7-17
SH
Preparation
Stop the engine.
Loosen the cap and relieve the pressure
in the tank by pushing the top of the air
breather.
The pressure release L wrench to bleed
air.
Install a connector and pressure gauge
assembly to swing motor SH port, as
shown.
Star t the engine and check for oil
leakage from the adapter.
Keep the hydraulic oil temperature at
50
佳
5˚C.
Measurement
Select the following switch positions.
Power mode switch : P mode
Operate the swing function or arm roll in
function and measure the swing brake
c o n t r o l p r e s s u r e w i t h t h e b ra ke
disengaged. Release the control lever
to return to neutral and measure the
control pressure when the brake is
applied.
Repeat step
刯
three times and calculate
the average values.
Evaluation
(1)
刮
刯
到
刱
刲
刳
(2)
刮
余
刯
The average measured pressure should be within the following specifications.
Unit : kgf / cm
2
SWING PARKING BRAKE RELEASING PRESSURE
14)
(3)
32097MS02
Model
Description
Standard
Allowable limits
Remarks
HX430 L
Brake disengaged
40
31~49
Brake applied
0
-
