Crankshaft oil seal front vaz 2107 which is better

The VAZ 2107 crankshaft oil seal often wears out and needs to be replaced. Like absolutely any part, the oil seal has its own service life and needs to be replaced with a new one. In fact, the crankshaft oil seal changes after almost the same period of time. In scientific terms, the stuffing box is correctly called a rubber reinforced cuff.

The main reason and point indicating an urgent replacement of the oil seal is the formation of an oil leak from under it.

For VAZ 2107, the oil seal replacement interval is approximately 3 years. Of course, it is not at all necessary that it will definitely work for three years; unplanned repairs may be needed at any time. For loss protective properties cuffs can be affected by various factors.

When the engine overheats, rubber loses its insulating and sealing properties due to increased elasticity. Now let's move on detailed description seal selection and replacement.

Choosing the Right Gland and Tool

Replacing the crankshaft oil seal VAZ 2107 does not require any complex tools or fixtures. The most important point in this work is the selection of the gland of the required size. Therefore, its replacement with the VAZ 2107 should be carried out precisely for this model (we do not consider analogues at all). The oil seal can be with an anther, which protects the crankshaft from dust.

For replacement you will need the following tool:

• open-end wrench 41 mm;
• chisel and hammer;
• flat screwdriver;
• puller.

It is possible to replace the rubber seal on the engine directly in the car (without removing it).

Replacing the front oil seal

When starting to replace the crankshaft cuff, you must first dismantle the pulley mounted on the crankshaft. To unscrew the pulley, we jam it with a chisel and unscrew the nut with an open-end wrench. Remove the pulley with a puller. If there is no puller, you can use a screwdriver or a chisel to pry alternately from different sides. Now we take out the old oil seal by prying it with a screwdriver.

We wipe the seat under the oil seal from dirt and oil. We carefully and evenly expose the new oil seal and apply the old seal on top and slowly push it into place with a hammer. Then we put the pulley in place. A new oil seal for this machine costs about 100 rubles, so there is nothing to complain about the price.

Replacing the rear sealing cuff of the crankshaft VAZ 2107

To accomplish this task, you need to drive the car to the observation deck. Then we remove the flywheel from the engine and unscrew the bolts of the clutch protective cover with an open-end wrench, and remove it from there. In order not to deform the crankshaft flange when driving in a new oil seal, it is best to remove the cuff holder. To do this, unscrew the bolts going to the mandrel of the cuff from the pallet and several bolts fixing the holder.

Pry off the holder with a flat screwdriver and remove it together with the seal. Now you can work with the holder anywhere, for example, by placing it in a vise.

A possible reason when a VAZ 2107 crankshaft rear oil seal needs to be replaced is an oil leak at the junction of the engine and gearbox. The second obvious reason will be the gland squeezed out of the seat. This usually occurs when the oil pressure in the system is too high. You can detect such a malfunction by limited engine speed when installing an injection motor.

Diagnostics and causes of malfunction
Among the reasons that cause a violation of the tightness of the stuffing box, one can single out both a deviation from the normal operation of the engine and its improper operation. The main reasons can be listed as follows:

Motor work on high revs;
. violation of the ignition timing;
. use of fuel not High Quality;
. overheat power unit;
. untimely replacement of oil and filter.

If the breather is contaminated from the engine, it may be difficult to remove crankcase gases, which is another reason when the replacement of the rear oil seal of the VAZ 2107 crankshaft is required. individual cases the reason for the rapid destruction of the seal is the poor quality of the recently installed part.

Replacement procedure
Before starting the repair work, the following preparatory operations should be performed:

Install and fix the car on the viewing hole;
. disconnect the battery;
. fix the crankshaft by engaging the gear.

The work on replacing the rear crankshaft oil seal on the VAZ 2107 is divided into preparatory and main ones.
It should be borne in mind that access to the rear oil seal will be obtained only after removing the manual transmission. Further work is carried out in the following order:

1. The rear wheels are hung out.
2. The catalyst is dismantled (for a car with injection).
3. The cardan shaft is disconnected from the box. When removing, fix the mutual position of the moving parts in order to avoid an increase in vibration after reassembly. You will also need to remove the flexible coupling.

