Working principle:
The clutch control system is hydraulically controlled and pneumatically boosted. With the clutch pedal stepped on, the drive cylinder push rod pushes the piston to move forward, so that the brake fluid, which flows along the fluid pipe into the hydraulic control cavity of clutch booster cylinder, provides working pressure on the piston, and besides, serves as control pressure to control the air pressure in the booster cylinder chamber. When compressed air gets into the booster cylinder, the generated force will push the piston to move the booster cylinder push rod, and drive the release rocker arm to rotate, such that the release fork makes the release bearing movebackward, finally to release the clutch successfully.The clutch drive cylinder, clutch fluid reservoir and clutch pedal assembly etc. are arranged to the front wall of the cab, with the drive cylinder connected to the clutch booster cylinder on the chassis through high pressure hose, and one bracket shared by the clutch operating part and the brake operating part. The fluid reservoir is installed directly on the clutch drive cylinder.
Precautions:
1)Remember to release the pedal after the bleed valve is tightened during air discharge in order to avoid air suction, and allow the pedal to rise up to the maximum height, so that the brake fluid in the fluid reservoir is added into the drive cylinder hydraulic cavity.
2) To change the brake fluid, the residue in the hydraulic system has to be cleaned. Then uniformly change the brake fluid of specified grand and same lot. The brake fluids of different grades and lots shall not be mixed.
3) As the brake fluid is corrosive, while discharging air, try not to spatter any brake fluid onto human body and vehicle finish.
4) Periodically inspect the brake fluid reservoir level of clutch master cylinder. If the brake fluid level is below Min mark, the brake fluid of a specified type should be added, until its level is between the scale marks of Min and Max.
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