11 12 527 Remachining a valve seat - cylinder head disassembled (N62)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 3 520
00 3 580

Machine valve seat surface with special tool 00 3 520 or with 00 3 580 in accordance with tool manufacturer's instructions.

Fig 1: Machining Valve Seat Surface

Courtesy of BMW OF NORTH AMERICA, INC.

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).

Fig 2: Identifying Valve Seat Width Diameters

Courtesy of BMW OF NORTH AMERICA, INC.

Items (1) to (5), refer to ENGINE - TECHNICAL DATA .