| Checking the brake servo vacuum system |
| The inspection instructions listed in the following are provided to support with the effective and objective fault finding in event of complaints on the brake servo. |
| This inspection refers to the following components: |
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| Seal between brake master cylinder and brake servo |
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| Vacuum hoses with connectors |
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| Vacuum pump (when installed) |
| When inspecting, the measuring values must be observed that are influenced by the geographical location. The higher the measuring location is above sea level, the lower the air pressure. |
| Before inspecting the vacuum system, the following basic requirements for the inspection have to be noted under all circumstances: |
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| Visual inspection of all vacuum hose for damage (e.g. cracks or vermin bites - in some countries) and their tight fit. |
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| Rules of cleanliness to be taken into account when working on the vacuum system. |
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| If necessary, the engine compartment must be cleaned before commencing work. |
| Special tools and workshop equipment required |
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