300CD (123.153) L5-3.0L DSL Turbo (617.952) (1982)
Valve: Service and Repair
Checking and Machining
1
Clean valves and check visually.
Valves with a burnt valve retainer, with insufficient height "h" of valve retainer and valves with worn out or scored valve stem should be replaced.
2
Measure runout on valve stem. If runout exceeds 0.03 mm, replace valve.