TM 9-4940-568-20
2-6
Section III. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2-7. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) INTRODUCTION.
This section contains Unit Maintenance PMCS requirements for the Forward Repair System (FRS). The PMCS tables
contain checks and services necessary to ensure the FRS is ready for operation. Using the PMCS tables, perform
maintenance at the specified intervals. Perform preventive maintenance checks and services in TM 9-4940-568-10
before doing the Unit preventive maintenance.
2-8. GENERAL MAINTENANCE PROCEDURES.
Drycleaning Solvent (P-D-680) is TOXIC and flammable. Wear protective goggles, face
shield, and gloves; use only in a well-ventilated area; avoid contact with skin, eyes, and
clothes, and do not breathe vapors. Keep away from heat or flame. Never smoke when
using solvent. The flashpoint for Type II Drycleaning Solvent is 140 degrees F (60 degrees
C) and Type III Drycleaning Solvent is 200 degrees F (93 degrees C). Failure to do so may
result in injury or death to personnel.
If personnel become dizzy while using cleaning solvent, immediately get fresh air and
medical help. If solvent contacts skin or clothes, flush with cold water. If solvent contacts
eyes, immediately flush eyes with water and get immediate medical attention.
a.
Cleanliness. Dirt, grease, oil and debris only get in the way and may cover up a serious problem. Use
drycleaning solvent (Item 38, Appendix C) on metal surfaces and soapy water on rubber.
b.
Bolts, Nuts and Screws. Check bolts, nuts and screws for obvious looseness, missing, bent or broken
condition and tighten or replace as necessary. If they cannot be checked with a tool, look for chipped paint, bare metal
or rust around bolt heads.
c.
Welds. Look for loose or chipped paint, rust or gaps where parts are welded together. If a bad weld is found,
notify the supervisor.
d.
Electric Wires and Connectors. Look for cracked or broken insulation, bare wires and loose or broken
connectors. Tighten loose connectors and make sure the wires are in good shape.
e.
Fluid Hoses, Tubes and Fittings. Look for wear, damage, leaks and make sure clamps and fittings are tight.
Wet spots show leaks, but a stain around a fitting or connector may indicate a leak. If connector or fitting is loose,
tighten it. If something is broken or worn out, repair or replace per applicable procedure.
f.
Fluid Leakage. It is necessary to know how fluid leakage affects the status of fuel, oil, coolant and the
hydraulic systems. The following are definitions of the types/classes of leakage necessary to know in order to
determine the status of the FRS. Learn, then be familiar with them and REMEMBER - WHEN IN DOUBT,
NOTIFY THE SUPERVISOR!
