SEAT Workshop Service and Repair Manuals

Removing, installing and tensioning toothed belt Removing → Anchor Installing → Anchor Tightening torques → 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	Hose clamp -T10050-, see equivalent → Anchor

t	Hose clamp -T10115-, see equivalent → Anchor

t	Hose clamp -T20018B-, see equivalent → Anchor

t	Hose clamp -T20102-, see equivalent → Anchor

t	Base -T20174-, see equivalent → Anchor

t  Socket -U 30025F-, see equivalent → Anchor Removing   Note Adjustment work on the timing belt should only be done when the engine is cold, given that the position of the indicator arm on the tension device will vary depending on the engine temperature.

–  Detach the outer -1- and inner -2- engine covers, by pulling them evenly upwards.

–  Separate the clamps -arrows- and remove the supercharger hose -1-. –  Disconnect connection -3- from the intake manifold air pressure sender -G71-. –  Unscrew the bolts -2- and -4- to free the bottom of the super charger rigid hose. –  Remove the air hose between the turbocharger and the air filter → Item. –  Remove poly V-belt → Chapter. –  Remove Poly V-belt tension device → Item.

–  Clip out the fuel supply lines -1- and the fuel return lines -2- by pressing in the retainers. –  Separate the control valve from the clip -arrow- on the coolant expansion tank. –  Unbolt the coolant expansion tank (without removing hoses). –  Move the fuel lines and the expansion tank to one side.

–  Position the support -U-30025E- and suspend the motor in the installation position.

–  Disconnect the electrical connector -arrow- for temperature sender 1 of the exhaust gases -G450-. –  Undo the nuts -1- and set to one side the exhaust gas pressure sensor 1 -G450- together with the pressure pipes.

–  Release the securing bolts -arrows- of the engine assembly. –  Remove upper toothed belt guard.

–  Remove the fastening bolts of the console to the engine block -arrows-.

–  Release the fasteners -arrows- to remove the central soundproofing panel. –  Remove front right hand side wheel housing liner → Bodywork, exterior fitting work; Rep. gr.63. –  Remove the supercharger air pipe between the intercooler and the turbocharger → Chapter. –  Remove vibration damper / belt pulley. –  Remove timing belt guard centre and lower parts. –  Crankshaft at TDC cyl. 1 TDC.   Note

For this, rotate the crankshaft so the mark on the crankshaft pulley is upwards and the arrow on the timing belt is aligned at the back with the protrusions on the generator wheel of the hub -arrows- . –  Immobilise the hub using the retention tool -T20102-. –  Immobilise the crankshaft notched belt wheel using the crankshaft stop -T10050-.   Note

t  The crankshaft stop -T10050- can only be fitted over the crankshaft notched belt wheel from the front side of the notched belt. t  The marks on the notched belt wheel -2- and on the crankshaft stop -T10050--1-should face each other. For this, the crankshaft stop -T10050- journal should match the opening in the sealing flange. –  Mark the notched belt direction of rotation with chalk or felt pen.

–  Loosen the attachment bolts -1- from the camshaft wheel with the counterhold -T20018B- until the camshaft sprocket can turn loosely in the extended holes.

–  Unfasten nut of tensioning roller. –  Turn the off-centre adjustment with an allen key -anti-clockwise- until the tension roller can be secured with the locking pin -T10115- .

–  Next turn the Allen key -in the direction of the arrow- as far as possible and hand tighten the fastening nut -1-. –  First remove the timing belt from the coolant pump and then remove it from the other cogwheels.

Installing   Note t  Adjustment work on the timing belt should only be done when the engine is cold, given that the position of the indicator arm on the tension device will vary depending on the engine temperature. t  Ensure that the tension roller is correctly placed on the rear protection for the timing belt -arrow- . t  The tension roller should be fixed in the same position as for removal.

–  Rotate the camshaft wheel in its extended holes in the direction of the -arrow- to the limit. –  Fit the timing belt on the crankshaft, the tension roller, the camshaft wheels, the idle wheel and, lastly, onto the timing belt wheel of the coolant pump.

