BASE ASSEMBLY ADJUSTMENT (cont)

TM 11-6625-3081-23 5-7. BASE ASSEMBLY ADJUSTMENT (cont) 5-7 3 . Rotate regulator valve handle (5) to left to closed position. 5. Verify that gage (6) for regulated air supply indicates O psi. Activate van air supply in accordance with TM 11-6625-3085-12. DO NOT PLACE HANDS OR FEET UNDER BASE ASSEMBLY WHILE PNEUMATIC SYSTEM IS OPERATING. INJURY COULD RESULT. CAUTION Regulated air pressure on control panel must not exceed 125 psi or damage to equipment may result. Rotate regulator valve handle (5) to the right until regulated pressure gage (6) indicates 20 psi. Isolator number 1 gage (7), isolator number 2 gage (8) and isolator number 3 and 4 gage (9) should also indicate 20 psi. Refer to paragraph 5-6 for position of isolators in base assembly. 7. Using regulator valve handle (5), increase air pressure in 10 psi increments until bench assembly floats. Pressure should be between 115 to 125 psi. 8. When bench is floating and has stabi- lized, measure gap between pivot plate (1) and pivot plate sockets (2) at four corners of base assembly. Compare measurements recorded in step 1. Measurements should show an increase of 1/4 to 3/8 inch. All gaps should be equal ± 1/16 inch. 5-43