedures are precautionary measures taken on most new engines. If a problem
occurs with any of the following issues, be sure to recheck it after the next 50-150 hours.
(1) Engine
a
Check for leaks and correct. This involves an overall inspection of the engine and may
require some maintenance if leaks are found. Refer to the engine manufacturer’s operations
manual for assistance.
b
Change all fuel filter elements. Metal shavings from the new fuel tank can clog the filter.
c
Change crankcase oil. New engines often release metal shavings more frequently.
Therefore, the crankcase oil must be changed as a precautionary measure.
d
Change oil filter element. The oil filter should be changed with the oil.
e
Check engine and generator mounts to ensure they are properly installed and they have not
worked loose. (Torque is set at 122 N-m, 90 ft-lb.).
f
Check coolant additive concentration. Refer to the engine manufacturer’s operations manual
for assistance.
g
Steam clean the engine to free it of oil and dirt to prevent uneven engine cooling “hot spots”.
The oil and dirt can also fall into the engine and fuel system when covers are removed during
repair work.
h
Inspect the water pump weep hole for indication of a steady leak. If a steady flow of coolant
or oil is observed, replace the water pump with a new or rebuilt unit. Refer to the engine
manufacturer’s operations manual for assistance.
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