–  Unfasten nut of tensioning roller. –  Turn the off-centre adjustment with an allen key -anti-clockwise- until the locking pin -T10115- can be removed.

–  Rotate the tension roller -clockwise-, until the indicator arm is in a centre position of the plate groove -arrow- .   Note

When the attachment nuts are tightened, the pointer turns -arrow- from the opening of the baseplate to maximum 5 mm to the right. This position should not be corrected, given that the belt sits into place with time.   Note t  Ensure that the attachment nut does not also rotate. t  Use the correct tightening torque to avoid damages to the engine when tightening the tensioner. –  Hold the tension roller in this position and tighten the tension roller nut to 20 Nm + 45° (1/8 turn).   Note Use the correct tightening torque to avoid damages to the engine when tightening the tensioner. –  Extract the counterhold -T20102-.

–  Tighten the camshaft sprocket securing bolts -1- to 25 Nm, blocking any rotation using the counterhold -T20018B-. –  Extract the counterhold -T10050-. –  Continue to rotate the crankshaft by two revolutions in the direction of rotation of the engine until the crankshaft is stationary once more 1. –  Insert the crankshaft retention tool -T10050- into the sprocket, sliding it in until it enters the sealing flange.   Note t  The crankshaft stop -T10050- can only be fitted over the crankshaft notched belt wheel from the front side of the notched belt. t  The crankshaft stop -T10050- must enter into the hole in the sealing flange for the rotation. t  The position for inserting the crankshaft locking tool -T10050- cannot be adjusted by turning the crankshaft back. t  If the crankshaft has been rotated beyond TDC for cylinder 1 and the crankshaft stop -T10050- could not be pushed into the sealing flange at all, turn the crankshaft back a 1/4 turn so that the crankshaft can be placed back onto the TDC for cylinder in the engines direction of rotation again. –  After inserting the counterhold -T10050-, check that the camshaft cogwheel can be immobilised with the retention tool -T20102-. If the hub cannot be locked: –  Remove the stub of the retention tool -T10050- from the hole in the sealing flange and turn the crankshaft until the hub can be locked with the pin.

–  Loosen the bolts -1- that hold the camshaft wheel.

–  Turn crankshaft in the opposite direction of engine rotation until the crankshaft counterhold -T10050- stub is just opposite the sealing flange hole -arrow- and insert it. –  Tighten the bolts attaching the wheel to the camshaft to 25 Nm. –  Remove the retention tool -T20102- and the crankshaft positioning device -T10050-. –  Rotate the crankshaft twice in the normal direction of rotation so that the cylinder 1 is again at the TDC position. –  Repeat the previous verification.

–  Fit the console on the cylinder block and retighten the bolts -arrows- to 45 Nm.   Note All the bolts on the console should be tightened to the required torque prior to mounting the engine support assembly. –  Fit the engine assembly support and tighten to the tightening torque: 20 Nm + 90° (1/4 turn).

–  Tighten the engine support assembly, joining the contact surfaces using the engine support -U-30025E-, tightening torque: 30 Nm + 90° (1/4 turn) . –  Install centre notched belt guard. –  Fit the lower timing belt protection and the vibration damper/crankshaft pulley. –  Install poly V-belt → Chapter. –  Install Poly V-belt tension device → Item. –  Install upper toothed belt guard. –  Remove the support -U-30025E-. –  Fit the intercooler/turbocharger and the intercooler/suction mouth coupling tubes. –  Fill up coolant → Chapter. Installation is carried out in reverse order. Tightening torques

Components:		Nm
Notched belt tensioning roller to cylinder head		20 + 45° → Remark
Camshaft pinion to bin		25
Bottom section of notched belt guard to cylinder block		10 → Remark
Centre section of notched belt guard to cylinder block		10 → Remark
Vibration damper to the crankshaft wheel		10 + 90° → Remark → Remark
Console to engine block		45
Engine support to console		30 + 90° → Remark → Remark

1)  45° is the equivalent of (1/8 turn) 2)  Fit with locking fluid; locking fluid → Parts catalogue 3)  Renew bolts 4)  90° is the equivalent of (1/4 turn)