TM 9-2320-386-10 2-15 Section II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) 2-5. GENERAL The best way to maintain ESP vehicle components covered by this manual is to inspect them on a regular basis so that minor faults can be discovered and corrected before they result in serious damage, failure, or injury. This section contains sys- tematic instructions for inspection, adjustment, and correction of components to avoid costly repairs or major breakdowns. This is referred to as Preventive Maintenance Checks and Services (PMCS). 2-6. PREVENTIVE MAINTENANCE CHECKS AND SERVICES INDEX 2-7. Preventive Maintenance Checks and Services (PMCS) 2-15 2-8. Cleaning Instructions and Precautions 2-17 2-9. Class Leakage Definitions 2-19 TITLE PAGE NO. PARA. NO. 2-7. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) Operator/Crew Preventive Maintenance Checks and Services, table 2-2, lists the inspection and care of your equipment required to keep it in good operating condition. a. Item Number. This column will be used as a source of item numbers for the TM Number column on DA Form 2404, Equipment Inspection and Maintenance Worksheet, in recording results of PMCS. b. Interval. NOTE • Observe all warnings and cautions. • Designated intervals are performed under usual operating con- ditions. PMCS intervals must be performed more frequently when operating under unusual conditions. (1) BEFORE OPERATION checks and services are performed prior to the equipment leaving its containment area (motorpool or other control or dispatch point) or performing its intended mission. (2) DURING OPERATION checks begin when the equipment is being used for its intended mission. (3) AFTER OPERATION checks and services begin when the equipment is taken out of its mission mode or returned to its containment area (motorpool or other control or dispatch point).