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ARMY TM 92815-252-24 AIR FORCE TO 38G1-92-2 f. Service coolant system, refer to end item maintenance manual. 3-10. WATERPUMP. 3-10.1.   Removal. a. Drain coolant system, refer to end item maintenance manual. b. Relieve fan belt tension. NOTE Nut (6, FIGURE 3-4) has left hand threads. c. Remove nut (6), washer, fan, and fan belt. d. If installed, tag and disconnect electrical leads to temperature sensors. e. Loosen clamps and disconnect inlet and outlet hoses. NOTE Identify location of two shorter capscrews (8) for use during installation. f. Remove five capscrews (7 and 8), two nuts (10), and seven washers (9). g. Slide water pump (11) with thermostat (5) and housing (3) attached, from mounting studs (17).  Remove and discard gasket (12). h. Remove sleeve (13) and two preformed packings (14).  Discard preformed packings. i. Remove mounting plate (15) and gasket (16).  Discard gasket. j. If damaged, remove two mounting studs (17). k. Cover all openings. 3-10.2.   Inspection. a. Inspect pump impeller for damage, corrosion, or missing blades. b. Inspect pump rotation for abnormal noise, binding, and other abnormal conditions. c. Inspect pump housing for cracks, corrosion, or any other damage. d. Inspect sleeve for corrosion or any other damage. e. Inspect mounting studs for damage. 3-10.3.   Installation. a. Remove all covers installed during removal. b. Clean all mating surfaces of any traces of old gaskets.  Dry all surfaces. CAUTION If two water pump studs (17, FIGURE 3-4) have been removed, they must be Installed and finger tightened.  Do not overtighten as this will cause thread damage preventing a fiat sealing surface. c. If removed, install two mounting studs (17) finger tight. d. Install two new preformed packings (14) and sleeve (13). e. Install new gasket (16), mounting plate (15), new gasket (12), and water pump (11). f. Secure pump to crankcase with seven washers (9), two nuts (10) and five capscrews (8 and 7).  Install two shorter capscrews (8) as noted during removal.  Tighten hardware to 186 in-lbs (21.0 Nm). 3-20


 


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