TM-9-2350-256-34

RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

JULY 2005

TM-9-2350-256-34 - Page 382 of 584

TM 9-2350-256-34

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3.

Set engine speed at 1600–1800 rpm.

CAUTION

Do not exceed 1700 psi (11,722 kPa) relief pressure.

NOTE

BOOM COMBINATION CONTROL VALVE ADJUSTMENT—Perform steps 4 thru 6 to adjust the

boom combination control valve to achieve live boom capability.

NOTE

This adjustment must be performed with the hydraulic reservoir oil temperature at 100 F–130 F

(38 C–54 C).

4.

If using load cell or weights, activate boom valve to RETRACT position and use adjusting screw (22) on boom combination

control valve (21) to achieve a pull of 50,000–55,000 lb (22,680–24,948 kg). Turning in a clockwise direction will increase

pressure.

If blocking the boom, place boom operating lever in RETRACT position and boom safety control lever in

STOW position. Adjust boom combination control valve rear relief (toward rear of vehicle) to 1600 psi (11,032 kPa) by

turning adjusting screw (22). Turning in a clockwise direction will increase pressure.