3-25-razborka-i-sborka-dvigatelya.html

3.25. Dismantling and assembly of the engine

We remove the engine from the car (see. "Removal of the engine from the car") we also clear it of dirt and oil.

Cap key "on 13" we turn off four nuts of hairpins of fastening of an arm of the right forward support of the power unit to the block of cylinders of the engine...

... also we remove an arm.

Similarly we disconnect an arm of the left forward support from the block of cylinders.

On fixing hairpins of the right arm of a forward support we mount a stand plate for dismantling of the engine and we fix the engine at the stand.

We remove the generator, a flywheel, a head of the block of cylinders, a cover of the pump of cooling liquid, the case pallet, a cover, a chain and asterisks of the drive of the camshaft, an oil separator and the oil pump. Operations on dismantle of these knots are given in appropriate sections.

Key "on 10" we turn off two nuts of hairpins of fastening of a flange of the taking-away radiator tube отопителн to a pump housing of cooling liquid...

... also we pick up the phone with sealing laying.

Key "on 13" we turn off three bolts of fastening of a pump housing of cooling liquid to the block of cylinders of the engine.

We remove a pump housing and its sealing laying.

Key "on 10" we turn off six bolts of fastening of a cover of a back epiploon of a bent shaft...

... also we uncover with an epiploon.

Connection is condensed with laying.

Key "on 10" we turn off a bolt of fastening of an arm of a drain tube of an oil separator to the block of cylinders of the engine...

... also we remove an arm.

Head "on 14" we turn off two nuts of bolts of fastening of a cover of a rod (the piston at the same time has to be in NMT).

We uncover a rod.

We take out the lower insert of the conrod bearing from a cover.

We shift the lower head of a rod from a neck of a bent shaft.

Resting the wooden handle of the hammer against the socket of the lower head of a rod, we push the piston in the cylinder...

... also we take out the piston with a rod from the cylinder.

Similarly we take out pistons with rods from other cylinders of the engine.

We take out the top insert of the conrod bearing from a rod head.

We fix a rod in a vice with overlays of sponges from soft metal.

Carefully, without making big effort, we unclench fingers the lock of the top compression ring, we bring a ring out of a flute of the piston and we remove it.

In the same way we remove the second compression ring.

We remove an oil scraper ring and its dilator.

Having installed the piston on a wooden support with cylindrical dredging under a skirt of the piston and an opening under a piston finger, the hammer through a mandrel we beat out a piston finger.

If some details of conrod and piston group are not damaged and a little worn-out, then they can be used again. Therefore when dismantling it is necessary to mark their arrangement to establish on former places.

Before dismantle of a bent shaft we check its axial gap. For this purpose the assembly shovel moved a bent shaft in the axial direction forward against the stop and measure by the flat probe a gap between a cheek of a bent shaft and a persistent half ring. The extreme size of a gap — 0,35 mm.

Head "on 17" we turn off two bolts of fastening of a cover of the radical bearing of a bent shaft...

... also we uncover with the lower insert of the bearing.

We take out an insert from a cover.

Similarly we turn off bolts of fastening and we uncover four more radical bearings.

We take out a bent shaft from beds.

From the protocheck of a bed of the fifth radical bearing we take out persistent half rings.

We take the top inserts of radical bearings from beds of the block of cylinders.

By stripper it is pressed from a sock of a bent shaft a camshaft drive asterisk (operation we carry out carefully not to damage asterisk teeths)...

... also we remove an asterisk.

The hammer through a drift from soft metal we beat out the segment spline fixing an asterisk from a groove of a bent shaft...

... also we take out a spline.