1 - bolt, 20–27 Nm; 2 – tension mechanism spring; 3 - toothed belt tension roller; 4 - the free side of the toothed belt; 5 - bolt, 80–100 Nm; 6 - camshaft pulley; 7 - locating pin; 8 - the side of the tension of the toothed belt; 9 - installation mark (pointer) on the front cover; 10 - alignment mark on the crankshaft pulley; 11 - 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 a casing of a gear belt.
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 a gear 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 a roller of the mechanism of a tension of a gear belt.
Examination
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.
1. Check the toothed belt for damage, wear, delamination, 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, and the fibers, cord and rubber base become visible |  |
| 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 |
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 idle pulley, as well as the absence of extraneous noise during rotation.
Installing the toothed belt tensioner
1. Temporarily secure the timing belt tensioner in the retracted position, as close to the water pump as possible.
2. After installing the tensioner, the alignment marks on the pulleys of the camshaft and crankshaft must be aligned with the pointers.
Turn the engine crankshaft so that the number one piston is at TDC on the compression stroke.
Order of execution
Warning! Make sure the bushing is installed correctly with the chamfer facing the front of the motor.
1. When installing the camshaft pulley, the locating pin must fit into the hole in the pulley.
2. Install the toothed belt so that there is no slack on the tension side.
Installation
1. Install the bushing and crankshaft pulley as shown in the figure. 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. 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 to TDC on the compression stroke.
 |  |
4. When installing the toothed 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.
5. Lock the tensioner attached to the water pump.
6. Install the toothed belt on the crankshaft pulley.
7. Install the toothed belt on the camshaft pulley, making sure that it does not sag on the tension side.
8. 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.
9. Tighten bolts 1 and 2 fastening the tension mechanism in the same order.
10. 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.
11. In the same order, loosen the bolts 1 and 2 fastening the toothed belt tensioner.
12. Tighten bolts 1 and 2 fastening the tension mechanism in the same order.
Tightening torque: 20–27 Nm
13. 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.
14. Establish casings of a gear belt.
Tightening torque: 10–12 Nm
15. Install the crankshaft pulley.
16. Install the poly V-belt of the fan drive and adjust its tension.
17. Install the water pump pulley.
18. Install the V-ribbed belt and adjust its tension.