Check And Adjustment Values
10 - Engine
Engine Mount Adjustment
| Distance in mm | |
|---|---|
| Dimension -a- | 10 |
| Dimension -b- | The front and rear are parallel |
Requirement
- The casting edge on the engine support must be parallel to the engine mount support arm.
Refer to Assembly Mounts, Checking and Adjusting .
Transmission Mount, Adjustment
| Distance | |
|---|---|
| Dimension -a- | The front and rear are parallel |
Requirement
- The support arm must be parallel to the transmission mount.
Refer to Assembly Mounts, Checking and Adjusting .
13 - Crankshaft
| Crankshaft Dimensions | Crankshaft Bearing Pin Diameter in mm | Connecting Rod Bearing Pin Diameter in mm | ||
|---|---|---|---|---|
| EA888evo4 LK1, LK2 | 48.00 | -0.032 | 47.80 | -0.022 |
| -0.052 | ||||
| EA888evo4 LK3 | 52.00 | -0.032 | -0.042 | |
| -0.052 | ||||
The reprocessing of worn crankshafts is not possible at this time.
| Crankshaft Axial Clearance | Axial Clearance in mm |
|---|---|
| New | 0.070 to 0.231 |
| Wear limit | 0.30 |
Refer to Crankshaft, Measuring Axial Clearance .
| Crankshaft Radial Clearance | Radial Clearance in mm |
|---|---|
| New | 0.017 to 0.037 |
| Wear limit | 0.15 |
Refer to Crankshaft, Measuring Radial Clearance .
| Connecting Rod Radial Clearance | Radial Clearance in mm |
|---|---|
| New | 0.02 to 0.06 |
| Wear limit | 0.09 |
Refer to Connecting Rods, Checking Radial Clearance .
| Cylinder Bore | Diameter in mm |
|---|---|
| Specified size | 82.51 |
| Deviation from nominal dimension | 0.08 |
Requirement
- Specified size measured at 50 mm cylinder bore depth
Refer to Piston and Cylinder Bore, Checking .
| Piston | Diameter in mm |
|---|---|
| Specified size | 82.42 |
| Deviation from nominal dimension | 0.04 |
Requirement
- Measurement without coating (thickness = 0.04 mm). The coating wears off.
Refer to Piston and Cylinder Bore, Checking .
| Piston Ring Gap | Axial Clearance in mm | |
|---|---|---|
| 1. Compression ring | New | 0.30 to 0.40 |
| Wear limit | 0.60 | |
| 2. Compression ring | New | 0.40 to 0.50 |
| Wear limit | 0.70 | |
| Oil Scraping Ring | cannot be measured | |
Refer to Piston and Cylinder Bore, Checking .
15 - Cylinder Head and Valvetrain
| Cylinder Head Distortion | Dimension in mm |
|---|---|
| Maximum permissible distortion | 0.05 |
Refer to Cylinder Head, Checking for Distortion .
Compression values for compression ratio 9.3:1
| Compression Ratio 9.3:1 | Pressure |
|---|---|
| New pressure in bar | 11.0 to 14.0 bar (159.54 to 203.05 psi) |
| Wear limit | 7.0 bar (101.52 psi) |
| Maximum difference between cylinders | 3.0 bar (43.51 psi) |
Compression values for compression ratio 12.2:1
| Compression Ratio 12.2:1 | Pressure |
|---|---|
| New pressure in bar | 16.0 to 19.0 bar (232.06 to 275.57 psi) |
| Wear limit | 12.0 bar (174.04 psi) |
| Maximum difference between cylinders | 3.0 bar (43.51 psi) |
Refer to Compression, Checking .
| Camshafts Axial Clearance | Axial Clearance in mm | |
|---|---|---|
| Intake Camshaft | Exhaust Camshaft | |
| New | 0.095 to 0.202 | |
| Camshafts Radial Clearance | Radial Clearance in mm | |
|---|---|---|
| Intake Camshaft | Exhaust Camshaft | |
| New | 0.024 to 0.066 | |
| Wear limit | 0.04 | |
Requirement
- The roller rocker levers must be removed.
| Valve Guide Tilting Clearance | Tilting Clearance in mm |
|---|---|
| Wear limit | 0.6 |
Valve Dimensions
| Intake Valve | Exhaust Valve | |
|---|---|---|
| -A- diameter in mm | 33.85 ± 0.10 | 28.0 ± 0.1 |
| -b- in mm | 103.97 | 101.87 |
| -c- diameter in mm | 5.92 ± 0.02 | 5.92 ± 0.02 |
| -d- ∠° | 45 | 45 |
26 - Exhaust System
Exhaust System Pretension
| Adjustment Dimension -a- in mm | |
|---|---|
| Retaining loop pretension | 5 |