Workshop Manuals Factory service & repair Mercedes Benz
01 Relays and Modules02 Sensors and Switches03 Maintenance04 Engine, Cooling and Exhaust05 Powertrain Management06 Transmission and Drivetrain07 Brakes and Traction Control08 Starting and Charging09 Power and Ground Distribution10 Steering and Suspension11 Heating and Air Conditioning12 Restraint Systems13 Accessories and Optional Equipment14 Body and Frame15 Cruise Control16 Instrument Panel, Gauges and Warning Indicators17 Lighting and Horns18 Windows and Glass19 Wiper and Washer Systems
Mercedes Benz 300SEL (126.025) L6-3.0L (103.981) (1988)03 · Maintenance
03 · Maintenance

Brake Bleeding: Service and Repair

Make
Mercedes Benz
Model
300 Series 300SEL (126.025)
Engine
L6-3.0L (103.981)
Year
1988
Section
Brake Bleeding › Service and Repair
MaintenanceService and Repair · page 1 of 3
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Brake Bleeding: Service and Repair

Bleeding brake system or replacing brake fluid

A. Vehicles without ASR

Screw off cap and drain chambers in brake fluid reservoir down to a brake fluid level of approx. 10 mm. Observe note on brake fluid
Do not completely drain brake fluid reservoir to prevent air from getting into brake system.

With bleeding unit

Renew brake fluid or bleed brake system with filling and bleeding unit
Observe operating instructions of unit manufacturer.
Allow approx. 80 cc of brake fluid to flow out at each brake caliper so that the lines and pressure cylinders in the brake calipers are filled with new
brake fluid. Start bleeding at right rear brake cylinder.

Without bleeding unit

Fill brake fluid reservoir up to "maximum mark" with brake fluid. Pump old brake fluid out of each caliper by pumping brake pedal

Note: Close bleed screw each time brake pedal is depressed and allow brake pedal to return slowly so that air is not sucked in through the bleed

screw threads and a sufficient quantity of brake fluid can flow back into the system out of the brake fluid reservoir. 

Start bleeding at right rear brake cylinder.
Correct brake fluid level in brake fluid reservoir.
Screw on cap

Note:

Assure that the vent hole in the cap (arrow) is not clogged.

B. Vehicles with ASR 1st version

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Parts & tools for this job For 1988 Mercedes-Benz 300 Series 3.0L

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