WATER PUMP, THERMOSTAT & IDLER PULLEYS - CONT

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

WATER PUMP, THERMOSTAT & IDLER PULLEYS - CONT - TM-5-3820-256-24-5_330

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 4. Lightly lubricate seal surface of shaft and O.D. of shaft installation sleeve with grease* and install shaft into front of pump with installation sleeve (Fig. A). IMPORTANT: The shaft installation sleeve (Fig. A) can be used with both old and new style water pump shafts but MUST DEFINATELY be used with the new style shaft (Fig. A). Installing the new style water pump shaft ,without the shaft installation sleeve could cause rear seal damage and/or displacement. The shaft installation sleeve can be fabricated locally. Figure A. Shaft Installation Sleeve and Old vs. New Style Water Pump Shaft 5. Remove shaft installation sleeve. 6. Grease* rear roller bearing outer race and press into housing against shoulder. 7. Install spacer (9). 8. Press in outer race of front bearing and make sure the outer bearing races and spacers are bottomed. *Lubricating Grease per EMS B27-5004, Type I - Use Amoco Rykon Premium Grease No. 2 Color Red. 9. Install spacers (8 and 12). 10. Fill cavity between spacers with 17cc (.6 oz.) of grease*. 11. Prepack front roller bearing inner race assembly with grease*. Support shaft at impeller end and press inner race assembly until it bottoms on shaft. 12. Install spacer (16) and snap ring (7). 13. Pack spring area of front seal (10) full of grease* and lubricate seal lip with grease*. Install front seal into housing against snap ring. 14. Lightly lubricate seal surface of wear sleeve (14). Install wear sleeve. 15. Install hub (15) on shaft. 16. Install nut (13) according to the following: a. If a flange nut is used apply engine oil to threads. Torque to 237 N•m (175 Ibf-ft). b. If a regular nut is used add Loctite #242 to threads. Torque to 203 N•m (150 Ibf-ft). Torque shaft by internal hex while holding nut. 17. Install coolant seal (4) in bearing housing. IMPORTANT: An "O" ring is necessary on coolant seal used with new style bearing housing which has a groove provided (Fig. 23a). With old style bearing housing which has no groove an "O" ring MUST NOT be used on the coolant seal. Instead apply Permatex #3 to seal O.D. before installing (Fig. 23b). CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 14

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