64 12 535 Removing and installing / replacing burner insert (Thermo Top S)

WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

Remove retaining plate with glow element and flame detector.

Unscrew grub screw (1) until air duct (2) and burner support bracket (3) can be pulled out of the heater together with the burner insert.

Fig 1: Releasing Grub Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Lightly lever out tabs (5) with screwdriver. Pull apart burner support bracket and burner insert.

Grub screw
Air duct
Burner bracket
Burner insert
Tabs
Guide for glow element
Guide for flame detector

Fig 2: Identifying Burner Support Bracket & Burner Insert Components

Courtesy of BMW OF NORTH AMERICA, INC.