TM-9-2320-366-34-1 MTV Direct Maintenance Manual M1083 Series - Volume 1 Download
Page 1158 of 1591
WARNING Drop hydraulic pressure to zero before disconnecting any hydraulic hose, tube, or fitting. 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. Fuel and oil are slippery and can cause falls. Wipe up spilled fuel or oil with rags. Failure to comply may result in injury to personnel. NOTE Tag hydraulic hoses, tubes and fittings prior to disconnecting. NOTE (1) Place drain pan under vehicle. (2) Disconnect hose from front fitting of lower main valve assembly. (3) Install plug in hose. (4) Install swivel run tee on fitting. (5) Install cap and reducer on swivel run tee. (6) Connect test hose, 10,000 PSI transducer, and STE/ICE-R to reducer. (7) Start engine (TM 9-2320-366-10-1). (8) Position PTO switch to on (TM 9-2320-366-10-1). (9) Set engine speed by increasing HAND THROTTLE lever until tachometer reads 1,250-1,450 RPM. (10) Position STATION SELECTOR switch to WRECKER CONTROL PANEL. (11) Preform STE/ICE-R test #51 (TM 9-4910-571-12&P). (12) Position MAIN WINCH RH lever to OUT and note reading. (18) Remove swivel run tee from front fitting of lower main valve. (19) Remove plug from hose. (20) Connect hose to front fitting of lower main valve. LOWER MAIN VALVE ASSEMBLY PRESSURE TEST LOWER MAIN VALVE ASSEMBLY PRESSURE TEST (Cont) TM 9-2320-366-34-1 Change 1 2-1006.1 (13) If pressure is not between 2,950-3,050 PSI (20,340-21,030 kPa), repair or replace lower main valve assembly (para 16-84). (14) Position PTO switch to off (TM 9-2320-366-10-1). (15) Shut down engine (TM 9-2320-366-10-1). (16) Disconnect STE/ICE-R, 10,000 transducer, and test hose, from reducer. (17) Remove reducer and cap from swivel run tee. In the event of a tachometer failure a HAND THROTTLE lever positioned to L is approximately 1,250-1,450 RPM.