Jetta GLS L4-1.9L DSL Turbo (ALH) (2001)
Vacuum Pump: Service and Repair
Vacuum pump for brake booster
Removing
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Remove retainer for wiring harness from vacuum pump.
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Loosen vacuum hose clamp (arrow-A-) and remove hose from pump.
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Remove bolts (arrow-B-) on flange.
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Remove vacuum pump.
Note: The vacuum pump cannot be repaired.
Installing
Note: When installing the vacuum pump be sure that the follower engages correctly with the camshaft.
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Install bolts (arrows -B-) on cylinder head flange.
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Secure vacuum hose with clamp (arrow -A-).
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Check function of check valve -A-.
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Air must pass through in direction of arrow
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Valve must remain closed in opposite direction
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Ensure that check valve is installed correctly.