When the chain tensioner shoe is worn, the tensioner response range becomes insufficient to restore chain tension

The chain starts to rattle while the engine is running

In this case, replace the shoe

You will need: wrenches "for 10", "for 13", "for 17", a special wrench for the crankshaft pulley nut, a screwdriver, a mounting spatula, a hammer, a beard.

Replacing the damper shoe without dismantling the radiator is possible only with sufficient skill of the performer, since the space between the engine and the radiator is very small.

If there is no experience of such work, we recommend removing the radiator.

In addition, for the convenience of work, we recommend removing the oil sump protection and the engine mudguard, since the three oil sump mounting bolts, which simultaneously fasten the timing gear drive cover, are difficult to access from above from the engine compartment.

Remove the camshaft drive chain tensioner (see Replacing the camshaft drive chain tensioner).

Replacing the VAZ-2123 chain tensioner shoe

Loosen the power steering pump drive belt and remove the belt.

Replacing the VAZ-2123 chain tensioner shoe

Disconnect the wiring harness from the crankshaft position sensor.

Replacing the VAZ-2123 chain tensioner shoe

Disconnect the power steering pump from the engine by removing the two front bolts securing the pump bracket

Replacing the VAZ-2123 chain tensioner shoe

Please note: a spacer washer is installed under the upper front bolt, do not lose it, and reinstall it when reinstalling the pump.

Replacing the shoe of the VAZ-2123 chain tensioner

Remove the rear bolt

Replacing the VAZ-2123 chain tensioner shoe

Remove the top bolt and move the pump to the side along with the bracket and hoses.

Replacing the VAZ-2123 chain tensioner shoe

Please note: a distance washer is installed under the upper bolt, do not lose it, and when reinstalling the pump, reinstall it in its original place

Replacing the VAZ-2123 chain tensioner shoe

Remove the pulley nut and remove the pulleys

Replacing the VAZ-2123 chain tensioner shoe

Unscrew the three bolts securing the sump to the camshaft drive cover and loosen (by turning 2–3 turns) the tightening of the two adjacent bolts securing the sump to the engine crankcase.

Replacing the VAZ-2123 chain tensioner shoe

Replacing the VAZ-2123 chain tensioner shoe

Unscrew the remaining bolts and nuts securing the camshaft drive cover and, prying with a screwdriver, remove the cover and its gasket.

Replacing the VAZ-2123 chain tensioner shoe

Each time you remove the cover, replace the gasket with a new one, even if the old gasket is intact.

Before installation, lubricate the new gasket on both sides with a thin layer of sealant.

Remove the camshaft drive chain tensioner.

Replacing the VAZ-2123 chain tensioner shoe

Remove the tensioner shoe mounting bolt and remove the shoe

Replacing the VAZ-2123 chain tensioner shoe

Pay attention to the original shape of the shoe - it differs from the shoes previously used on VAZ engines. Buy the exact same shoe.

Install the new tensioner shoe and the removed parts in the reverse order of removal.