8 Series E31 850Ci (M73) COUPE
11 12 527
Reworking one valve seat (M73)
(cylinder head dismantled)
Machine valve seat surface with special tool 00 3 520 or
00 3 580 in accordance with tool manufacturer's instructions.
Note:
After machining the outer and inner diameters of the valve
seat face with a correction milling tool, rework to the specified
diameter until the correct valve seat width (5) is obtained.
1.
Valve-seat angle
2.
Correction angle, external diameter
3.
Correction angle, internal diameter
4.
Outside
∅
of the seat face
5.
Valve seat width
Specified values (1 to 5),
refer to Technical Data.
RA Reworking one valve seat (M73)
BMW AG - TIS
06.02.2013 06:31
Issue status (12/2007) Valid only until next DVD is issued
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