2.3.22. Removal and installation of cam-shafts

THE NOTE It is forbidden to process the bottom landing surface of a frame of cam-shafts and the top head of the block of cylinders.

Cam-shaft bearings are built in a head of the block of cylinders and a frame of cam-shafts. Before removal of a frame of cam-shafts it is necessary to weaken a gear belt.

After untwisting of a frame of cam-shafts necessarily replace манжетное consolidation of a cam-shaft and a cover.

Uncover ГБЦ.

Remove the phase shifter.

Remove a gear belt.

Fig. 2.164. Untwisting of a gear wheel of a cam-shaft

Turn off a cam-shaft gear wheel, for this purpose use a countersupport (fig. 2.164).

Fig. 2.147. Removal of a belt pulley of a cam-shaft двузахватным a stripper

Remove a gear wheel of a cam-shaft a stripper (fig. 2.147).

Turn off a back part of a protective casing of a gear belt from ГБЦ.

Unscrew screws of a frame of cam-shafts in regular intervals from edges to the centre and remove a frame.

Cautiously take cam-shafts upwards and lay them on a pure lining.

Remove old hermetic from a flute of a frame of cam-shafts, and also from condensing surfaces.

Fig. 2.165. Old hermetic on interfaced surface ГБЦ

Do not suppose hit of a dirt and the hermetic rests in ГБЦ (fig. 2.165).

Check up, that all коромысла have been correctly established on shafts of cores of valves.

THE NOTE On condensing surfaces there should not be an oil and greasings. Pistons should not be in ВМТ.

Grease working surfaces of cam-shafts with engine oil.

Accurately enclose cam-shafts in bearings of cam-shafts of a head of the block of cylinders. Cams And 4th cylinder should be turned to each other (fig. 2.153).

Fig. 2.153. Combination of dredging

Put uniform, slightly convex platen of hermetic in a pure flute of a frame of cam-shafts.

THE NOTE Not to put hermetic too thick layer. To establish and fasten a frame of cam-shafts follows without breaks as hermetic starts to harden right after contacts of landing surfaces. Observe hermetic working life.

Fig. 2.166. Installation of a frame of a cam-shaft

Put a frame of cam-shafts so that not to touch the valve рециркуляции ОГ (fig. 2.166).

Replace bolts of fastening of a frame of cam-shafts.

In some stages slightly twirl screws, beginning from the centre to edges.

Tighten bolts definitively in the specified sequence.

Fig. 2.167. Sequence of a tightening of bolts of fastening of a frame of cam-shafts

Запрессуйте a cover оправкой on depth of 1-2 mm (fig. 2.167).

Establish a cam-shaft epiploon.

Establish a back part of a protective casing of a gear belt.

Insert призматическую шпонку into a cam-shaft.

Establish a cam-shaft gear wheel. For a screw twisting keep a gear wheel of a cam-shaft by means of a support (fig. 2.164).

THE NOTE At прокручивании a cam-shaft any of pistons should not be in ВМТ. There is a danger of damage of valves/pistons.

Be convinced of correctness of installation призматической шпонки.

Establish a gear belt.

Establish the phase shifter.

Establish a cover of a head of the block of cylinders.

Establish a framework of a radiator with hinged components.

Fig. 2.96. Fastening of the rubber buffer

Lower an emphasis of a support against проворачивания at the expense of a body weight on the rubber buffer and tighten nuts (fig. 2.96).

Establish a casing of a forward bumper.

Check up adjustment of headlights.

The further installation and assemblage is carried out in return to sequence removal.