TM 9-2320-361-10 2-26. OPERATION OF FUEL TANK TRUCK (Contd) (12) Remove ground wires (4) and (7) and secure. (13) Push hand throttle (1) in. (14) Shut off engine (refer to para. 2-17) and disengage transfer power takeoff lever (2). e. Checking Condition of Filter. NOTE Filter should be checked once a day during pumping operations. (1) Start engine. Refer to para. 2-14 or 2-15. (2) Transfer power to pump. Refer to d.(2) and d.(3) of this para. (3) Attach ground wires (4) and (7) to suitable grounds. (4) Take pressure reading on inlet side of filter: (a) Turn pressure gage control handle (6) right, to position NO. 1. (b) Record pressure reading. (5) Take pressure reading on outlet side of filter: (a) Turn pressure gage control handle (6) right, to position NO. 2. (b) Record pressure reading. (6) Take pressure reading on internal pressure side of filter: (a) Turn pressure gage control handle (6) right, to position NO. 3. (b) Record pressure reading. (7) Close valve by turning pressure gage control handle (6) toward gage. 2-112