Engine block test values |
Number | Designation | Engine 904.9, 906.9 | Engine 924.9, 926.9 | |||
BE01.40-B-1001-02C | Cylinder's internal diameter, finishing | Normal | Tolerance A | mm | 101,985...101,991 | 105,985...105,991 |
Tolerance B | mm | 101,992...102,008 | 105,992...106,008 | |||
Tolerance C | mm | 102,009...102,015 | 106,009...106,015 | |||
Repair I | Tolerance A | mm | 102,285...102,291 | 106,285...106,291 | ||
Tolerance B | mm | 102,292...102,308 | 106,292...106,308 | |||
Tolerance C | mm | 102,309...102,315 | 106,309...106,315 | |||
Repair II | Tolerance A | mm | 102,585...102,591 | 106,585...106,591 | ||
Tolerance B | mm | 102,592...102,608 | 106,592...106,608 | |||
Tolerance C | mm | 102,609...102,615 | 106,609...106,615 | |||
Repair III | Tolerance A | mm | 102,885...102,891 | 106,885...106,891 | ||
Tolerance B | mm | 102,892...102,908 | 106,892...106,908 | |||
Tolerance C | mm | 102,909...102,915 | 106,909...106,915 |
Crankshaft test values |
Number | Designation | Engine 904.9 | Engine 906.9; 926.9; 924.9 | ||
BE03.20-B-1001-02C | Diameter of the main journals | standard | mm | 85,990...86,010 | 85,990...86,010 |
standard I | mm | 85,890...85,910 | 85,890...85,910 | ||
repair stage I | mm | 85,740...85,760 | 85,740...85,760 | ||
repair stage II | mm | 85,490...85,510 | 85,490...85,510 | ||
repair stage III | mm | 85,240...85,260 | 85,240...85,260 | ||
repair stage IV | mm | 84,990...85,010 | 84,990...85,010 |
Crankshaft test values |
Number | Designation | Engine 904.9 | Engine 906.9; 926.9; 924.9 | ||
BE03.20-B-1007-02C | Inside diameter of main journal bearing shells (installed) | standard | mm | 86,066...86,108 | 86,066...86,108 |
standard I | mm | 85,966...86,008 | 85,966...86,008 | ||
repair stage I | mm | 85,816...85,858 | 85,816...85,858 | ||
repair stage II | mm | 85,566...85,608 | 85,566...85,608 | ||
repair stage III | mm | 85,316...85,358 | 85,316...85,358 | ||
repair stage IV | mm | 85,066...85,108 | 85,066...85,108 |
1 | Clean the bearing shells housing in the crankcase and in the main bearing caps (3) with suede. |
2 | Install the bearing shells (1, 2), in the crankcase and in the bearings covers. |
Observe that the bearing shells catches (1, 2) perfectly fit in the grooves (arrows) in the crankcase bearings and in the bearings covers (3). |
The bearing shells (2) assembled in the crankcase are fitted with holes for oil passage, which must match with the holes existent in the crankcase. |
W03.20-0003-01
3 | Install the bearings covers (3) in the crankcase pressing them manually. |
The bearing shells catches of the crankcase and the bearings covers (3, 4) must be on the same side. |
The sequence number (arrows) embossed in the bearings covers must be assembled from the engine front side. |
4 | Slightly grease the thread and the seating face of the screw heads (6) and screw them in the crankcase. |
W03.20-0004-01
5 | Use a measuring device for internal diameters to measure internal bearing shell diameters in three different places as follows: (A) vertically and (B and C) at approximately 30° from the bearing shell joint. |
In the case the values obtained in the measurement (A, B and C) are not within the prescribed dimensions, replace the bearing shells. |
6 | Remove the covers of the bearings (3, 4). |
In the case of reusing the screws (6), check the length (L). |
W03.20-0005-01
7 | With the micrometer, measure the diameter of the crankshaft main necks in two points distant in 90º. Note the values obtained with the measurement. |
8 | Calculate the radial play of the main bearing (with bearing shells) in the crankshaft neck: |
Value obtained by measuring the bearing shells.
- Value obtained in the measurement of the crankshaft neck.
= Radial play of the main bearing in the crankshaft neck.
In order to obtain the radial play of the main bearing in the crankshaft neck, the bearing shells and respective neck diameter must comply with the tolerance range prescribed and belong to the same degree of tolerance (normal/repair I/repair II/repair III/repair IV).
The bearing shells are supplied always ready to be assembled.
Under no hypothesis, perform any type of thinning or adjustment.
W03.20-0009-01