Testing - TM-5-1940-277-34

INJECTOR TEST AND REPAIR INSTRUCTIONS (Continued) - TM-5-1940-277-34_284

INJECTOR TEST AND REPAIR INSTRUCTIONS (Continued) - TM-5-1940-277-34_286

TM-5-1940-277-34 Boat Bridge Erection Twin Jet Aluminum Hull Model USCSBMK1 (1940-01-105-5728) Manual
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TM 5-1940-277-34 INJECTOR TEST AND REPAIR INSTRUCTIONS (Continued) LOCATION ITEM ACTION REMARKS 1. Injector tester a. Nozzle Connect to Use testing holder (1) testing machine. machine. b. Injector cap Loosen. Use 1 in wrench. nut (2) c. Spring a. Pump tester Adjust by placing adjusting up to pres- screwdriver down screw (4) sure of 2,705 through leak-off psig (184.1 drilling in cap atm). nut (2). Open valve on tester one-half turn b. Rotate spring from closed adjusting position. Pump screw counter- tester as neces- clockwise sary to maintain until nozzle constant pressure sprays. c. Hold spring adjusting screw and tighten injec- tor cap nut (2) securely. d. Needle valve Back Leakage Test: (10) o Pump tester to 2,190 psig (149 atm) o Fully open tester valve. 2-263

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