Change 1          2-1072.11 PRESSURE TEST       (1) Disconnect hose B from fitting at port B        of valve manifold.   (2) Install swivel run tee on fitting at        port B of valve manifold.   (3) Connect hydraulic hose B to swivel run tee.   (4) Connect adapter, hose, and STE/ICE adaptor        to swivel run tee.   (5) Start engine (TM 9-2320-366-10-1).   (6) Position PTO switch to on (TM  9-2320-        366-10-1).   (7) Increase engine RPM to 1250-1450        (TM 9-2320-366-10-1).   (8) Press and hold DUMP BED UP/DOWN        switch in the DOWN position until hydraulic        oil temperature reaches 145°F-155°F        (63°C-68°C).   (9) Perform STE/ICE Test #51 (TM 9-4910-        571-12&P)   Holding DUMP BED UP/DOWN switch in the down position will force hydraulic oil through relief valve and cause oil temperature to rise. Measure hydraulic oil temperature near bottom of hydraulic reservoir. NOTE Hydraulic oil temperature must be 145°F- 155°F (63°C- 68°C) prior to performing troubleshooting checks.  Failure to comply may result in inaccurate test results.       CAUTION    Lubricating oil is slippery and can cause falls. Wipe up spilled oil with rags.  Failure to comply may result in injury to personnel. Prolonged contact with lubricating oil (MIL-L-21 04) may cause a skin rash.  Skin and clothing that come in contact with lubricating oil should be thoroughly washed immediately.  Saturated clothing should be removed immediately.  Areas in which lubricating oil is used should be well ventilated to keep fumes to a minimum. Failure to comply may result in injury to personnel. Wear approved eye protection when performing pressure checks.   Failure to comply may result in oil getting into eyes.  If oil contacts eyes, seek medical attention immediately. Dump body weighs approximately 3,030 lbs. (1,376 kgs).  Attach a suitable lifting device prior to lifting. Failure to comply may result in injury to personnel. WARNING PRESSURE TEST (Cont) TM 9-2320-366-34-1 (10) Hold DUMP BED UP/DOWN switch in        the DOWN position and observe pressure        reading of 325-375 psi (2241-2586 kPa).          If pressure is low, adjust pressure reducing        valve clockwise. If pressure is high, adjust        pressure reducing valve  counterclockwise.        If pressure cannot be adjusted, clean or        replace pressure reducing valve (para 17-3). (11) Reduce engine RPM to idle (TM 9-2320-        366-10-1). (12) Position PTO switch to off (TM 9-2320-        366-10-1). (13) Shut down engine (TM 9-2320-366-10-1). (14) If pressure can be adjusted, but dump        bed still does not raise, replace hoist        cylinder (para 17-4). (15) Remove STE/ICE adaptor, hose and        adapter from swivel run tee. (16) Remove hose B from swivel run tee. (17) Remove swivel run tee from port B of        valve manifold. (18) Connect hose B to port B of valve manifold.