BMW 628csi - M635csi (M6)
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12 - Engine-Electrical
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12 31 569 - Slip rings - machining
FINE GRINDING SLIP RINGS
Tailstock EFAW 75 or GDF 85 R 3 is required
to fine grind the slip rings.
Important:
Min. slip ring dia. is 31.5 mm (1.240´´).
Check out-of-true of slip rings after grinding.
Max. permissible out-of-true: 0.03 mm (0.0012´´).