SEAT Workshop Service and Repair Manuals

Pre-wiring for injector-pump unit and spark plugs: removing and fitting t  Removing → Anchor t  Fitting → Anchor t  Tightening torque → Anchor Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter. Special tools and workshop equipment required

t  Extractor -T10312-, see equivalent → Anchor

t  Wrench -T10310-, see equivalent → Anchor Removing   Caution The fitting/removal of the pre-wiring can only be carried out by bolting the retainer clips. If a cable channel comes loose from the retainer clips, the channel will bend and, as play increases, the cable may break. This is also true when replacing the injector-pump unit, as with any work which does not require the total removal of the central connector.   Note For the removal of the piezoelectric element connectors for the injector pump only the special extractor -T10312- should be used.

Engine cover (version 1): –  Take out the oil dipstick -1- from its guide tube. –  Lift the engine cover sideways -arrows 2- and extract to the front -arrow 3-. –  Replace the oil dipstick in the guide tube.

Engine cover (version 2): –  Detach the outer -1- and inner -2- engine covers, by pulling them evenly upwards. All vehicles (continued): –  Dismount the cylinder head cover engine codes (AZV BKD) → Chapter engine codes (BMN) → Chapter

–  Pull the release pin -arrow 1- and unscrew knurled nut -arrow 2-. –  Disconnect the centre connector for the injector pump units and the glow plugs.

–  Fit the wrench -T10310- on the adapter ring and release by turning through 90° (1/4 turn) in the -direction of the arrow-.

–  Gently pull the safety clip -1- upwards using a screwdriver and press the central connector -2- inwards.

–  Move the extractor -T10312- sideways on the injector pump connectors and remove them in the -direction of the arrow-. If the connector is an older version, you will have to use a pincer with long prongs.

–  Extract the connections of the glow plugs -1-. Undo the bolts -2- on the steel retainers and completely remove the pre-wiring. Fitting Installation is carried out in the reverse order of removing, when doing this note the following. –  Fit the pre-wiring and tighten the bolts to a torque of 10 Nm.

–  Guide the central connector through the opening in the bearing cap module, ensuring that the retainer clip is correctly fitted -arrows-.

–  Fit the adapter ring (“long” coloured collar -arrow- indicates 12 o'clock).

–  Fit the wrench -T10310- on the adapter ring and fasten by turning through 90° (1/4 turn) in the -opposite direction to the arrow-.   Note If the adapter ring has been correctly fitted, the “short” coloured collar faces 12 o'clock. –  Mount the central connector on the cylinder head and lock. –  Mount the cylinder head, engine codes (AZV BKD) → Chapter engine code (BMN) → Chapter Tightening torque

Component	Nm
Electrical wiring unit to the cylinder head	10