1 Series E87 120i (N43) 5-door
11 12 527
Reworking a valve seat - cylinder head
disassembled (N43)
Special tools required:
•
00 3 520
•
00 3 580
Necessary preliminary tasks:
•
Remove all valves.
Machine valve seat surface with special tool 00 3 520 or with
00 3 580 in accordance with tool manufacturer's instructions.
Note:
After machining valve-seat surface: Remachine outside and inside
diameters with correction milling tool to the specified diameters
until you obtain valve seat width (5).
1.
Valve-seat angle
2.
Correction angle, outside
3.
Correction angle, inside
4.
Outside diameter of seat face
5.
Valve-seat width
RA Reworking a valve seat - cylinder head disassembled (N43)
BMW AG - TIS
23.01.2013 06:39
Issue status (12/2007) Valid only until next DVD is issued
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