5.17. Radical and conrod bearings - check and selection
1. Radical and conrod bearings at capital repairs of the engine are subject to obligatory replacement, however the bearings which were in operation should be checked carefully to restore the general condition of the engine at the time of repair.
2. Insufficient lubricant because of the wrong assembly (overlapping of channels, a small gap), pollution and penetration of foreign particles (untimely replacement of oil and the filter, violation of consolidations), frequent overloads of the engine and corrosion are causes of destruction of bearings of a bent shaft (is caused by frequent short trips). Irrespective of the reason which caused destruction of bearings it should be eliminated.
3. If the crankshaft does not pereshlifovyvatsya, then it is necessary to pick up bearings of standard dimensional group (after regrinding of necks only repair bearings are installed). After selection it is necessary to check gaps in bearings.
17:5á The Chart of selection of radical inserts on 4-cylinder engines
|
17:5í Places of drawing numbers of dimensional groups I of radical bearings on V6 engines
1. Dimensional group 1 - го the bearing
2. To a forward part of the engine
|
4. On 4-cylinder engines number of dimensional group of radical bearings is beaten out on the plane of the pallet (photo).
5. On 4-cylinder engines on the 2nd and 4th necks group B inserts are established (if the crankshaft did not pereshlifovyvatsya). The group of inserts of necks 1,3 and 5 (And or In) is beaten out on the pallet (photo).
|
3. The place of drawing number of dimensional group of a neck of the crankshaft (are put as it should be from 7 - й necks to the 5th) 4. Places of drawing numbers of a radical insert
|
|
Number of an insert
|
Number of dimensional group of a neck of the crankshaft
|
||
|
0
|
1
|
2
|
|
|
0
|
0
|
1
|
2
|
|
1
|
1
|
2
|
3
|
|
2
|
2
|
3
|
4
|
17:5ó The Table of codes for selection of radical inserts on K24 engines
|
17:6á The Place of drawing numbers of groups of support of the soared necks on V6 engines (as it should be from right to left), the 1st support - in front, the 4th - behind.
|
6. On V6 engines of number it is necessary to determine in addition dimensional groups of inserts and a radical support, and then by the sum of these numbers (or from the table) to define group of an insert (photo).