Elements of the main brake cylinder: 1 - tank cover with a sensor for insufficient liquid level in the tank; 2 - reservoir of hydraulic brakes and clutch; 3 — the main brake cylinder; 4 - pressure regulator; 5 - sealing bushings
We carry out work when replacing the main brake cylinder and removing the vacuum brake booster.
Releasing two latches..
... disconnect the block of wires from the working fluid level sensor.
Unscrewing the tank cap, remove it together with the liquid level sensor.
We select the liquid from the tank with a rubber pear and wrap the lid.
Putting a rag underneath..
... holding the pressure regulator fitting with a "21" wrench, a special "10" wrench for the brake pipe fittings, unscrew the rear brake pipe fittings.
Using a special "10" wrench for the brake pipe fittings, unscrew the fittings of the front brake pipes.
We remove the pipes from the main brake cylinder.
Using pliers, we unclench the clamp that secures the hose for supplying the working fluid to the clutch master cylinder..
... and remove it from the tank pipe.
Using the "13" key, we unscrew the two nuts securing the cylinder to the vacuum brake booster..
... and remove the main brake cylinder assembly with the hydraulic reservoir.
The connection between the master brake cylinder and the vacuum brake booster is sealed with a rubber gasket.
To check its condition and possible replacement..
... remove the pusher from the opening of the vacuum booster..
...and a rubber gasket.
Install the brake master cylinder in reverse order.
Bleeding the hydraulic brake system (see Bleeding the hydraulic drive of the brake system).
To replace the reservoir, unscrew the cap and remove it together with the liquid level sensor.
With a rubber pear, we select the liquid from the tank.
We disconnect from the tank the hose for supplying the working fluid to the clutch master cylinder (see above).
We pry with a screwdriver and, overcoming the resistance of the rubber connecting sleeves..
... remove the tank.
To replace the connecting sleeve, we squeeze the upper edge of the sleeve with our fingers..
... and take it out of the hole of the master brake cylinder.
Similarly, we take out the other connecting sleeve.
Install the tank in reverse order.
After installation, we pump the hydraulic brake system (see Bleeding the hydraulic drive of the brake system).