WATER PUMP, THERMOSTAT & IDLER PULLEYS - CONT

WATER PUMP, THERMOSTAT & IDLER PULLEYS - CONT - TM-5-3820-256-24-5_326

WATER PUMP, THERMOSTAT & IDLER PULLEYS - CONT - TM-5-3820-256-24-5_328

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL WATER PUMP, THERMOSTAT & IDLER PULLEYS Section 9 CLEANING, INSPECTION AND REPAIR CLEANING Clean the Water Pump as follows: 1. Wash all parts thoroughly in a good solvent. 2. Dry with compressed air. INSPECTION AND REPAIR Inspect and Repair the Water Pump as follows: (Refer to Fig. 22) 1. After cleaning visually inspect the shaft wear sleeve and bearing spacer for wear and corrosion. Replace if necessary. 2. Visually inspect the bearing housing (2) for wear or damage. Replace if necessary. Figure 22. - Water Pump Cross Section (Nut Retained Hub) 1. Impeller 2. Bearing housing 3. Retaining ring 4. Shaft 5. Water pump seal 6. Seal seat and bushing assembly 7. Hub 8. Bearing assembly 3. Inspect the impeller vanes (1) for erosion, remove any nicks, burrs, or roughness especially from around the edges. Replace if necessary. 4. When servicing the water pump, ALWAYS replace the water pump seal (5) and seal seat and bushing assembly (6). REASSEMBLY AND INSTALLATION IMPORTANT: A new high temperature grease is now used in production, service and ReNEWed water pump assemblies with a nut retained hub. The new grease (specification EMS B27-5004, Type 1) must be used when reassembling these water pumps. The grease specification EMS B27-5004 is met by Amoco’s Reckon Premium Grease No. 2 Color Red and may be obtained locally. If a local distributor cannot be found, contact: Amoco Oil Company 200 E. Randolph Drive Chicago, IL 60601 Phone: (312) 856-5111 IMPORTANT: Seals and bearings must be replaced. Reassemble and Install the Water Pump with Nut Retained Hub as follows: (Refer to Fig. 23) 1. Apply a coat of Aviation Permatex #3 to rear bearing seal bore. See DETAIL "A" Fig. 23. 2. Pack new rear seal (5, Fig. 23) cavity full of grease*, lubricate seal lip with grease*. Press new rear seal into housing so open end of seal faces towards bearing. 3. Prepack rear roller bearing inner race assembly (6) with grease*. Support shaft (11) at impeller end and press inner race assembly to bottom on shoulder of shaft. *Lubricating Grease per EMS B27-5004, Type I - Use Amoco Rykon Premium Grease No. 2 Color Red. CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 12

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