Insufficient belt tension impairs airflow to the radiator of the cooling system and leads to engine overheating and increased belt wear

If the belt is too tight, the bearings of the fan drive and tension roller may fail.

If the tension is correctly adjusted, the belt should sag 8-10 mm when a force of 40 N (4.0 kgf) is applied midway between the fan pulley and the tension roller.

The belt tension is adjusted by moving the tension roller.

Replacing and adjusting the tension of drive belts for units with a ZMZ-402 engine

We recommend replacing both accessory drive belts if at least one of them fails.

How to change drive belts of Gazelle carsHow to replace the drive belts of the Gazelle car

Using the “13” head, we loosen the nut of the upper fastening of the idler pulley bracket (the cooling system hoses have been removed for clarity).

Using the “14” key, loosen the lower fastening of the tension pulley bracket, holding the bolt with the “12” key

How to change drive belts of Gazelle carsHow to change drive belts for Gazelle cars

We bring the idler pulley bracket to the block and remove the belt from the pulleys

Having passed the belt between the fan impeller and the radiator, remove it

Loosen the top and bottom fasteners of the generator

We bring the generator to the cylinder block.

Remove the belt from the pulleys by passing it through the fan impeller, similar to removing the fan drive belt.

We put new belts on the pulleys.

How to change drive belts of Gazelle cars

We tighten the fan drive belt, moving the tension pulley away from the cylinder block, and tighten the upper and lower fasteners of the tension pulley.

We tighten the generator drive belt in the same way, moving the generator away from the cylinder block, after which we tighten the upper and lower generator mounts.

Check the adjustment of the belt tension by applying a force of 4 kgf to the middle of the upper branches.

How to change drive belts of Gazelle cars

The deflection of the alternator drive belt should be 8-10 mm, and the fan drive belt should be 7-9 mm.

If necessary, repeat the adjustment.

Replacing and adjusting the tension of the drive belt for units with a ZMZ-406 engine

How to replace drive belts on GazelleHow to change drive belts of Gazelle cars

Using the “12” key, loosen the tightening bolt of the tension roller (for clarity, the engine radiator is removed).

Weaken the belt tension by turning the key "by 10", counterclockwise the tension roller bolt

How to change drive belts of Gazelle cars

Remove the belt from the pulleys.

How to replace drive belts on Gazelle

Installing a new belt.

By rotating the tension roller bolt, we achieve a belt deflection of 15 mm under a load of 8 kgf applied in the middle of the horizontal drive branch (between the generator and pump pulleys)

Tighten the tension roller mounting bolt.