Beetle L4-1.9L DSL Turbo (ALH) (1998)
Vacuum Pump: Service and Repair
Vacuum Pump For Brake Booster, Removing And Installing (Vehicles With Diesel Engine)
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:
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Vacuum pump cannot be repaired,
Installing
Note:
^
When installing vacuum pump be sure that follower engages correctly with camshaft.
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Install bolts (arrows -B-) on cylinder head flange and secure vacuum hose with clamp (arrow -A-)
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Check function of check valve -A-.
^
Air must pass through in direction of arrow.
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Valve must stay closed (no air passes through) in opposite direction.