4. We get access to the box from the salon. The plastic console of the radio tape recorder, the gear lever and the protective cover are removed.
5. The starter mount is released and the unit is retracted to the side.
6. The speedometer cable and reversing lamp wire are disconnected from the box.
7. The hydraulic hose and clutch cylinder are unscrewed, the clutch housing cover is disconnected.
8. The box is supported from below, the fixing bolts are unscrewed. The gearbox can be moved to the side.

Before replacing the oil seal, the clutch together with the flywheel should be dismantled. Now the gland retainer is removed. Having freed the defective gland, they prepare a seat for a new part. The gland is pre-lubricated with clean oil. Using a mandrel, a new element is installed in the seat, after which the gasket in the stuffing box holder is also replaced.
Assembly work is carried out in reverse order.

Replacement of a back epiploon of a cranked shaft

  You will need: all the tools needed to remove the gearbox, clutch and flywheel (see the relevant subsections), as well as a 10 wrench, a flat-blade screwdriver, a hammer.
  1. Remove the clutch (see "Removing and installing the clutch").
  2. Remove the flywheel (see "Removal, installation and troubleshooting of the flywheel").
  3. Turn off two nuts of fastening of a forward cover of a crankcase of coupling and remove it.

Fig.3

  8. Remove the gland from the holder using a screwdriver.

Fig.4

  9. Lubricate new oil seal engine oil, install it on the holder from the outside, orienting the working edge towards the centering protrusions A.
  10. With light blows of a hammer through the mandrel, press in the oil seal until it stops.
  11. Inspect the holder gasket. Replace a heavily compressed or torn gasket.
  12. Lubricate the gasket of the holder on both sides with sealant and glue it to the holder for ease of use.
  13. Install the holder together with the gasket and install all the bolts of its fastening without tightening them.
  14. Install a special mandrel on the crankshaft, thereby centering the holder relative to the shaft (in extreme cases, center the holder on the stuffing box).
  15. Slightly tighten the bolts securing the holder to the cylinder block.
  16. Finally cross-tighten the bolts securing the holder to the cylinder block.
  17. Finally tighten the bolts securing the holder to the oil sump.
  18. Establish the removed knots and details in an order, the return to removal.

Oil seals, or cuffs as they are simply called, are present to keep engine oil from leaking out and act as a barrier to dust entering the engine. Under normal operating conditions, this mechanism is able to serve long years. On average, it is designed for 150 thousand kilometers, after which it should be changed. Oil leakage may indicate this. As a rule, replacing the VAZ-2107 crankshaft oil seal is necessary when:

• you noticed that this element seemed to be squeezed out of its normal position - this happens when the oil pressure is too high and the old oil seal cannot cope with it;
• there was a leak at the junction of the gearbox and engine.

For those VAZ-2107 cars that have an injector under the hood, it is possible to install a special sensor. The latter may indicate the need to replace the cuffs.

What leads to quick damage to the seals

We have already figured out that they should be changed regularly over time. However, there are a number of factors that can lead to faster damage to the cuffs. Among them, the most common are:

• contact with old oil;
• engine overheating;
• defect in the part itself;
• using bad fuel.

Mechanism replacement

In the case of replacing the front oil seal, it is quite simple to change it. But as for the rear, you will have to pretty tinker with it and spend more time. In the case of an injector, you can change the cuffs without removing the radiator.

Immediately before the work itself, you should put your VAZ-2107 in the pit and de-energize the battery.

After it is extremely important to turn on the first gear - so you can fix the crankshaft. Be sure to also securely lock the vehicle in place with the parking brake. The procedure itself takes place in the following stages:

1. We unscrew the engine protection, remove the alternator belt and remove the alternator pulley.
2. Now you will be able to clearly see the gland - we take it out with a screwdriver.
3. The new cuff is well treated with oil and inserted into the right place.
4. After we put in place all the details in the reverse order.