The Working Principle and Operational Instructions of the Double Cylinder Side Dump
Its principle is demonstrated by Diagram 9 and its operational instruction can be referred to in 渊樱冤尧
1. air tank
5. 3-gang switch
2. air control valve KQF34-B
3. Position control air valve XQF23
4. air control distributing valve
5. hydraulic oil tank
6. check valve
7. oil pump
8. oil tank
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OWNER爷S MANUAL
JAC HEAVY DUTY TRUCK
1. Lift the carriages
If you want to lift the carriages, just turn the air control valve (2) to the position proper for "lifting", afterwards, the pres鄄
surized oil, past the multi-functional distribution valve(numbered 4) straight into the bottom of every oil tub, and now, it's
available to do the lifting.
2. The Pausing
At the "pause" position as the air control valve is, it does not matter either the carriages are moving upwards or down鄄
wards, the pressurized oil, through distribution valve 4, will thus circulate for the dumping. It turns out that the output of
the pressurized oil would cease, and the non-return valve, set in the distribution valve, is forced to be closed, under the
effect of the oil pressure prevailing the tubs' bottom parts. Since there is no way for the oil to flow back, the carriages
have to stop at a certain place.
3. The Falling
Switch the air control valve to the "falling" part; then the hydraulic oil, with the help of the carriages' gravity, retreat to the
tank by way of the distribution valve. The carriages then begin to move downwards.
4. The Fixing of the Carriages
In the procedure of their rising, a pre-designated height is there for the carriages to push open the distribution valve 3.
And the pressurize oil find their way through the non-return valve back into the tank, the carriages hereafter stop the
motion.
5. Safe pressure regulation
The pressure of the multi-functional distributing valve is regulated when delivered. If the customers have special de鄄
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