TM 5-4930-244-14 TABLE 2-1.  OPERATOR PREVENTATIVE MAINTENANCE CHECKS AND SERVICES FOR: LUBRICATING AND SERVICING UNIT, MODEL PM92-133 Location Not Fully Item Item to Mission No. Interval Check/Service Procedure Capable if: 72 After Quick Release Inspect quick release and limiting valve Valve damaged. & Limiting Valve (8) for damage.  (Figure 2-23.) 73 After Synchronizing Inspect quick synchronizing valve (10) Valve damaged. Valve for damage. 74 After Air Tank Inspect air tank assembly (11) for Tank is damaged or not Assembly damage and drain daily.  (Figure 2-23.) drained daily. 75 After Power Cluster Inspect power cluster & master cylinder Power cylinder or master & Master (12) for damage. cylinder is damaged or Cylinder leaking. Check master cylinder (12) brake fluid Master cylinder is empty level and fill as needed. or fluid is low. 76 After Intervehicular Check intervehicular trailer harness (14) Cables damaged. Trailer Harness for cuts and abrasions. 77 After Voltage Inspect voltage reducer box (15) for Box cracked or seal Reducer Box cracks and deteriorated seal. leaks. 78 After Air Tank Inspect air tank (11) for cracks.  (Figure Tank cracked or 2-14.) damaged. 79 After Reflectors Inspect reflectors (3) for cracks or Cracks or damage exists. damage.  (Figure 2-18.) 80 After Trailer Frame Inspect trailer frame (1) and lunette for Frame or lunette is cracks, corrosion, dents, or warping. cracked, badly corroded, (Figure 2-23.) or warped; or lunette is missing. 81 After Platform Skid Inspect platform skid (1) for cracks or Skid has cracks or dents. dents.  (Figure 2-24.) 82 After Doors Inspect doors (3) for smooth operation, Doors are inoperable, holes, dents, leaks, or damage. expose inside assemblies, or leak. 83 After Panels Inspect panels (4) for holes or other Panels expose inside damage and for leaks. assemblies, or leak. 2-18