14) 14) MAIN PUMP DELIVERY PRESSURE MAIN PUMP DELIVERY PRESSURE (1) (1) Preparation Preparation Stop the engine. Push the pressure release button to bleed air. To measure the main pump pressure. Install a connector and pressure gauge assembly main pump gauge port (1G, 2G) as shown. Start the engine and check for oil leakage from the port. Keep the hydraulic oil temperature at 50 ± 5 C. ① ② Screw coupling ③ B Main pump ④ S ⑤ (2) (2) ① Measurement Measurement Measure the main pump delivery pressure at high idle. (3) (3) Evaluation Evaluation The average measured pressure should meet the following specifications. Unit :
kgf / cm 2 6-17 Model Engine speed Standard Allowable limits Remarks R60WVS RRO High ilde 20±5 -