ARMY TM 9-2815-257-24
AIR FORCE TO 38G1-128-2
MARINE CORPS TM 10155A/2815-24/3
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. This section lists PMCS
required for the engine assembly and authorized for the unit maintenance level.
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 3-1. 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.
3-8. PMCS PROCEDURES.
Your Preventive Maintenance Checks and Services, Table 3-1, lists inspections and care required to keep
your engine assembly in good operating condition.
a. Item No. Column. The Item No. column in Table 3-1 lists each check / service in chronological
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.
Location Column. The Location: Item to Check / Service column directs maintenance personnel
to the general area on the engine where the check or service is to be performed.
d. Procedure Column. The Procedure column of Table 3-1 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).
e. Not Fully Mission Capable If Column. The Not Fully Mission Capable If column in Table 3-1 tells
you when your engine assembly is non-mission capable and why the engine assembly cannot be used.
f. If the engine assembly does not perform as required, perform unit level troubleshooting, Section V.