Removal
Warning! If your radio has an anti-theft code, check that you have the connection codes before disconnecting the battery.
Caution! On models from 1993 onwards, the airbag system is disabled if the battery is disconnected for an extended period of time. If the airbag warning light comes on and remains on after the battery is reconnected, contact a specialist workshop to restore the system to working order.
Elements of the drive mechanism of the gas distribution of a four-cylinder engine
1 – Upper timing belt casing; 2 – camshaft pulley; 3 – idle pulley; 4 – spring; 5 – oil pump pulley; 6 – Idle pulley No.2; 7 – crankshaft pulley; 8 – toothed belt guide; 9 – toothed belt; 10 – lower toothed belt casing; 11 – crankshaft drive belt pulley
1. Remove the ground cable from the battery.
2. Raise the front of the car and secure it on stands. Remove the right front wheel and wheel arch protector.
3. Drain the coolant from the cooling system.
4. Remove the spark plugs and drive belts.
5. Remove the generator together with the bracket.
6. Remove the power steering fluid reservoir and cruise control actuator mounting bolts and move them to the side.
7. Support the engine with a jack through a wooden block and remove the right support and support rod.
8. Unscrew the bolts securing the upper timing belt cover, move the wiring harness to the side and remove the upper cover together with the gasket.
9. Set the piston of the first cylinder to TDC in the compression stroke, while the small hole in the camshaft pulley should be aligned with the TDC mark on the bearing cap.
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10. If the timing belt is to be reinstalled, mark its relative position to the camshaft pulley and its direction of rotation.
11. Loosen the upper idler pulley mounting bolt and remove the spring. If it is necessary to replace the camshaft sealing ring or remove the cylinder head, slide the timing belt off the camshaft pulley without removing it from the crankshaft pulley.
12. If the camshaft pulley is worn or damaged, remove the head cover and, holding the camshaft from turning with a large wrench, unscrew the camshaft pulley mounting bolt.
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13. Secure the engine crankshaft from turning using the flywheel ring gear teeth and unscrew the crankshaft pulley mounting bolt.
14. Using a puller or pry bar, remove the pulley from the crankshaft.
15. Remove the lower timing belt cover together with the gasket and remove the belt from the crankshaft pulley.
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16. If the timing belt is to be reinstalled, mark the relative positions of the belt and the crankshaft pulley.
17. Remove the timing belt from the crankshaft pulley.
18. If the crankshaft pulley is worn or damaged, or the front crankshaft seal needs to be replaced, remove the pulley from the crankshaft.
Inspection
Caution! Do not twist or bend the timing belt. Avoid getting oil, coolant or fuel on the timing belt.
Warning! If the timing belt breaks while the engine is running, the pistons may have hit the valves, causing the valves to be bent. Check the valve clearances. The valve clearances on bent valves will be significantly larger than required.
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1. Remove the idler pulleys and check the condition of their bearings. Check the condition of the spring and check the length of the spring in a free state.
2. If the timing belt teeth have chipped, the distributor, water pump, oil pump or camshaft may be jammed.
3. If there is significant wear or delamination on the outer surface of the timing belt, check the condition of the idler pulley raceway.
4. If there is wear or damage on only one side of the belt, check the timing belt guide and timing belt pulley alignment.
5. If there are any defects on the toothed belt, it must be replaced. Periodic replacement of the toothed belt should be done after 100,000 km of the vehicle's mileage.
Installation
1. If the idler pulleys were removed, install them and the tension spring. While stretching the spring, move the upper idler pulley to the left as far as possible and temporarily secure with the bolt.
2. Check the alignment marks of the camshaft pulley and crankshaft.
3. Install the timing belt on the crankshaft pulleys, oil pump pulley, water pump pulley and idler pulleys in sequence. If the belt is being reinstalled, align the marks previously made on the timing belt and pulleys.
4. Install the timing belt guide to the crankshaft pulley with the convex side of the guide facing the crankshaft pulley.
5. Install the lower timing belt cover and crankshaft pulley.
6. Install the timing belt onto the camshaft pulley, keeping the front portion of the timing belt tensioned at all times.
7. Loosen the upper idler pulley mounting bolt. This will cause the spring to rotate the idler pulley and tension the timing belt.
8. If the timing belt tension spring is silver, slowly turn the crankshaft clockwise two full turns and tighten the upper idler pulley retaining bolt. If the timing belt tension spring is green, turn the crankshaft 1 7/8 turns and tighten the upper idler pulley retaining bolt.
9. Recheck the alignment of the timing marks.
10. Further installation is carried out in the reverse order of removal.