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2-9-13-prinadlezhnost-vkladyshejj-korennykh-podshipnikov-ustanavlivaemykhv-blok-cilindrov.html
2.9.13. Accessory of inserts of radical bearings, устанавливаемыхв block of cylindersIn the block of the cylinder inserts of radical bearings according to the color markings which are beaten out on the block of cylinders are established.
It is necessary for the bent shaft which was in the use and restored measure necks of radical bearings for installation of the corresponding inserts of bearings.
The nominal size of a radical neck – diameter is 65 mm.
The repair size of a radical neck – diameter is 64,75 mm.
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Fig. 2.457. Marking of inserts of the radical bearings installed in the block of cylinders
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For the restored crankshafts there are inserts of bearings of the bigger repair size. They are designated by the same color marking, as well as inserts of bearings of the nominal size.
Accessory of inserts of bearings of a frame of a cam-shaft
It is necessary for the bent shaft which was in the use and restored measure necks of radical bearings for installation of the corresponding inserts of bearings.
The old markings which are perhaps available on cranked to a shaft are invalid for the restored bent shaft.
Pick up inserts of radical bearings with the actual diameter of radical necks of a bent shaft according to the following table.
Sizes of a bent shaft, mm
Check of axial shift
Fasten a micrometer with a universal support to the block of cylinders and put against a crank cheek.
Press the crankshaft by hand to a micrometer, establish a micrometer on "0".
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Fig. 2.458. Check of axial shift of the crankshaft
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Wring out the crankshaft from the indicator and consider its indications: axial shift: 0,090–0,251 mm.
Check of a radial beating
Remove the directing frame and clear radical necks.
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NOTE
Do not interchange the position of the operated bearings.
It is necessary to replace inserts of bearings at wear to a nickel layer.
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Put a measuring strip of Plastigage according to bearing width on a neck and in inserts of bearings.
Plastigage thread has to lay down in the middle of a bearing insert.
Put a frame of cam-shafts and fasten with the moment 30 N · m. Do not turn the crankshaft.
Again remove a frame of cam-shafts.
Compare Plastigage thread width to a scale.
New radial beating: 0,010–0,077 mm.
Limit admission of a radial beating: 0,08 mm.
* On color marking it is impossible define compliance of inserts of bearings (the new or restored crankshafts).
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