1 - front cover; 2 - bolt, 20–27 Nm; 3 - spacer sleeve of the toothed belt tensioner; 4 – tension mechanism spring; 5 - toothed belt tension roller; 6 - camshaft pulley; 7 - installation mark (pointer); 8 - hole of the installation mark; 9 - the free side of the toothed belt; 10 - locating pin; 11 - bolt, 80–100 Nm; 12 - guide roller; 13 - bolt, 43–55 Nm; 14 – the side of a tension of a gear belt; 15 - setting mark (pointer) on the front cover; 16 - alignment mark on the crankshaft pulley; 17 - crankshaft pulley.
Withdrawal
1. Loosen the water pump pulley bolt.
2. Loosen the alternator mounting bolt.
3. Remove the water pump pulley and belt.
4. Remove the crankshaft pulley.
5. Remove the toothed belt cover.
6. Move the toothed belt tensioner to the water pump and temporarily secure it in this position.
7. Turn out a bolt of fastening of a pulley of a camshaft.
8. Remove the camshaft pulley.
9. Remove the toothed belt.
Warning! Mark the direction of rotation of the toothed belt to reinstall it in its original position.
10. Turn out a bolt of fastening of a pulley of a cranked shaft. Remove the crankshaft pulley and bushing.
11. Remove the toothed belt tensioner pulley.
Examination
Pulleys and roller of the toothed belt tensioner
1. Check the camshaft pulley, crankshaft pulley, idler pulley and idler pulley for uneven wear, cracks or damage.
2. Check the ease and smoothness of rotation of the roller of the tension mechanism and the idler pulley, as well as the absence of extraneous noise during rotation.
Toothed belt
Warning! Strongly do not bend a gear belt and do not change the direction of its rotation. Do not allow oil and lubricant to come into contact with the toothed belt as this will cause it to break.
Order of execution
1. Check the toothed belt for damage, wear, splitting, cracks in the teeth and at the base of the teeth, as well as defects on the ends and back of the belt.
2. If the following defects are present, replace the toothed belt.
Description | Defect |
1. Rigid back surface of the toothed belt. The surface has a glossy appearance The hardness of the surface is such that the nail does not leave marks on the belt | |
2. Cracks on the reverse surface of the toothed belt | |
3. Cracked or split toothed belt | |
4. Heavily worn teeth The side of the tooth is worn out, showing the fibers, cord and rubber base | |
5. Heavily worn teeth (last stage) The side of the tooth is worn out, at the same time scuffs become visible and the thickness of the tooth is reduced | |
6. Cracks at the base of the teeth | |
7. Missing tooth | |
8. Strong wear on one side of the belt | |
9. Cracks on the side of the toothed belt |
Installation
1. Install bushing and crankshaft pulley as shown. Pay attention to the direction of their installation
Tightening torque: 140–150 Nm
2. Install the camshaft pulley and secure with a bolt, tightening it to the required torque.
Tightening torque: 80–100 Nm
3. Install the guide roller and secure with the bolt, tightening it to the required torque.
Tightening torque: 43–55 Nm
4. Align the alignment marks on the pulleys of the camshaft and crankshaft with the pointers, while the piston of the first cylinder should be set at TDC on the compression stroke.
5. When installing the timing belt tensioner, install the tensioner, spring and spacer first. Temporarily tighten the bolts. Then, temporarily compress the tensioner by inserting the bolt into the elongated hole. Install the rear end of the flat spring against the front cover as shown.
6. Fix the tension mechanism assigned to the water pump.
7. Install the toothed belt onto the crankshaft pulley.
8. Install the toothed belt on the camshaft pulley, making sure that there is no slack on the tension side.
9. Loosen the bolts 1 and 2 fastening the tension mechanism in the sequence shown in the figure, while the spring of the toothed belt tension mechanism will open.
10. Tighten bolts 1 and 2 fastening the tension mechanism in the same order.
11. Turn the engine crankshaft clockwise two full turns and align the mark on the crankshaft timing belt pulley with the pointer on the engine block. Check that the mark on the camshaft pulley is aligned with the pointer on the cylinder head cover.
Warning! Do not turn the engine crankshaft counterclockwise.
12. Loosen bolts 1 and 2 of the toothed belt tensioner in the same order.
13. Tighten bolts 1 and 2 fastening the tension mechanism in the same order.
Tightening torque: 20–27 Nm
14. Recheck the toothed belt tension. When pressing on the tensioned branch of the toothed belt with a force of 49 N, the toothed belt should bend to the center of the head of the tensioner fastening bolt.
15. Install the toothed belt guards.
Tightening torque: 8–10 Nm
16. Install the crankshaft pulley.
Tightening torque: 140–150 Nm
17. Install the V-ribbed fan drive belt and adjust its tension.
18. Install the water pump pulley.
19. Install the V-ribbed belt and adjust its tension.