Preparing the car for the task

Loosen bolt 1 two or three turns.

Unscrew the adjusting bolt 2, loosen the belt tension and remove it.

Inspect the belt.

Alternator belt ZMZ-406 for GAZ-2705

If it has cracks, rubber delamination, tears, dirt deposits between the ribs, etc., replace the belt. Inspect the pulleys.

Clean or replace the pulleys if they are dirty or damaged.

If it is necessary to remove the tensioner, unscrew the three bolts 3, at the same time, in order to make it more convenient to unscrew the bolt under the roller, move the roller up.

Details:

Replacing and adjusting the tension of the drive belt

Replacing and adjusting the tension of the accessory drive beltReplacing and adjusting the tension of the accessory drive belt

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

Replacing and adjusting the tension of the accessory drive beltReplacing and adjusting the drive belt tension aggregates

Remove the belt from the pulleys

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.

Replacing the idler pulley and accessory drive belt tensioner

Replacing the idler pulley and accessory drive belt tensioner Replacing the idler pulley and accessory drive belt tensioner

Loosen the tension of the drive belt.

Completely unscrew the tensioning pulley bolt

Remove the pulley from the tensioner axis.

Replacing the idler pulley and accessory drive belt tensioner Replacing the idler pulley and accessory drive belt tensioner

If necessary, use a socket wrench or a “12” head to unscrew the three bolts securing the tensioner

Remove the tensioner mount from the engine

We install the tensioner and pulley on the engine in reverse order, after which we tighten the belt.