Skoda Workshop Service and Repair Manuals > Fabia Mk1 > Engine | 1.9/74 TDI Engine, Mechanics | Fuel supply, gas operation | Removing and installing parts of the fuel supply - Part 2

Removing and installing the tandem pump

Special tools and workshop equipment required

t	Torque wrench 5 to 50 Nm (e.g. -V.A.G 1551-)

t	Hand vacuum pump (e.g. -V.A.S. 6213-)

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.S 6213- to return-flow hose.

–	Operate the hand vacuum pump, until there is no more fuel from the return-flow hose.

Ensure that no fuel is drawn into the hand vacuum pump.

–	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 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 tandem pump -4-.

Installing

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.

–	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-.

–	Connect feed hose -1- (marked in white) to fuel filter.

–	Connect the hand vacuum pump (e. g. -V.A.S 6213-) to the return-flow hose -2- (blue marking) of the fuel filter.

–	Operate the hand vacuum pump, until fuel flows from the return-flow hose.

Ensure that no fuel is drawn into the hand vacuum pump.

–	Connect return-flow hose -2- (marked in blue) to fuel filter.

Skoda Workshop Service and Repair Manuals