Symbols
Time Intervals
Hours
Calendar
BR
50-150
None
AR
As Required
None
A
10 Hours
Daily
B
250 Hours
3 Months
C
500 Hours
6 Months
D
1000 Hours
1 Year
E
1500 Hours
1-½ Years
F
2000 Hours
2 Years
S
Seasonally
Spring and/or Fall
Symbols and Time Intervals
Figure 2
3.
Inspection/Check
a. General
Inspections, checks, and maintenance are described in general here. More specific and detailed
information contained in 2-2 and 2-3, will be referenced when applicable.
b. “AR” Checks and Operations (As Required)
(1)
Engine
a.
Change air cleaner.
A definite time schedule for changing the air cleaner cannot be established. This filter should
not be washed more then six times or retained for more than one year’s service, which ever
comes first.
b.
Tighten manifold, muffler, and exhaust pipe attaching hardware as required.
(2)
Electrical System (12-V DC)
a.
Check battery terminals
•
Anytime the battery 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-and-connector
cleaning tool. Coat posts and connectors with a light film of petroleum lubricant before
reconnecting cables.
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)
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 Cummins Operations Manual for assistance.
(2)
Change fuel filter elements. Metal shavings from the new fuel tank can clog the filter. See 2-2,
Para. 4 for details.
(3)
Change crankcase oil. New engines often release metal shavings more frequently. Therefore
the crankcase oil must be changed as a precautionary measure. See 2-2, Para. 2, d, (4) for
instructions.
OM-2084 / Operation and Maintenance Manual
90CU24 / Series 500392 Generator Sets
Chapter 2-1
Page 4
