The engine is dismantled for overhaul. Conditionally, the engine has already been removed from the car.

Motor mounts removed and engine mounted on a frame or stand

Remove the ignition module and the knock sensor for this:

Disassembly of the VAZ-2123 engine

Remove the tips of the high-voltage wires from the coil leads

Disassembly of the VAZ-2123 engine

We unscrew the four screws securing the coil using a hexagon 5.

Disassembly of the VAZ-2123 engine

Remove the ignition coil

Disassembly of the VAZ-2123 engine

Using a 13 key, unscrew the sensor mounting bolt and remove the knock sensor

Remove the air conditioning compressor drive belt for this:

Disassembly of the VAZ-2123 engine

We loosen the two bolts with a head of 13 fastening the tension roller bracket

Disassembly of the VAZ-2123 engine

Turn the adjusting bolt counterclockwise with a 13 head.

Disassembly of the VAZ-2123 engine

And remove the belt from the roller and compressor pulley

Disassembly of the VAZ-2123 engine

When installing the belt, take into account that it is located closer to the inner edge of the compressor pulley

Remove the accessory drive belt for this:

Disassembly of the VAZ-2123 engine

With a 13 head, we loosen the tightening of the three nuts securing the tension roller bracket

Disassembly of the VAZ-2123 engine

You can see the location of the belts in the photo.

Disassembly of the VAZ-2123 engine

Turn the head on the 13th adjusting bolt counterclockwise and loosen the belt

Disassembly of the VAZ-2123 engine

Remove the belt from the tensioner

Remove the generator for this:

Disassembly of the VAZ-2123 engine

Using a 13 key, we unscrew the nut of the lower mounting bolt of the generator

Disassembly of the VAZ-2123 engine

Remove the bolt

Disassembly of the VAZ-2123 engine

We unscrew the nut of the bolt of the upper fastening of the generator

Disassembly of the VAZ-2123 engine

Holding the generator, remove the bolt

Disassembly of the VAZ-2123 engine

Remove the generator.

Disassembly of the VAZ-2123 engine

Remove the generator bracket for this: with a 13 key, unscrew the bolt securing the plate to the bracket

Disassembly of the VAZ-2123 engine

We unscrew the two bolts of the lower bracket mounting

Disassembly of the VAZ-2123 engine

With a head of 13, we unscrew the bolt of the upper mounting of the bracket

Disassembly of the VAZ-2123 engine

Remove the generator bracket

Disassembly of the VAZ-2123 engine

Remove the gasket between the bracket and the block

Remove the power steering pump and oil filter bracket for this:

Disassembly of the VAZ-2123 engine

With a screwdriver, hold the pulley from turning and loosen in turn the three bolts securing the pump pulley

Disassembly of the VAZ-2123 engine

Remove the pulley

Disassembly of the VAZ-2123 engine

Using a 13 spanner, unscrew the bolt of the lower fastening of the pump plate

Disassembly of the VAZ-2123 engine

Unscrew the upper plate mounting bolt

Disassembly of the VAZ-2123 engine

Using a 13 key, we unscrew the bolt of the lower mounting of the pump to the oil filter bracket

Disassembly of the VAZ-2123 engine

We unscrew the bolt of the upper pump mount

Disassembly of the VAZ-2123 engine

Remove the pump together with the plate.

Disassembly of the VAZ-2123 engine

With a 13 head, we unscrew the three bolts securing the oil filter bracket to the block

Disassembly of the VAZ-2123 engine

Remove the support roller bracket

Disassembly of the VAZ-2123 engine

Remove the O-rings

We remove the oil separator of the crankcase ventilation system, the pan and the oil pump, for this:

Disassembly of the VAZ-2123 engine

Unscrew the cap nut of the cover fastening with a 13 spanner.

Disassembly of the VAZ-2123 engine

Remove the sealing copper washer.

Disassembly of the VAZ-2123 engine

Remove the oil separator cover

Disassembly of the VAZ-2123 engine

Remove the cover gasket

Disassembly of the VAZ-2123 engine

We screw two M8 nuts onto the oil separator stud, lock them and unscrew the stud

Disassembly of the VAZ-2123 engine

Remove the oil separator mounting pin

Disassembly of the VAZ-2123 engine

Pliers remove the oil separator from the socket of the cylinder block

Disassembly of the VAZ-2123 engine

With a 10 head, we unscrew the nineteen bolts securing the oil pan to the cylinder block

Disassembly of the VAZ-2123 engine

Remove the oil pan

Disassembly of the VAZ-2123 engine

Removing the pan gasket

Disassembly of the VAZ-2123 engine

With a 13 head, unscrew the two bolts securing the oil pump to the block

Disassembly of the VAZ-2123 engine

Removing the oil pump mounting bolts

Disassembly of the VAZ-2123 engine

Remove the oil pump seal

Remove the coolant pump for this:

Disassembly of the VAZ-2123 engine

With a 13 head, we loosen the tightening of the three pulley mounting bolts.

