Maintenance work
- Remove the toothed belt only when the engine is cold.
- Remove the front toothed belt cover.
- Set the engine to the TDC position of ignition of the 1st cylinder. In 16 valve engines, additionally fix the camshaft pulleys in this position with locking bolts (KM-852 for 16V 1.6L engine or KM-953 for 16V 1.8 and 2.0L engines).
- 8-valve engine 1.6 l: turn the tensioner pulley of the toothed belt up with a loose key, counteracting the force of the spring, so that the holes in the movable part of the tensioning roller and in its base plate coincide
- Lock the idler pulley in this position with a suitable pin or drill.
- 16V: Loosen the tensioning roller fixing bolt and turn the adjusting eccentric clockwise until the arrow on the tensioning roller touches the left stop.
- For everyone: remove the loose toothed belt from the belt pulleys.
- On 16V engines, check the mounting position of the water pump, see section «Checking the toothed belt tension».
- Fit the new belt so that the traction side (between camshaft pulley and crankshaft pulley) was stretched. If the position of the crankshaft and camshaft pulleys has not changed, then the valve timing has not yet been knocked down.
- However, for the sake of safety, you need to check this before the final installation.
- Check toothed belt tension.
The pictures show the location of the toothed belt, on the left - in the 8-valve engine - 1.6 l, in the center in the 16-valve engine 1.6 l and on the right - in the 1.8 / 2.0 l engine. The correct tension of the toothed belt in all engines is ensured by an automatic tensioner roller between the water pump and the crankshaft. The arrow in each case shows the traction side of the toothed belt.
The figures show a 1.6 liter 8-valve engine.
Left:With the correct tension of the toothed belt, the arrow of the movable part of the tension roller is opposite the mark on the base plate.
On right: To adjust the toothed belt tension, slightly loosen the water pump mounting bolts and turn the eccentrically located pump clockwise with the KM-421-A tool accordingly.
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