Unit Preventive Maintenance Checks and Services (Continued).

SECTION IV. UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - TM-5-4310-385-13_31

Unit Preventive Maintenance Checks and Services (Continued). - TM-5-4310-385-13_33

TM-5-4310-385-13 Compressor Reciprocating Air: Electric Motor Driven Caster Mounted 5 CFM 175 PSI C & H Model 20-917 Manual
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Item Interval No. W M Q Item To Be Inspected. Procedures TM 5-4310-385-13 Table 3-2. Unit Preventive Maintenance Checks and Services (Continued). W - Weekly M - Monthly Q - Quarterly 2 PRESSURE SWITCH a. Inspect pressure switch fitting (1) at tank for air leaks. b. Turn power off and ON/OFF switch off. Check wire connections at screw terminals (2) for secure attachment. c. With power on and ON/OFF switch on, check operation of pressure switch (3) by observing pressure gauge while depressing inflator gauge lever. Pressure switch should engage starter at 160 psi and stop starter at 190 psi. 3 COMPRESSOR DRIVE a. Inspect belt guard mounting screws (1). Remove screws and belt guard (2). b. Inspect belt guard mounting bolts (3) to tank saddle. c. Inspect V-belts (4) for cracks or signs of wear. d. Inspect drive pulley (5) for secure attachment to motor shaft. Check key and bushing capscrews (6) for tightness. 3-6

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