TM  10-3930-643-34 ENGINE,  FUEL,  EXHAUST  AND  COOLING  TROUBLESHOOTING  AND  MAINTENANCE. 4-10. oil Pressure Regulator Valve. (Sheet 1 of 3) This task covers: a,  Removal b. Cleaning/Inspection c. Installation INITIAL  SETUP Tools Tool  Kit,  General  Mechanic’s Automotive NSN   5180-00-177-7033 Shop  Equipment,  Automotive Maintenance  and  Repair: Field  Maintenance,  Basic, Less  Power NSN   4910-00-754-0705 Shop  Equipment,  Automotive Maintenance  and  Repair: Field   Maintenance NSN 4910-00-919-0076 Torque  Wrench NSN  5120-00-643-6364 Materials/Parts Cleaning  solvent  P-D-680 (App. C, Item 5) Clean cloth (App. C, Item 24) Preformed  packing Gasket Torques Valve cap (1) to 170 lb-ft. EQUIPMENT  CONDITION References Condition  Description TM  10-3930-643-20 Left side engine access cover removed. REMOVAL 1. Using a 1-3/4” open end wrench, remove valve cap (l), preformed packing (2), gasket (3) and valve (4) in front, left side of engine. Discard preformed packing (2) and gasket (3). Remove all  gasket material from mounting surfaces. Go to sheet 2 4-73