11) 11) PILOT PRIMARY PRESSURE PILOT PRIMARY PRESSURE (1) (1) Preparation Preparation Stop the engine. Push the pressure release button to bleed air. Loosen and remove plug on the pilot pump delivery port (A4) and connect pressure gauge. Start the engine and check for oil leakage from the port. Keep the hydraulic oil temperature at 50 ± 5 C. Screw coupling ① ② B ③ Main pump ④ S ⑤ (2) (2) ① Measurement Measurement Measure the primary pilot pressure at rated rpm . (3) (3) Evaluation Evaluation The average measured pressure should meet the following specifications: Unit : kgf / cm 2 6-14 Model Standard Remark R60WVS RRO 35±5