Checking the belt tension
Note: An "old belt" is one that has been running on the engine for more than 5 minutes.
1. Check the belt for mechanical damage, wear, traces of oil and coolant.
2. Apply a force of 98 N (10 kg) and measure the belt deflection between the alternator and coolant pump pulleys.
Belt deflection:
- new belt-3.3-3.7 mm;
- the belt used is 4.2-4.7 mm.
3. If you have a special device, measure the belt tension following the recommendations in the device's operating manual.
Belt tension:
- new belt-637.4-735.5 N;
- the belt used is 392.3-490.3 N.
Note: When installing a new belt, adjust the belt deflection or tension to the values specified for the new belts. Then start the engine and let it run for 5 minutes. Stop the engine and adjust the belt deflection or tension to the values specified for the belts used.
Adjusting the belt tension
4. Loosen the adjusting (A) and locking (B) bolts. Move the generator to achieve the required belt tension and tighten the nuts.
5. Recheck the belt deflection or tension.
Replacing the belt
6. To replace the alternator drive belt, remove the coolant pump pulley by unscrewing the four screws.
7. Remove the alternator drive belt and replace it with a new one.