SEAT Workshop Service and Repair Manuals

Balance shaft: removing and fitting t  Removing → Anchor t  Installing → 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	Torque wrench kit -SAT 8010-, see equivalent → Anchor

t	Spanner -T10061-, see equivalent → Anchor

t	Hose clamp -T20167-, see equivalent → Anchor

t	Wrench (e/c 24/27)

Removing –  Remove poly V-belt → Chapter. –  Remove toothed belt → Chapter. –  Remove sump → Chapter. –  Remove the seal flange on the pulley side → Chapter . –  Unscrew cover securing bolts . –  Release the cover from the shaft bracket

–  Immobilise the chain tension device with the counterhold -T20167-.-arrow- . –  Unscrew the pinion / idle pulley -1- from the shaft bracket. –  Unscrew the attachment bolts -2- from the chain tension device and remove the tension device. –  Remove the chain from the pinions and place it on a clean surface.   Note The wrench must be centred with respect to the counterweight of the balance shaft and perpendicular with respect to the balance shaft.

–  Secure the balance shaft as shown in the illustration using the wrench -1- (e/c 24/27).   Note The attachment bolt -2- for the counterweight should only be loosened, do not completely undo. –  Loosen the securing bolt -2- for the counterweight, using the wrench -T10061- . –  Unscrew the shaft bracket -3- from the engine block and remove it along with the balance shaft. –  Place the shaft bracket on a clean surface. –  Extract the securing bolt -2- from the counterweight. –  Remove the counterweight and pinion from the balance shaft. –  Rotate the balance shaft until it can be removed from its allotment. Installing –  Apply oil to the bearing surfaces in the balance shaft allotment. –  Fit the balance shaft in its allotment.   Note The installation of the pinion and the counterweight is only possible in one position. –  Fit the pinion and the counterweight on to the balance shaft. –  Manually tighten the attachment bolt for the counterweight and pinion. –  Manual tighten the shaft bracket to the engine block so that there is no play.   Note t  When fitting the shaft bracket, ensure that the adjustment sleeve is fitted to the engine block and that the O-ring is on the shaft bracket. t  Fit the shaft bracket so that on the pulley side, it is flush with the outside edge of the engine block. –  Tighten the shaft bracket with the balance shaft to the engine block and tighten to: 20 Nm. –  Ensure that the shaft bracket on the pulley side is flush with the outside edge of the engine block.   Note The wrench must be centred with respect to the counterweight of the balance shaft and perpendicular with respect to the balance shaft.

–  Secure the balance shaft as shown in the illustration using the wrench -1- (e/c 24/27).   Note The attachment bolt is an expansion bolt and must always be replaced. –  Tighten the attachment bolt -2- for the counterweight to the tightening torque: 100 Nm + 90° (1/4 turn).   Note The chain tension device attachment bolts are expansion bolts and must always be replaced. –  Fit the chain tension device and tighten to the tightening torque: 8 Nm + 90° (1/4 turn). –  Clean the chain with a lint free cloth.   Note t  When fitting the balance shaft, note the marks on the crankshaft, on the balance shaft and on the chain (the chain links are of a different colour and are marked). t  It is essential for correct operation that the rotation of the crankshaft and the balance shaft are synchronized.

–  Check if the mark -arrow- on the crankshaft is facing up.

–  Fit the chain to the pinion / crankshaft, pinion / oil pump and pinion / balance shaft. The marks on the pinion / crankshaft and the pinion / balance shaft must coincide with the coloured chain links -arrows- . –  Fit the pinion / return pulley on the chain and secure the pinion / return pulley to the shaft bracket and tighten to a torque: 20 Nm. –  Remove the counterhold -T20167- from the chain tension device.

–  Ensure the marks on the pinion / crankshaft and the pinion / balance shaft coincide with the coloured chain links -arrows- . –  Fit the seal flange on the pulley side → Chapter . –  Fit the cover of the balance shaft and tighten the bolts to a torque of: 5 Nm.   Note t  Before fitting the cover, apply oil to the oil pump O-ring and the protrusion inside the cover. t  Ensure that the seal is correctly seated inside the cover. t  When fitting the cover, ensure this is correctly inserted on the shaft bracket. –  Install sump → Chapter. –  Notched belt, fitting, tensioning → Chapter. –  Install poly V-belt → Chapter.