ARMY TM 9-6115-639-13
AIR FORCE TO 35C2-3-386-51
MARINE CORPS TM 10155A-13/1
Section IV. UNIT PREVENTIVE MAINTENANCE CHECKS
AND SERVICES (PMCS)
Unit Preventive Maintenance Checks and Services (PMCS) means systematic caring, inspecting, and
servicing of equipment to keep it in good condition and to prevent breakdowns to ensure that the generator set is
ready for operation at all times. It must be inspected so that defects can be discovered and corrected before they
result in damage or failure. This section lists PMCS required for the generator set and authorized for the unit
a. Be sure to perform your PMCS in the same order, so it gets to be a habit. Once you have had some
practice, you will quickly spot anything wrong.
b. Pay attention to WARNINGS, CAUTIONS, and NOTES.
c. Perform PMCS tasks at the intervals noted in Table 4-2. Do not skip PMCS intervals.
d. Use DA Form 2404 (Equipment Inspection and Maintenance Worksheet) to record any faults you
discover, unless you can fix them. You DO NOT need to record faults that you fix.
4-7. PMCS PROCEDURES.
Your Preventive Maintenance Checks and Services, Table 4-2, lists inspections and care required to
keep your generator set in good operating condition. It is set up so you can make your BEFORE (B)
OPERATION checks as you walk around the generator set.
a. Item No. Column. The Item No. column in Table 4-2 lists each check / service in chronological order.
b. Interval Column. The Interval column tells you when to do a certain check or service. Intervals are
based on operating hours, unless otherwise noted.
c. Location Column. The Location: Item to Check / Service column directs maintenance personnel to
the general area on the generator set where the check or service is to be performed.
d. Procedure Column. The Procedure column of Table 4-2 tells you how to do required checks and
services. Tolerances, adjustment limits, and instrument readings are included as applicable. When replacement
or repair of a component is required, the procedures column will direct you to the appropriate task.
Terms ready/available and mission capable refer to same status:
Equipment is on hand and ready to perform its combat missions. (See
DA Pam 738-750).