| Checking brake servo vacuum system |
| 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: |
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| Oil seal between brake master cylinder and brake servo. |
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| Vacuum hoses with connectors |
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| Vacuum pump (if there is one) |
| 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: |
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| Visual inspection of all vacuum hoses for damage (e.g. cracks or marten bite) and to check that they are correctly and firmly attached |
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| Ensure cleanliness when working on vacuum system |
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| Before starting work, clean engine compartment if necessary |
| Special tools and workshop equipment required |
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