Valve Guide Ream
- Measure the diameter of the valve guide using the gauge MKM-571-B and a commercially available inside micrometer.
Note: Valve oversize may already have been fitted in production.
- An oversize service code is on the valve guide and the valve stem end. The following table gives the correct size, reamer and production code for each service.
| Size | Reamer | Production Code | Service Code |
|---|---|---|---|
| Normal | - | - | K |
| 0.075 | KM-805 | 1 | K1 |
| 0.150 | - | 2 | K2 |
- Ream the valve guide from the upper side of the cylinder head to the next oversize.
- After reaming, cross out the code and emboss the valve guide with the new code.