How to replace a VAZ 2110 timing belt and tension roller at home

Replacing the VAZ 2110 timing belt and tension pulley with your own hands

The timing belt is an element of the gas distribution mechanism responsible for the intake of the fuel-air mixture and the subsequent release of exhaust gases. If the timing belt breaks, the valves and pistons will be damaged, which will require a complete replacement of the piston group or replacement of the cylinder head.

What is a timing belt?

Replacing the VAZ 2110 timing belt and tension pulley with your own hands

The timing belt is a rubber-metal belt with teeth or a metal chain. On the first, the teeth are on the inside, tightly engaging with the camshaft gear of the crankshaft. They provide synchronization for the full operation of the vehicle engine.

Causes of belt breakage

One of the common problems with the model is the failure of the timing belt. The reasons for this may be different:

Simple wear and tear caused by a long period of use of the vehicle;
Regular increased loads under which the engine has to work intensively;
Mechanical damage as a result of improper operation or received during the repair of other components;
Manufacturing defect.

Regardless of the causes of the problem, it must be eliminated.

Over time, it stretches so much that the gear teeth jump by 1-2 links. This disrupts the valve timing and causes interruptions in engine operation. But this is the best-case scenario for such a situation. The worst is when the strap breaks and the valves bend.

How to replace the timing belt of a VAZ 2110 with your own hands

There are 2 rollers under the camshaft pulleys: on the right is a support roller “9”, and on the left is a tension roller “4”. The first has a hole with which the roller is attached. It is visually noticeable that it is slightly offset from the center; this helps to regulate the tension of the timing belt by turning the roller on the axis of the mounting bolt.

Replacing the VAZ 2110 timing belt and tension pulley with your own hands

The synchronization disk “8”, attached to the pulley “7” of the intake camshaft, allows for the operation of the phase sensor. And the drive front and rear are covered with a plastic cover.

To set the valve timing, special marks are used, marked with the letters “A”, “D”, “E”. They are on:

a cover covering the oil pump;
pulleys (B);
rear cover of the drive belt (marks “C” and “F”).

If the phases are adjusted correctly, mark “A” should coincide with “B”, “D” with “E”, “C” with “F”.

When to tension the timing belt

The timing belt of the VAZ-2112 and other VAZ models is tensioned in the following cases:

Installing a new belt;
Loose belt;
“Slipping” of the belt with a violation of the timing adjustment;
Replacement of the tension roller and other timing drive mechanisms.

If the cause of the intervention is a broken or “slipping” belt, you must first ensure the integrity of the valves. A broken gas distribution mechanism (drive) leads to engine damage on 16-valve 1.5-liter power units. However, in cases of drive failure at high speeds, valves and CPGs are also destroyed on other engines.

They check the operation of the timing belt on the VAZ-2114 and other models equipped with 8-valve units by turning the camshaft manually. A working mechanism should turn with some effort. A faulty one, as a rule, cannot be affected.

During the procedure, it is necessary to check the compression in each of the cylinders. The easiest way to do this is to tightly cover the spark plug hole with paper. If there is pressure in the cylinder, the plug is knocked out of its seat at a certain stage of camshaft rotation. » alt=»»> A similar check on 16-valve engines is not recommended. The risk of damage to an initially good valve mechanism is too great. There are no grooves in the pistons of one and a half liter engines of this type. Therefore, valves that move down bend when they contact the piston surface.

Signs by which you can determine the need to replace the VAZ 2110 timing belt

To replace the timing belt on time, you need to monitor the condition of the engine. The timing belt needs to be replaced if:

Replacing the VAZ 2110 timing belt and tension pulley with your own hands

there are oil leaks on it;
there are many cracks and signs of increased wear on its surface;
timing belt teeth are damaged;
the belt has delaminated, cuts, bulges or folds have appeared;
threads appeared on the surface.

Belt Condition Assessment

It is necessary to check the condition of the belt every 10-15 thousand kilometers. The condition of the belt is assessed after removing the timing belt protective cover.

Verification Process

Unscrew the bolts securing the cover and remove it. Next, we proceed to inspect the timing mechanism.

The belt should not contain:

Cracks;
Cliffs;
Sticking threads;
Traces of oil;

If such comments are found on the belt, it must be replaced.

