Replacing the front crankshaft oil seal
If there are signs of oil leakage through the crankshaft seals, first check if the crankcase ventilation system is clogged and if its hoses are pinched, repair if necessary.
If the oil leak does not stop, replace the oil seals.
A sign of the need to replace the front crankshaft oil seal is oil leakage through its edge.
In this case, the oil is sprayed by the rotating crankshaft pulley, as a result of which the entire front of the engine and the timing belt are oiled.
Disconnect the wire from the negative terminal of the battery.
Set the piston of the 1st cylinder to the TDC position of the compression stroke (see "Setting the piston of the first cylinder to the TDC position of the compression stroke").
Remove the timing belt (see "Replacing the timing belt and tensioner").
Using two screwdrivers, remove the crankshaft toothed pulley.
Remove the key from the crankshaft shank groove.
Using a screwdriver, remove the oil seal from the oil pump cover.
Lubricate the working lip of the new oil seal with engine oil, install it in the oil pump cover, orienting the working edge inside the engine, and press the oil seal into the pump cover until it stops with a mandrel.
As a mandrel, you can use a suitable size socket from the toolbox.
Install all removed parts and assemblies of the gas distribution mechanism in the reverse order of removal.
Adjust the tension of the timing and alternator drive belts
Replacing the crankshaft rear oil seal
The reason for the oiling of the clutch discs may be a leak in the oil seal of the input shaft of the gearbox or the rear oil seal of the crankshaft.
Engine and transmission oils differ in smell.
With a certain skill, it can be used to determine which of the oil seals is defective.
Helpful Tip There is another way to determine the type of oil.
Drip the oil into the water poured into a container in a thin layer.
Transmission oil will spread over the entire surface of the water in the form of an iridescent film, and engine oil will remain in the form of a drop similar to a lentil grain.
You will need: a screwdriver with a straight blade, a mandrel.
Remove the gearbox.
Remove the clutch.
Remove the flywheel
Inspect the gland. If it has lost its tightness, an oil leak will be visible in its lower part.
Pry off the oil seal with a screwdriver.
Lubricate the working lip of the new oil seal with engine oil, install it in the seat of the cylinder block, orienting the working lip into the engine, and carefully fill the working lip onto the crankshaft journal.
Press the oil seal into the seat until it stops, using a suitable mandrel.
You can use an old oil seal.
Install the removed units in the reverse order of removal.
Note When installing the flywheel, lubricate the threaded portion of the flywheel mounting bolts with Loctite threadlocker or any similar anaerobic threadlocker.