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 Change 2 2-1072.1 Test continued from page 2-1071. CAUTION NOTE NOTE In the event of a tachometer failure, a HAND THROTTLE lever positioned to full down is approximately 750 RPM. (13) Set engine speed to idle 750 RPM (TM 9-2320-366-10-1). (14) Position PTO switch to off (TM 9-2320-366-10-1). (15) Shut down engine (TM 9-2320-366-10-1). NOTE (10) If pressure is not 2,825-2,875 PSI (19,478-19,822 kPa), loosen lock nut on adjusting screw on four-way relief valve. Turn adjusting screw counter clockwise to lower pressure, clockwise to raise pressure. (11) If pressure cannot be adjusted, clean or replace four-way relief valve (para 17-3). Hold adjusting screw on four-way relief valve while tightening lock nut. (12) Tighten locking nut on adjusting screw. NOTE Test continued at top of page. 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. (7) Attach a temperature indicator sticker to hydraulic oil tank. (8) Press and hold DUMP BED UP/DOWN switch in the UP position (TM 9-2320-366-10-1) 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) Note location of adjusting screw on four-way relief valve before performing step (10). PRESSURE TEST (CONT) PRESSURE TEST (CONT)