5 Series E39 525tds (M51) TOUR
11 12 527
Reworking one valve seat (M51)
Note:
cylinder head dismantled
Machine valve-seat face with Special Tool 00 3 520 or with 5-
edged cutting tool - Special Tool 00 3 580 - in accordance with
specifications of tool manufacturer.
Note:
After machining valve-seat face, rework outside and inside
diameters with correction milling tool - Special Tool 00 3 580 -
to specified diameter until valve-seat width is obtained.
1.
Valve-seat angle
2.
Correction angle, outside
3.
Correction angle, inside
4.
Outside diameter of seat face
5.
Valve-seat width
Pos. (1) to (5), refer to Technical Data
After valve seat has been machined, install repair valve with
stronger valve plate.
Continue machining valve-seat rings until specified valve-inset
clearance R is obtained,
refer to Technical Data
RA Reworking one valve seat (M51)
BMW AG - TIS
20.02.2013 02:06
Issue status (12/2007) Valid only until next DVD is issued
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