TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 615 of 1275
TM9-2350-311-20-1 7-5 SURGE TANK AND PRESSURE RELIEF VALVE This task covers: a. Removal b. Installation I INITIAL SETUP I TOOIS . . Equipment Conditions General mechanic’s tool kit (item 64, Appx H) Air intake grille opened (para 11-8) Torque wrench (item 72, Appx H) Coolant system drained (TM 9-2350-311-10) Engine exhaust deflector removed (para 4-5) Materials/Parts Engine exhaust grille removed (para 4-5) Adhesive (item 1, Appx D) Grille support plate removed (para 4-5) Gasket (item 140, Appx G) Radiator fan access door removed (para 4-5) Right front grille assembly removed (para 4-5) Right transmission door removed (para 11-7) a. Removal WARNING Ensure engine and coolant system are cool enough to permit safe handling in order to prevent burns. 1 Remove two screws (1), two washers (2), and retainer (3). 2 Loosen two clamps (4) at elbow (5). 3 Loosen two clamps (6 and 7). 4 Unscrew two nuts (8 and 9). 5 Disconnect five hoses (10, 11, 12, 13, and 14) from surge tank (15). 6 Lift surge tank (15) up and out. NOTE The location of the pressure relief valve differs between M109A2/M109A3 and M109A4/M109A5 Howitzers. 7 Unscrew nut (16) and remove hose (17) and elbow (18). 8 Remove four screws (19), relief valve (20), and gasket (21) from block (22). Discard gasket. 7-10