Electric Motor - TM-10-4930-236-13P

Table 4-1. Unit Preventive Maintenance Checks and Services Monthly Schedule -cont

SECTION IV. TROUBLESHOOTING - TM-10-4930-236-13P_56

TM-10-4930-236-13P Tank and Pump Unit Liquid Dispensing; for Truck Mounting Mil Design Tank and Pump Unit Electric Motor Driven Model (97403) Manual
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TM 10-4930-236-13&P Item No. Item To Be Inspected Procedures 8 Electric Motor Inspect for loose or missing mounting bolts. Check for proper operation. Tighten loose hardware. Notify next higher level if motor is inoperable. 9 Intervehicle Power Cable and Plug Check for loose or damaged cable or connectors. Test for continuity (para. 4-15). 10 Valve Operating Assembly Check for proper operation. Check that cables are securely connected. Tighten loose cables (para. 4-17). 11 Adapter Half, Quick Disconnect Inspect for secure connections, damage and signs of leakage. Disconnect Refer to para. 4-18 for maintenance. 12 Bottom Loading Manifold Inspect for secure connections, damage and signs of leakage. Refer to para. 4-19 for repair. 13 Frame and Storage Box Inspect frame for cracks, loose and missing hardware or components. Tighten loose hardware. Notify next higher level for repairs. 14 Tie Down Assembly Inspect tie down assemblies for looseness, cracked welds and thread damage. Check for frayed, missing, or loose straps and turnbuckles. Replace defective assemblies (para. 4-21). Tighten loose turnbuckles hand tight. 15 Tank Assemblies Inspect for damage or signs of leakage. Inspect for damaged or missing shackles and tie down links. Inspect skids for damage. Inspect the bottom loading valve for leaks. If the tank is damaged or leaking, replace the tank (para. 4-23). Refer to next level for repair to tank or bottom loading valve. 16 Manhole CAUTION When pumping operation is in progress blockage of the vent valve can cause the tanks to rupture or collapse. in freezing weather, especially during freezing precipitation, ensure the vent valve in the manhole is protected by being located under the Fill Plug Hinge. Check the manhole gasket for damage, and replace if necessary. Ensure that the manhole mounting hardware is tight. Check to see that the manhole cover hinge and cam close tightly. 17 Coupling Half Check for signs of leakage around the valve handle shaft. Check coupling gasket for cracks. Inspect coupling for secure connection. Test coupling half by observing the internal valve mechanism as the handle is moved to ensure handle operates valve. Refer to para. 4-26 for maintenance procedure. 4-9

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