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Skoda Workshop Service and Repair Manuals

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Repairing the accelerator control > < Inspecting a tandem pump

Fabia Mk1

Removing and installing the tandem pump
Removing and installing the tandem pump
  WARNING
The tandem pump must not be disassembled, otherwise the proper operation of the pump vacuum part is no longer assured. This will result in a failure of the brake booster.
Special tools and workshop equipment required
t  Hand vacuum pump, e.g. -VAS 6213- or -VAS 5226-
t  Pliers for spring strap clamps
Removing
   
–  Separate feed hose -1- (marked in white) and return-flow hose -2- (marked in blue) from the fuel filter.
–  Connect hand vacuum pump to return-flow hose -2-.
–  Generate vacuum with hand vacuum pump until there is no more fuel from the return-flow pipe.
  Note
Ensure that no fuel is drawn into the hand vacuum pump.
  S20-0284
–  Disconnect vacuum hose -1- for brake servo unit from tandem pump -4-.
–  Remove feed hose -2- (marked in white) at the tandem pump -4-.
–  Unscrew securing bolts -arrows-.
–  Remove tandem pump -4- from cylinder head.
–  Pull tandem pump -4- upwards, separate return-flow hose -3- (marked in blue) and remove the tandem pump -4-.
Install
Installation is performed in the reverse order, pay attention to the following points:
  Note
t  Ensure the tandem pump coupling is correctly inserted into the camshaft.
t  Always replace the tandem pump seals.
  N15-0254
–  Connect return-flow hose -3- (marked in blue) to the return-flow coupling of the tandem pump.
–  Install tandem pump and tighten the top fixing screws M8 to 20 Nm.
–  Tighten M6 fixing screws to 8 Nm.
–  Connect the feed hose -2- (marked in white) to the feed connection and the vacuum hose -1- of the brake servo unit to the tandem pump -4-.
  N15-0254
–  Connect feed hose -1- (marked in white) to fuel filter.
–  Connect the hand vacuum pump (e.g. -VAS 6213- or -VAS 5226-) to the return-flow hose -2- (blue marking) of the fuel filter.
–  Generate vacuum with hand vacuum pump until fuel flows out of the return-flow hose.
  Note
Ensure that no fuel is drawn into the hand vacuum pump.
–  Connect return-flow hose -2- (marked in blue) to fuel filter.
  S20-0284

Repairing the accelerator control > < Inspecting a tandem pump