Timing belt replacement algorithm

Disconnect the negative terminal from the battery.
Remove the generator drive belt.
Then we install the piston of the first cylinder in the position where the top dead center is located.
Using a 15mm wrench, unscrew the bolt that secures the tension roller. After this, turn the roller a little, then the timing belt tension will decrease.
Straighten the belt from the camshaft pulleys, then from the tension roller, as well as from the water pump timing pulley. Then remove it completely.

Fix the crankshaft and unscrew the bolt that secures the generator drive. Usually, for these actions you need an assistant who will fix the crankshaft by holding the flywheel ring teeth with a mounting tool. At the same time, you need to remove the clutch housing plug and unscrew the pulley mounting bolt.

Also check out

Self-adjustment of VAZ 2110 headlights at home
How to replace brake fluid on a VAZ 2110 yourself
Dismantling the cylinder head on a VAZ 2109. Algorithm for replacing the cylinder head gasket yourself

Using a 17mm spanner, unscrew the bolt that secures the crankshaft pulley and remove it along with the washer.

Then remove the generator drive pulley from the crankshaft.

Next, remove the timing belt drive washer from the pulley. Then you need to remove the timing belt from the crankshaft pulley.

Purpose of the crankshaft pulley

The crankshaft pulley on the VAZ 2110 serves the following purposes:

Reducing the amplitude of crankshaft vibrations during resonance. In particular, for this purpose, some craftsmen install a lightweight version of the crankshaft.
Reducing noise from the operation of the power unit.
Rotation of mechanisms that are directly involved in the operation of the motor. This happens with the help of gears and a belt.
The damper, in turn, addresses pulses corresponding to the number of crankshaft revolutions to the ECU.

Crankshaft damper pulley VAZ 2110

The VAZ 2110 car has a crankshaft damper pulley. The pulley itself transmits torque to additional units. The part is a flat ribbed wheel with a special hole for installing a belt. To improve performance, automakers equipped the pulley with a damper. Damper - a rubber layer to dampen vibrations that occur in cars. However, with this innovation, the life of the pulley has been reduced because the damper loses elasticity due to excessive loads. Sometimes the pulley breaks completely, which is why the VAZ 2110 stops moving.

Possible faults

The crankshaft pulley is removed in the following cases:

In the case of a VAZ 2110 hub turning. In most cases, this occurs due to careless repairs. The VAZ 2110 car is equipped with a special fixing sleeve, which is pressed into the gear. If installed incorrectly, it may fall out, which will cause the hub to rotate.
In case of lubricant leakage from under the crankshaft oil seal. It needs to be removed and replaced with a new one.

New oil seal
In case of strong resonance.
Incorrect pulley type installations.
Incorrect damper installation.
A split in the place where the damper is installed. In this case, replacement is necessary, and better yet, together with the crankshaft gear.
When removing the crankshaft - for repair work, changing bearings, etc.

Installing the timing belt VAZ 2110

Reassemble in reverse order.

There is a special recess for installing the generator drive pulley.

When installing the belt, it is necessary to monitor the tension of the leading branch.

Tension the belt using a special wrench with two protrusions at the ends.

Place the key in the hole on the outside of the tension roller. Turn it from left to right until the cutout on the outer disk coincides with the protrusion (it has a rectangular shape) of the inner bushing of the tension roller.
Using a 15mm wrench, tighten the tension roller mounting bolt.
If the timing belt makes noise after the timing belt is installed, this most likely indicates that the tension pulley bearing is faulty or is about to fail.
Remove the rollers. Rotate them to make sure that there is no play or jamming.
If there are any irregularities in the operation of the tension roller, it should be replaced.

Belt tension on 16-valve VAZ engines

Tensioning the timing belt on Priora and other cars equipped with 16-valve engines is generally done in the same way.

However, there are slight differences. Thus, the gas distribution mechanism cover of these engines is mounted on 6, and not on 3 bolts, as in the previous case.

In addition, the timing belt on VAZ-2112 power units (16 valves) is tensioned using two rollers. One of them is movable, used for tension. The second one is the support one. » alt=»»> When tensioning the belt of a “Prior” motor or motor 2112, special care must be taken. After putting it on and tightening it, you must definitely try to crank the engine by hand.

If the crankshaft cannot be turned, you should once again check that the marks are installed correctly. On these engines, an error almost always leads to damage to the valves and piston group.

How to replace the tension roller

Remove the faulty roller, put a new one in its place, and tighten it with a special wrench.

Use a tension roller to adjust the timing belt tension (follow the instructions).