The fluid in the clutch system needs to be replaced after 2 years

We pump the hydraulic drive when replacing the working fluid, as well as to remove air from the system that has entered it during the repair or replacement of individual components

We work together with an assistant

How to pump and replace the hydraulic clutch fluid of the GAZ-2705

Remove the protective cap from the bleeder fitting of the hydraulic drive working cylinder

How to pump and replace the hydraulic clutch fluid of the GAZ-2705

Place a hose (preferably transparent) 30–50 cm long onto the fitting, immersing its end in a container filled with working fluid.

The assistant presses the clutch pedal three to four times at intervals of 1–2 seconds, and then holds it pressed.

How to pump and replace the hydraulic clutch fluid of the GAZ-2705

Using a 10mm wrench, unscrew the bleeder fitting ⅓ - ½ turn.

In this case, part of the working fluid and air bubbles are forced into the container, and the clutch pedal is lowered to the floor.

Without releasing the pedal, screw in the bleeder fitting and repeat the operation until bubbles completely stop coming out of the hose.

How to pump and replace the hydraulic clutch fluid of the GAZ-2705

At the same time, we constantly monitor the level of working fluid in the master cylinder reservoir and add it if necessary.

To completely replace the working fluid, unscrew the bleeder fitting and press the clutch pedal until the working fluid stops flowing out of the hose.

We screw in the bleeder fitting and pour fresh working fluid into the master cylinder reservoir up to the “MAX” mark, after which we bleed the hydraulic drive as indicated above.

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After disassembling, thoroughly rinse all gearbox parts in kerosene, blow with compressed air and inspect

Possible pump malfunctions may include: leakage of the diaphragm and valves, decreased elasticity or breakage of the diaphragm spring, wear of pump drive parts