Volkswagen Golf Service & Repair Manual: Instructions for checking

Volkswagen Golf Service & Repair Manual / Brake system / Brakes, hydraulics, regulator, servo / Vacuum system / Instructions for checking

The following instructions are intended to help you find the causes of problems effectively and objectively in the event of complaints about the brake servo or in the event of a so-called »hard brake pedal«.

This check relates to the following components:

Brake servo

Oil seal between brake master cylinder and brake servo.

Non-return valve

Vacuum hoses with connectors

Vacuum pump (if fitted)

When evaluating the measuring results, bear in mind that they will be influenced by the geographical location. The higher your location is above sea level, the lower the air pressure will be.

Before checking the vacuum system, please take note of the following prerequisites for checking:

Visual inspection of all vacuum hoses for damage (e.g. cracks or marten bite) and to check that they are correctly and firmly attached

Ensure cleanliness when working on vacuum system

Before starting work, clean engine compartment if necessary

Removing and installing vacuum sender -G608

Note The vacuum sender -G608- is only installed in selected petrol engines. Removing ...

Connecting vacuum gauge for brake servo -VAS 6721-

Special tools and workshop equipment required Vacuum gauge for brake servo -VAS 6721- ...

Other materials:

Removing air conditioner compressor from and installing to bracket, Golf and Golf Estate
Note In vehicles with start-stop system, note abort conditions: → Chapter Special tools and workshop equipment required Torque wrench -V.A.G 1331- (5 ...

Overview of fitting locations - operating and display unit, air conditioning system with electric/manual controls
Note A warning lamp in the instrument panel controls will indicate that the selected function is active. If the warning lamp does not light up after the AC button is pressed, a fault may be stored in the control ...

Handling refrigerants
WARNING Danger of freezing injuries. The refrigerant can emerge as liquid or as vapour. Do not open containers in which this refrigerant is present. ...