TB-9-2510-251-13 HMMWV Operator and Field Maintenance, Installation & Parts Add-On-Armor Air Conditioning Download
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2-4 TB 9-2510-251-13 2-1.1 Installation of Air Conditioning Kit to M998 and M998A1; M1037; M1097, and M1097A1 with GSIE Add-on-Armor (Cont’d). a. Install Compressor CAUTION When tightening bolts, DO NOT overtighten. Torque to specified torque value only. Failure to comply may result in damage to equipment. NOTE • The Compressor Kit is designed to be installed with both four-groove and five-groove water pump pulleys. • Prior to compressor installation, the four-groove pulley must be changed to a five-groove pulley. • If a five-groove water pump pulley is already present, skip to “Compressor Mounting.” (1) With four-groove water pump pulley only: a. Rotate radiator fan blade until access holes in fan blade line up with four socket head screws attaching fan clutch to four-groove pulley. b. Disconnect fan clutch hose. NOTE If belts slip, it may be necessary to remove belts and prevent pulley from turning. c. Remove four bolts from fan clutch and pulley. d. Remove fan/fan clutch assembly. e. Loosen power steering and alternator belts. f. Remove four screws from four-groove pulley and water pump hub. Set aside screws for reinstallation. g. Remove four-groove pulley. h. Install new five-groove pulley with screws removed from four-groove pulley. i. Install new A/C compressor belt on front groove of water pump pulley. j. Reinstall fan/fan clutch assembly. k. Reconnect fan clutch hose.