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| Detach heat shield sleeve. |
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| Disconnect vacuum hose from vacuum unit and connect hand vacuum pump -VAS 6213- in its place. |
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| Operate hand vacuum pump to produce a vacuum. |
l
| The linkage of the exhaust gas recirculation cooler change-over should move -arrows-. |
If the linkage does not move or only moves jerkily: |
t
| The vacuum unit is defective. |
t
| The change-over flap for exhaust gas recirculation is sticking. |
Note Secure the heat insulation sleeve in the original position when installing. |
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