Hydraulic Unit - HANGCHA Mini Range CDD12-A2MJ-SZ Operation And Maintenance Manual

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2.2 Hydraulic unit

The truck adopts combined hydraulic unit(see fig.2-7), which mainly consists of DC motor,

coupling

flange, cartridge, pump

Adjust Safety Pressure of Overflow Valve

Generally, users do not need to adjust the safety pressure of overflow valve because it is set

already before delivery. Here below states the adjusting method of the safety pressure.

Procedure:

–

Park the truck securely.

–

Take down the hood.

Remove the oil choking of the pressure hole ①.

–

Connect the oil pressure gauge to the pressure hole ②.

–

Take out the cap of the overflow valve ③.

–

Loosen the nut of the main safety valve. Adjust the pressure and the bolts with a hexagon

wrench. The pressure of main safety valve increases when adjusting the screws clockwise;

and the pressure decreases when adjusting the screws counterclockwise ④.

–

Adjust the pressure to the requested range.

–

Once completed, apply back the fastened nut and the oil choking and clean it up.

tank and other components.

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