AVUM PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
3-7. GENERAL PMCS INFORMATION (AVUM).
The Preventive Maintenance Checks and Services (PMCS) procedures are performed on a regular basis at the AVUM
level, to ensure operational readiness of the Ground Handling Wheels Assembly. Defects should be found before they
result In serious damage, equipment failure, or personnel injury. Systematic instructions presented in this section, allow
the operator to perform Inspections, adjustments, and corrections. The AVIM level may perform all AVUM level PMCS
3-8. PMCS PROCEDURES (AVUM).
The general and specific AVUM PMCS procedures, and directions for using the procedures, are presented in the
3-8.1. General PMCS Procedures (AVUM). General rules to follow while performing specific AVUM PMCS procedures
are as follows:
Safety. Observe all WARNINGS and CAUTIONS while performing AVUM PMCS procedures Ensure that Items
are correctly assembled, secured, serviceable, adequately lubricated, and not worn or leaking.
An item is CORRECTLY ASSEMBLED when all parts are present and in proper position.
Wires, nuts, hoses, fittings, or attaching hardware are SECURE when they cannot be easily removed by
hand or wrench.
An Item is SERVICEABLE if it is not worn beyond repair or likely to fail before the next scheduled
An item is ADEQUATELY LUBRICATED if it has been lubricated in accordance with standard or specified
An Item should be checked for LEAKAGE. Definitions for leakage are presented in paragraph 3-10.
Defects. Ensure that welds, tubing, and hoses are free of defects as described below:.
Check for loose or chipped paint, rust, or gaps where parts are welded together. If a bad weld is found,
notify your supervisor immediately
Look for cracked, frayed, loose, or broken hose assemblies. Replace or report an unserviceable hose
Check for wear, damage, and leaks. Ensure that couplings and fittings are tight. Wet spots indicate leaks,
but a stain around a coupling or fitting can also mean a leak in accordance with paragraph 3-10 If wear,
damage, or leaks are found, notify supervisor.