64 12 505 Removing and installing / replacing glow element (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.

Release screws and turn over heater.

Fig 1: Releasing Screws & Hose Clamp (Thermo Top S)

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Release screws and remove central cover.

Fig 2: Removing Central Cover (Thermo Top S)

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Disconnect all plug connections. Release screws and remove pull relief. Place wiring harness to one side.

Installation:

Cable tie (1) must be located in front of pull relief.

Fig 3: Removing Pull Relief

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Unfasten screws.

NOTE: The burner cover is welded plastically with the heater housing.
Lever out burner cover with screwdriver.

Installation:

Remove old sealing compound from cover and coat with new sealing compound provided.

Observe tightening torque, 64 12 7AZ.

Fig 4: Releasing Burner Cover Screws

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Remove glow element (1) and flame detector (2) from burner insert and detach together with burner cover.

Fig 5: Removing Glow Element & Flame Detector From Burner Insert

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Installation:

Run wires of glow element under cable duct (3) of burner insert.

Fig 6: Installing Glow Element Wires Under Cable Duct

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