AVIM PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
4-7. GENERAL PMCS INFORMATION (AVIM).
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. The instructions presented in Chapter
3, Section III, allow the operator to find defects before they result in serious damage, equipment failure, or personnel
injury. The AVUM level instructions can be used at AVIM level to perform inspections, adjustments, and corrections.
4-8. PMCS PROCEDURES (AVIM).
No specific PMCS procedures are apparent or assigned to the AVIM level The general and specific AVUM PMCS
procedures, and directions for using the procedures, are presented in Chapter 3, Section III.
Dry cleaning solvent P-D-680 is toxic and flammable. Always wear protective goggles and
gloves, and use only In a well-ventilated area. Avoid contact with skin, eyes, and clothes, and
DO NOT use near open flame or excessive heat. The solvents flash point is 100°F - 130°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 flush your eyes with clean water and get medical
4-9. CLEANING AGENTS (AVIM).
An important part of the PMCS procedures is keeping the wheels assemblies clean. Equipment that is covered with
surface dirt, grease, and oil cannot be properly inspected. Keep excess lubricants away from exterior parts that do not
Authorization. Use only those authorized cleaning solvents or agents listed in Appendix D.
Application. Use dry cleaning solvent (item 6, Appendix D) on a wiping rag (item 4, Appendix D) to clean
grease, oil, or rust from metal parts. After parts are cleaned, rinse and dry thoroughly.
Lubrication. Apply light lubricating oil (item 5, Appendix D)to all polished metal surfaces to inhibit corrosion.
4-10. LEAKAGE DEFINITIONS (AVIM).
It is important to know how fluid leakage affects the status of the Ground Handling Wheels Assembly. Review the
classes of leaks, acceptable leaks, and unacceptable leaks discussed below.