Crank Drive, Cylinder Block (X 25XE,Y26SE)
Illustration
1 Main Bearing Journals2 Con-rod bearing journal
3 3 Main Bearing Journals (Guide Bearing)
4 Crankshaft color 5 Bearing shell color code
6 Bearing shell identification
Crank Drive,Cylinder Block(Continued)
| Engine | X25XE | ||
| Crankshaft dimensions | 3 Main Bearing Journals 1 to 4 |
code | |
| Standard size Undersize (0,25) Undersize (0,50) | mm mm mm mm mm mm |
67.980 to 67.988 67.988 to 67.996 67.730 to 67.738 67.738 to 67.746 67.480 to 67.488 67.488 to 67.496 |
green brown green/blue brown/blue green/white brown/white |
Standard size Undersize(0.20) Undersize(0.40) |
mm mm mm |
3 wide main bearing journals(guide bearing) |
|
| 24.500 to 24.552 24.700 to 24.752 24.900 to 24.952 | - - - | ||
Crank Drive, Cylinder Block(Continued)
Engine | X25XE | ||
Standard size Undersize(0.25) Undersize(0.50) |
mm mm mm |
3 Con-rod bearing journal 1 to 6 |
Code |
| 48.971 to 48.990 48.721 to 48.740 48.471 to 48.490 |
- blue white | ||
Crank Drive, Cylinder Block(Continued)
Engine | X25XE | |||
| Crankshaft bearings 1,2 | Lower crankshaft bearing shell | |||
| Colour code | Thickness | Identifica tion GM 15 | ||
| Standard size | mm mm |
brown green |
1.989 to 1.995 1.995 to 2.001 |
677 N 678 N |
| Undersize (0.25) | mm mm |
brown/blue green/blue |
2.114 to 2.120 2.120 to 2.126 |
679 A 680 A |
| Undersize (0.50) | mm mm |
brown/white green/white |
2.239 to 2.245 2.245 to 2.251 |
915 B 916 B |
| Upper crankshaft bearing shell | ||||
| Standard size | mm mm |
brown green |
1.989 to 1.995 1.995 to 2.001 |
673 N 674 N |
| Undersize (0.25) | mm mm |
brown/blue green/blue |
2.114 to 2.120 2.120 to 2.126 |
675 A 676 A |
| Undersize (0.50) | mm mm |
brown/white green/white |
2.239 to 2.245 2.245 to 2.251 |
913 B 914 B |
| Perm. crankshaft bearing clearance |
mm | 0.014 to 0.043 | ||
| Perm. crankshaft end clearance |
mm | 0.100 to 0.760 | ||
| Perm. out-of-round | mm | 0.050 | ||
Crank Drive, Cylinder Block(Continued)
Engine | X25XE | |||
| Crankshaft bearing 3 (guide biaring) |
Lower crankshaft bearing shell | |||
| Colour code | Thickness | Identification GM 15 | ||
| Standard size | mm mm |
brown green |
1.989 to 1.995 1.995 to 2.001 |
685 N 686 N |
| Undersize (0.25) | mm mm |
brown/blue green/blue |
2.114 to 2.120 2.120 to 2.126 |
007 A 008 A |
| Undersize (0.50) | mm mm |
brown/white green/white |
2.239 to 2.245 2.245 to 2.251 |
009 B 10 B |
| Upper crankshaft bearing shell | ||||
| Standard size | mm mm |
brown green |
1.989 to 1.995 1.995 to 2.001 |
685 N 686 N |
| Undersize (0.25) | mm mm |
brown/blue green/blue |
2.114 to 2.120 2.120 to 2.126 |
007 A 008 A |
| Undersize (0.50) | mm mm |
brown/white green/white |
2.239 to 2.245 2.245 to 2.251 |
009 B 10 B |
Crank Drive, Cylinder Block(Continued)
Engine | X25XE | |||
| 3 wide main bearing journals (guide bearing) |
Colour code | Thickness | Code | |
| Standard size |
mm | brown-green | 24.350 to 24.400 | - |
| Undersize (0.25) |
mm | brown/blue green/white |
24.550 to 24.600 | - |
| Undersize (0.50) |
mm | brown/white green/white |
24.750 to 24.800 | - |
Crank Drive, Cylinder Block(Continued)
Engine | X25XE | |||
| Con-rod bearing | Lower con-rod bearing shell | |||
| Colour code | Thickness | Identification GM 124 | ||
| Standard size | mm | - | 1.490 to 1.500 | 104 N |
| Undersize (0.25) | mm | blue | 1.615 to 1.625 | 105 A |
| Undersize (0.50) | mm mm |
white | 1.740 to 1.750 | 106 B |
| Upper con-rod bearing shell | ||||
| Standard size | mm | - | 1.490 to 1.500 | 104 N |
| Undersize (0.25) | mm | blue | 1.615 to 1.625 | 105 A |
| Undersize (0.50) | mm | white | 1.740 to 1.750 | 106 B |
| Perm. con-rod play | mm | 0.010 to 0.061 | ||
Crank Drive, Cylinder Block(Continued)
1 Index-identification of cylinder bore2 Cylinder bore
3 Double belelled ring with spiral-type expander
4 Tapered compression ring or double trapezoidal ring
5 Rectangular compression ring
6 Piston diametr
Crank Drive, Cylinder Block(Continued)
Engine | X25XE | |||
| 3 Cylinder bore Standard size Coefficient 8 Coefficient 99 Coefficient 00 Coefficient 01 Coefficient 02 Oversize (1) Index 7+0.5 |
mm mm mm mm mm mm |
81.575 to 81.585 81.585 to 81.595 81.595 to 81.605 81.605 to 81.615 81.615 to 81.625 82.065 to 82.075 | ||
| piston clearance | mm | 0.025 to 0.045 | ||
| Piston projection | mm | 0.45 | ||
(1) After re-boring the old index must be invalidated and the new oversizing index must be embossed.
Crank Drive, Cylinder Block(Continued)
Engine | X25XE, Y26SE | |||
| Piston rings Rectangular compression ring Height Gap Vertical play Tapered compression ring Height Gap Vertical play Oil scraper ring Height Gap Vertical play | mm mm mm mm mm mm mm mm mm | 1.50 0.30 to 0.50 0.02 to 0.04 1.5 0.30 to 0.50 0.02 to 0.04 3.0 0.4 to 1.4 0.01 to 0.03 | ||
Crank Drive, Cylinder Block(Continued)
Engine | X25XE, Y26SE | |||
| Piston pin Length Diameter Bearing | mm mm |
55.7 to 56.0 20.990 to 21.000 shrink-fit in con-rod | ||
| Clearance in piston in con-rod | mm mm |
0.011 to 0.014 0 | ||
