MTU Detroit Diesel 183 Series Technical Publication page 246

Group 05
Subgroup 4202
Page 2
20080/0 E 97-02
Valve stem end can be ground using the prism block
mounted on the valve grinding machine. Valve length
must remain above minimum permissible value.
Measure valve stem with outside micrometer.
For limit values, see Tolerance and Wear Limits List
05-4202 or 05-4202a.
If limit values are exceeded, replace valve.
Task Description