skoda Workshop Repair Guides

Skoda Workshop Service and Repair Manuals

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Removing and installing tandem pump, vehicles with engine identification characters BMM > < Removing and installing suction jet pump on vehicles with four-wheel drive

Octavia Mk2

Removing and installing tandem pump, vehicles with engine identification characters BKD, AZV
Removing and installing tandem pump, vehicles with engine identification characters BKD, AZV
Special tools and workshop equipment required
t  Diesel extractor, e.g. -VAS 5226-
t  Pliers for spring strap clamps
Removing
  WARNING
Under no circumstances must the tandem pump be disassembled, otherwise it can lead to malfunction of the vacuum part. This will result in a failure of the brake booster.
  Caution
Observe instructions for installing again a used tandem pump → Chapter.
  Note
t  Safety precautions when working on the fuel supply system → Chapter.
t  Observe the regulations concerning cleanliness when working on the fuel supply/injection system → Chapter.
–  Remove engine cover → Chapter.
   
–  Disconnect the fuel intake hose -1- (marked in white) and the fuel return-flow hose -2- (marked in blue) from the fuel filter.
–  Connect diesel extractor -VAS 5226- at fuel return-flow hose -2-.
–  Apply compressed air to diesel extractor -VAS 5226-.
–  Operate diesel extractor -VAS 5226- until no more fuel comes out of the fuel return-flow hose.
  S20-0339
–  Unplug connector -2- from air mass meter -G70-.
–  Disconnect ventilation hose -1-, suction hose -3- and air guide hose -5-.
–  Release screw -4- and remove air filter housing.
  S10-0304
–  Separate vacuum line -1- for brake servo unit from tandem pump -4-.
–  Disconnect the fuel intake hose -2- (marked in white) and the fuel return-flow hose -3- (marked in blue) from the tandem pump -4-.
–  Release fixing screws -arrows- and remove tandem pump -4- from cylinder head.
Install
Installation occurs in reverse order to removal. Pay attention to the following:
  Note
t  Ensure that the driver of the tandem pump is correctly seated in the camshaft.
t  Always replace the tandem pump seals.
–  Install tandem pump and tighten the fixing screws -arrows- to 20 Nm.
  S20-0285
–  Connect fuel intake hose -1- (marked in white) to fuel filter.
–  Connect diesel extractor -VAS 5226- to return-flow hose -2-.
–  Operate diesel extractor -VAS 5226- until fuel flows out of the fuel return-flow hose.
–  Connect fuel return-flow hose -2- (marked in blue) to fuel filter.
  S20-0339

Removing and installing tandem pump, vehicles with engine identification characters BMM > < Removing and installing suction jet pump on vehicles with four-wheel drive