Maintenance work
When performing this test, the underside of the vehicle must be dry so that you can see leaks. Brake fluid also spreads under the dirt. Places dark from dampness or black dirt suggest a leak in these places.
The brake fluid level must always be between both marks (2 and 3) on the expansion tank (1) with brake fluid. Wrong when the level is too high, because. flowing back brake fluid (Possible with hot brakes) will flow out of the tank.
Check all connection points and connecting nodes; as well as brake calipers; and with a 1.6 liter eight-valve engine - brake support plates for drum brakes.
Brake hoses must not be damp, swollen or frayed. Otherwise, replace them.
The brake pipes are covered with a synthetic sheath for corrosion protection. If this spoy is damaged, a rust coating may appear. Therefore, never clean the pipelines with a screwdriver, sandpaper or wire brush, but use cold cleaning agents.
If the protective layer is damaged, apply a thin layer of anti-corrosion primer.
Corroded lines and squashed pipes should be replaced.
Do all bleed valves have protective caps? They are found on the brake calipers or inside the brake shields.
You can carry out a temporary check of the pressure in the brake system yourself:
Fully depress the brake pedal.
It should not be pressed through even after several minutes of full load, otherwise the cuff in the master brake cylinder is damaged.
Due to a defective cuff, the fluid level in the expansion tank does not decrease, fluid under pressure squeezes past the piston of the main brake cylinder to the side that is not under pressure.
Leaky areas in the cuffs of the brake caliper pistons you recognize by the dark spots around the cuffs.
In case of doubt, contact the workshop.
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