MACHINING VALVE SEATS AND VALVES - Valves Removed -
Watch minimum edge thickness A¹) and valve
seat angle B¹).
Replace valve, if edge thickness is less than
specifications.


¹) See Specifications

Machined valves seats must not have chatter marks.
Grind in valves with grinding paste.
Installation: Check valves for leaks 11 34 509.


11 34 509

Vehicles after change point in 1982
MACHINING VALVE SEATS
AND VALVES
- Valves Removed -
Replace valve, if edge thickness A* is less than specified.


* See Specifications

Produce valve seat diameter M* and valve seat width B* by machining
correction angles* after machining the valve seat angle*.
Grind in valves with grinding paste and check for leaks - see 11 34 509.


* See Specifications
11 34 509