Unit : kgf / cm 2 7-16 15) SWING PARKING BRAKE RELEASING PRESSURE (1)Preparation ①Stop the engine. ②Loosen the cap and relieve the pressure in the tank by pushing the top of the air breather. ③Install a connector and pressure gauge assembly to swing motor SH port, as shown. ④Start the engine and check for oil leakage from the adapter. ⑤Keep the hydraulic oil temperature at 50±5˚C. (2)Measurement ①Select the following switch positions. ·Power mode switch: P mode ②Operate the swing function or arm roll in function and measure the swing brake control pressure with the brake disengaged. Release the control lever to return to neutral and measure the control pressure when the brake is applied.
Repeat step ② three times and calculate the average values. (3) Evaluation SH SH The average measured pressure should be within the following specifications. Model Description Standard Remarks R505LVS Cracking 20.9 Full stroke 35.5