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

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see MAINTENANCE & GENERAL INFORMATION - SPECIAL TOOLS - 5-SERIES (E60) .

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).

Items (1) to (5). Refer to ENGINE - TECHNICAL DATA- 545I (4.4L) E60/N62 .

Fig 2: Identifying Valve Seat Measurements

Courtesy of BMW OF NORTH AMERICA, INC.