UNIT PREVENTIVE MAINTENANCE CHECKS AND
SERVICES (PMCS) INTRODUCTION - CONTINUED
GENERAL PMCS PROCEDURES - CONTINUED
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 (WP 0234 00). If not authorized, notify your supervisor.
Fluid Leakage. It is necessary for you to know how fluid leakage affects the status of your truck. The following
are definitions of the types/classes of leakage you need to know to be able to determine the status of your truck.
Learn and be familiar with them, and remember - when in doubt, notify your supervisor.
Leakage Definitions For PMCS
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Leakage of fluid great enough to form drops, but not enough to cause drops to drip from
item being checked/inspected.
Leakage of fluid great enough to form drops that fall from item being checked/inspected.
Operation is allowable with Class I and Class II leakage. WHEN IN DOUBT, NOTIFY YOUR SUPERVI-
SOR. When operating with Class I or Class II leaks, check fluid levels more frequently. Class III leaks must
be reported immediately to your supervisor. Failure to do this will result in damage to vehicle and/or compo-
PMCS INITIAL SETUP
This paragraph lists tools, materials, and personnel required for PMCS and lubrication.
Mandatory replacement parts for PMCS and lubrication are listed after Unit PMCS, Table 2, WP 0021 00.
Common no. 1 shop set
General mechanics tool kit
Tensiometer, dial indicating
AOAP sampling kit
Lubricating oil, OE/HDO 10
Lubricating oil, OE/HDO 40
Lubricating oil, OE/HDO 15/40
Lubricating oil, OE/HDO 30
Lubricating oil, OEA
Lubricating oil, GO 85/140
Lubricating oil, GO 80/90
Lubricating oil, GO 75
Unit Maintenance Mechanic