SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cylinder Diesel engine (2.0 litre engine, Common Rail, Generation II) | Enginecrankshaft group, pistons | Dismantling and assembling engine | Poly V-belt drive with tensioning roller and air conditioner compressor

Removing and installing poly V-belt

Removing

–	Remove noise insulation → General body repairs, exterior; Rep. gr.50.

Caution

If a used belt runs in the opposite direction when it is refitted, this can cause breakage.

Before removing, mark direction of rotation of poly V-belt with chalk or felt-tipped pen for re-installation.

–	To slacken poly V-belt, unscrew tensioning screw -arrow-, remove tensioning roller.

–	Remove poly V-belt.

Installing

Installation is carried out in the reverse order; note the following:

Note

t	Renew bolt for tensioning roller.

t	Before installing poly V-belt, ensure that all ancillaries (alternator and air conditioner compressor) are secured tightly.

–	Fit poly V-belt on poly V-belt pulleys.

1 -	Vibration damper

2 -	Tensioning roller

3 -	Alternator

4 -	Air conditioner compressor

–	Coat guide surfaces of tensioning roller with solid lubricating paste with a brush; solid lubricating paste → Parts Catalogue.

–	Insert tensioning roller with its pin into intended guide on bracket for ancillaries.

–	Tighten bolt for tensioning roller → Fig..

–	Check whether end of bolt for tension roller projects over tensioning roller running surface by dimension -a-.

l	Dimension -a- = approx. 2.5 mm

l	This ensures that the bolt has been tightened to its end stop.

–	Start engine and check that poly V-belt runs properly.

–	Install noise insulation → General body repairs, exterior; Rep. gr.50.