SECTION III: PREVENTIVE MAINTENANCE CHECKS AND SERVICES [PMCS]
TM 9-2350-256-20
personnel. All deficiencies and shortcomings will be recorded as well as corrective action taken of DA Form 2404
at the earliest posssible opportunity.
2 - 1 0 P R E V E N T I V E M A I N T E N A N C E C H E C K S A N D S E R V I C E S
The item number of Table 2-1 indicate the sequence of the PMCS. Perform at the intervals shown below:
Do your (Q) preventive maintenance once each 3 months.
Do your (S) preventive maintenance twice a year, or each 6 month.
Do your (A) preventive maintenance once each two years.
Do your (B) preventive maintenance once each two years.
Do your (H) preventive maintenance at the hour interval listed.
Do your (MI) preventive maintenance when the mileage/kilometers of the vehicle reaches the
amount listed
If something doesn't work, troubleshoot it with the instructions in the manual and notify your supervisor.
Always do your preventive maintenance in the same order, so it gets to be a habit. Once you've had some
practice, you'll spot anything wrong in a hurry.
If anything looks wrong and you can't fix it, write it down on your DA Form 2404. If you find something
seriously wrong, report it to Direct Support Maintenance as soon as possible.
Dry-cleaning solvent (P-D-680), used to clean parts, is potentially dangerous to personnel and
property. Do not use near open flame or excessive heat. Flashpoint of solvent is 138°F(59°C)
Keep it clean: Dirt, grease, oil and debris only get in the way and may cover up a serious problem. Clean as
work and as needed. Use dry-cleaning solvent (Appendix D, item 9) to clean metal surfaces. Use soap and water
to clean rubber or plastic material. Keep all air ducts clear of foreign matter. Special cleaning instructions are
given, when necessary, in the pertinent sections.
Bolts, nuts, and screws. Check that they are not loose, missing bent, or broken. You can’t try them all with a tool,
of course. but looking for chipped paint, bare metal, or rust around bolt heads. Tighten any that you find loose.
Welds: Looks for loose or chipped paint, rust, or gaps when parts are welded together. If you find a bad weld,
report it to Direct Support Maintenance.
Electric wires and connectors: Look for cracked or broken insulation, bare wires, and loose or broken connectors.
Tighten loose connections and make sure the wires are in good condition.
Hoses and fluid lines: Look for wear, damage, leaks. make sure clamps and fittings are tight. Wet spots
show leaks, of course, but a stain around a fitting or connector and also mean a leak. If a leak comes from a loose
fitting or connector, tighten it. I f something is broken or worn out, either corrector it or report it to Direct Support
Maintenance (see MAC chart).
It is necessary for you to know how fluid leaks affect the status of you equipment. The following are definitions
of the types/classes of leakage you need to know to be able to determine the status of your equipment. Learn and
be familiar with them and remember-When in doubt, notify you supervisor.
2-5
