skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

ABOUT US
Accelerator control > < Inspecting a tandem pump

Fabia Mk1

Removing and installing the tandem pump
Removing and installing the tandem pump
Special tools and workshop equipment required
t  Hand vacuum pump, e.g. -VAS 6213- or -V.A.G 1390-
t  Water drain reservoir, e.g. -V.A.G 1390/1-
  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.
  Caution
Observe instructions for re-installing a used tandem pump → Anchor.
Conditions
l  Ignition is switched off and ignition key is withdrawn.
Removing
   
–  Separate feed hose -1- (marked in white) and return-flow hose -2- (marked in blue) from the fuel filter.
–  Connect hand vacuum pump -V.A.G 1390- with water drain reservoir -V.A.G 1390/1- at return-flow hose.
–  Generate vacuum with hand vacuum pump until there is no more fuel from the return-flow pipe.
   Ensure that no fuel is drawn into the hand vacuum pump.
  S20-0109
–  Separate vacuum hose -1- for brake servo unit from tandem pump -4-.
–  Remove feed hose -2- (marked in white) at the tandem pump -4-.
–  Unscrew fixing screws -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 to 20 Nm.
–  Tighten the bottom fixing screws to 10 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 with the water drain reservoir onto the return flow hose -2- (blue marking) of the fuel filter.
–  Generate vacuum with hand vacuum pump until there is fuel from the return-flow pipe -3-.
   Ensure that no fuel is drawn into the hand vacuum pump.
–  Connect return-flow hose -2- (marked in blue) to fuel filter.
  S20-0109

Accelerator control > < Inspecting a tandem pump