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| Connect pressure tester -VAS 6550- with adapters -VAS 6550/1- and -VAS 6550/2- to fuel supply line. |
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| Make sure that drain tap (centre hose) is closed and cut-off valves (left and right) are open. |
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| Fuel pump will run for approx. 5 seconds and build up fuel pressure. |
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| Read fuel pressure off pressure tester -VAS 6550-. |
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| Specification: 4.0 ... 7.0 bar |
If specification is not obtained: |
Checking residual pressure |
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| Check system for leaks and check residual pressure by watching the drop in pressure on the pressure tester -VAS 6550-. |
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| After 10 minutes pressure should still be at least 3 bar. |
If the residual pressure drops below 3 bar: |
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| Check union between pressure tester -VAS 6550- and fuel supply line for leaks. |
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| Check pressure tester -VAS 6550- for leaks. |
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| Check fuel lines and their connections for leaks. |
Assembly is carried out in the reverse order; note the following: |
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| The ignition must be switched off. |
Note
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