GENERAL PMCS PROCEDURES.
Always perform PMCS in the same order so it gets to be a habit. Once youve had some practice,
youll spot anything wrong in a hurry. If any deficiency is discovered, perform the appropriate troubleshooting task
in Section V of this chapter. If any component or system is not serviceable, or if the given service does not correct
the deficiency, notify your supervisor.
Before performing preventive maintenance, read all the checks required for the applicable interval
and prepare all tools needed to make all checks. Have several clean rags (Item 15, Appendix F) handy. Perform
ALL inspections at the applicable interval.
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective gog-
gles and gloves, and use only in a well-ventilated area. Avoid contact with skin,
eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open flame or
excessive heat. The solvents flash point is 100°F-138°F (38°C-59°C). If you become
dizzy while using cleaning solvent, immediately get fresh air and medical help. If
solvent contacts eyes, immediately wash your eyes and seek medical attention.
Keep It Clean. Dirt, grease, oil, and debris get in the way and may cover up a serious prob-
lem. Clean as you work and as needed. Use dry cleaning solvent (Item 18, Appendix F) on all metal surfaces. Use
dishwashing compound (Item 5, Appendix F) and water when you clean rubber, plastic, and painted surfaces.
Deterioration, Rust, and Corrosion.
Be alert for deterioration of plastic and rubber materials. Report it to your supervisor
Check metal parts for rust and corrosion. If any bare metal or corrosion exists, clean
and apply a light coat of lubricating oil (Item 14, Appendix F). Report it to your supervisor.
Bolts, Nuts, and Screws. Check bolts, nuts, and screws for obvious looseness. missing,
bent, or broken condition. You cant try them all with a tool, but look for chipped paint, bare metal, or rust around
bolt heads. If you find one you think is loose, tighten it.
Welds. Look for loose or chipped paint, rust, or gaps where parts are welded together. If
you find a bad weld, report it to your supervisor.
Electric Wires and Connectors. Look for cracked or broken insulation, bare wires, and
loose or broken connectors. Tighten loose connectors and ensure that the wires are in good condition.
Hydraulic Hoses and Lines. Look for wear, damage, and signs of leaks. Ensure that
clamps and fittings are tight. Wet spots indicate leaks, but a stain around a fitting or connector can also mean a
leak. If a leak comes from a loose fitting or connector, tighten it, If something is broken or worn out, correct it if
authorized by the Maintenance Allocation Chart (Appendix B). If not authorized, notify your supervisor.
Fluid Leakage. It is necessary for you to know how fluid leakage affects the status of your
dump truck. 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 your supervi-