Fav 900
Engine / Cylinder head
Reseating valves
G
Repair
Fav 900 chassis number 23/3001 and up
19.02.2001
2010
000012
G
a
1/1
Capitel
Docu-No.
Index
Date
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Reseating valves
PM-Picturemodule
PM-Picturemodule
PM-Picturemodule
PMTAB_Picture
Reseating valves
Apply grinding paste to the valve seating face.
Lubricate valve guide and insert valve.
With a valve grinding tool, regrind valve seat with
spinning movements.
Note:
Do not allow grinding paste to come into
contact with the valve stem and guide.
PMTAB_Picture
The re-grinding process of the valve seat must
produce a perfect, closed grinding pattern.
The width of the grinding pattern is the result of a
correctly machined valve seat insert.
1. Valve cone face
2. valve seat
PMTAB_Picture
1. Valve seat insert
2. Valve
3. Valve seat - too wide
4. Valve seat - correct
Note:
Excessively wide valve seats are favoring
carbon deposits,
- Valve may leak -
Excessively narrow valve seats prevent rapid
heat transfer from the valve to the cylinder
head.
- Valves become scorched-
