TM-9-2320-366-34-1 MTV Direct Maintenance Manual M1083 Series - Volume 1 Download
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TM 9-2320-366-34-1 PRESSURE TEST (CONT) Change 2 2-1072.9 Test continued from page 2-1072.7. CAUTION 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. Holding DUMP BED UP/DOWN switch in the UP position will force hydraulic oil through relief valve and cause oil temperature to rise. Measure hydraulic oil temperature near bottom of hydraulic reservoir. (10) Attach a temperature indicator sticker to hydraulic oil tank. (11) Press and hold DUMP BED UP/DOWN switch in the DOWN position (TM 9-2320-366-10-1) until hydraulic oil temperature reaches 145°F-155°F (63°C-68°C). Note location of pressure reducing valve adjusting screw before performing step (12). (12) If 325-375 PSI (2,241-2,586 kPa) is not present, loosen lock nut on pressure reducing adjusting screw. Turn adjusting screw counter clockwise to lower pressure, clockwise to raise pressure. (13) If pressure cannot be adjusted, clean or replace pressure reducing valve (para 17-3). (14) If pressure can be adjusted, replace dump body cylinder (para 17-4). Hold pressure reducing valve adjusting screw while tightening lock nut. (15) Tighten locking nut on adjusting screw. In the event of a tachometer failure, a HAND THROTTLE lever positioned to full down is approximately 750 RPM. (16) Set engine speed to idle 750 RPM (TM 9-2320-366-10-1). (17) Position PTO switch to off (TM9-2320-366-10-1). (18) Shut down engine (TM 9-2320-366-10-1). NOTE NOTE NOTE Test continued at top of page. PRESSURE TEST (CONT) (19) Disconnect pressure test cable from pressure transducer. (20) Disconnect test hose and adapter from tee fitting. (21) Install cap on tee fitting. (22) Raise dump body (TM 9-2320-366-10-1). (23) Place maintenance legs in stowed position. (24) Lower dump body (TM 9-2320-366-10-1). (25) Remove cagro sling from two dump body lifting brackets. (26) Position two locking pins in dump body. (27) Install safety pins in two locking pins.