Alternately inserting a screwdriver between the bolts to prevent turning.

Disassembly of the VAZ-2123 engine

Remove the pulley

Disassembly of the VAZ-2123 engine

With a 13 head with an extension, we unscrew the two bolts of the lower fastening of the pump housing to the cylinder block

Disassembly of the VAZ-2123 engine

We unscrew one bolt of the upper fastening of the pump housing

Disassembly of the VAZ-2123 engine

Remove the coolant pump

Disassembly of the VAZ-2123 engine

A gasket is installed under the pump housing. When installing, change the gasket

Remove the flywheel and clutch housing cover;

VAZ-2123 engine disassembly

With a 10 key, unscrew the four bolts securing the clutch cover

Disassembly of the VAZ-2123 engine

With a 17 head, we unscrew the six flywheel mounting bolts.

Disassembly of the VAZ-2123 engine

We fix the shaft from turning with a mounting blade

Disassembly of the VAZ-2123 engine

Remove the washer, remove the flywheel

Next remove the cylinder head assembly with the receiver, intake pipe and exhaust manifold;

timing chain, shoe chain tensioner, sprocket crankshaft;

- oil pump drive shaft

Disassembly of the VAZ-2123 engine

With a head of 10, we unscrew the six bolts securing the crankshaft rear oil seal holder to the cylinder block

Disassembly of the VAZ-2123 engine

We pry off the tides of the holder with a screwdriver and remove it complete with the stuffing box.

Disassembly of the VAZ-2123 engine

Remove two square head bolts from the stuffing box cover.

Disassembly of the VAZ-2123 engine

Remove the gasket

Disassembly of the VAZ-2123 engine

Using a 10 key, unscrew the bolt securing the bracket for the oil separator drain tube and remove the bracket.

Disassembly of the VAZ-2123 engine

With a 14 head, unscrew the two nuts securing the connecting rod cap

Disassembly of the VAZ-2123 engine

Knocking with a plastic hammer on the surfaces of the connecting rod cap

Disassembly of the VAZ-2123 engine

Remove the connecting rod cover

Disassembly of the VAZ-2123 engine

Remove the lower connecting rod

Disassembly of the VAZ-2123 engine

Leaning on the ends of the rods of the connecting rod bolts, we shift the lower head of the connecting rod from the crankshaft journal

Disassembly of the VAZ-2123 engine

With the wooden handle of the hammer, we rest against the lower head of the connecting rod and push the piston into the cylinder.

Disassembly of the VAZ-2123 engine

Remove the piston with the connecting rod from the cylinder. We also remove pistons from other cylinders

Disassembly of the VAZ-2123 engine

Unlock the upper compression ring

Disassembly of the VAZ-2123 engine

Remove the top compression ring.

Disassembly of the VAZ-2123 engine

Also remove the lower compression ring

Disassembly of the VAZ-2123 engine

We take out two oil scraper discs.

Disassembly of the VAZ-2123 engine

Remove the oil scraper ring expander

Disassembly of the VAZ-2123 engine

To remove the piston from the connecting rod, pry off the piston pin circlip with a screwdriver

Disassembly of the VAZ-2123 engine

Remove the ring from the piston boss groove. In the same way, take out the second retaining ring

Sliding the piston pin, remove it from the holes in the piston and in the connecting rod head

Disassembly of the VAZ-2123 engine

Remove the piston from the connecting rod

Disassembly of the VAZ-2123 engine

Using a 17 head, we unscrew the two bolts securing the crankshaft main bearing cap.

Disassembly of the VAZ-2123 engine

If the parts will be reused, then you need to mark them.

Disassembly of the VAZ-2123 engine

Remove the main bearing cap

Disassembly of the VAZ-2123 engine

Remove the main bearing shells from the cover.

Also remove the remaining main bearing caps

Disassembly of the VAZ-2123 engine

Remove the crankshaft from the block.

Disassembly of the VAZ-2123 engine

We take out the semi-rings from the grooves of the rear support of the cylinder block

Disassembly of the VAZ-2123 engine

Remove the upper crankshaft main bearing shells from the cylinder block supports

Preparing the engine for inspection and defect detection