TM 5-2420-232-10
0016
THINGS TO REMEMBER WHILE PERFORMING PMCS
1.
Always do PMCS in the same order so it gets to be a habit. Once you have had some practice, you will spot anything
wrong in a hurry.
2.
When performing PMCS, take along the tools needed to make the check or service. Always take along clean wiping rags
(Item 18, WP 0033).
3.
Keep the machine and individual components clean. Dirt, grease, oil, and debris may conceal a serious problem. Clean as
you go. Use solvent (Item 2, WP 0033) on all surfaces. Use mild soap and water to clean rubber or plastic parts. Avoid
spraying water directly into engine air intakes.
4.
Check all attaching hardware for looseness. Tighten loose hardware before operating machine. For hardware that requires
staking, lockwires, or nylon fasteners, notify Field Maintenance.
5.
Look for loose or chipped paint, rust, or gaps where parts are welded together. Report all bad welds to Field Maintenance
for repair before operating the machine.
6.
Look for cracked or broken electrical insulation, bare wires, and loose or broken connectors. Tighten loose connectors and
ensure wires are in good shape before operating the machine.
7.
Look for fluid leaks from hoses and fittings. Check for wear and damage to hoses and fluid lines and be sure clamps and
fittings are tight. Report all stains, wet spots, and leaks to Field Maintenance.
8.
Check all fluids for contamination. If contamination such as rust, water, or sediment is found in the fluid, notify Field
Maintenance before operating the machine.
9.
Perform PMCS more often to compensate for continuous operation and abnormal conditions such as high or low temper-
atures, prolonged periods of high rate operation, continued operation in sand, dust, or exposure to moisture or salt which
may cause excessive wear or damage.
10. Corrosion Prevention and Control (CPC) of Army materiel is a continuing concern. It is important that any corrosion
problems with this item be reported so that the problem can be corrected and improvements can be made to prevent the
problem in future items.
11. While corrosion is typically associated with rusting metals, it can also include deterioration of other materials such as rub-
ber and plastic. Unusual cracking, softening, swelling, or breaking of these materials may be a corrosion problem.
12. If a problem is identified, it can be reported using DA Form 2404 or DA Form 5988-E. Use of key words such as "corro-
sion," "rust," "deterioration," or "cracking" will ensure that the information is identified as a CPC problem.
13. Classification of Fluid Leaks. The following definitions concern types/classes of fluid leakage. Each operator must be
familiar with these definitions in order to determine whether or not the machine is mission capable:
WARNING
Do not operate machine with any class of fuel leak. Fuel may ignite causing injury or death to
personnel.
CAUTION
Equipment operation is allowable with minor leakage (Class I or II). Consideration must be given
to the fluid capacity in the item/system being checked/inspected. When in doubt, notify the
commander. When operating with Class I or Class II leaks, continue to check fluid levels as
required in your PMCS. Do not operate machine with any Class III leaks. Report Class III leaks to
Field Maintenance. Failure to follow this caution may result in damage to equipment.
0016-2
