41 00... Information On Metal Filler

2013 BMW 128i 2D Convertible, Eng CD N52, Standard TransSECTION 41 00... Information On Metal Filler
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IMPORTANT: Note the following information before starting to apply metal filler!
  • Country-specific safety and industrial safety regulations
  • Material safety data sheet of manufacturer
  • Processing instructions on the packaging

Storage: 

Dry at 15°C to 25°C.

Shelf life: 

The packaging is marked with a date.

Do not use the metal filler after this date.

Surface pre-treatment: 

Grind surface to a metallic bright-finish. The surface must be clean, dry and free from grease.

Clean the surface with a cleaning agent R1 and let it vent for 2-3 minutes.

Processing: 

The working temperature of the metal filler must be at least 18°C.

Fig 1: Identifying Metal Filler And Hardener
G10039866Courtesy of BMW OF NORTH AMERICA, INC.
  1. Metal filler
  2. Hardener
NOTE: The mixture ratio refers to the volume.

Mix metal filler in mixture ratio of 5:2. Mix components thoroughly and free of pores.

IMPORTANT: Do not stir components. Danger of air pockets in metal filler!

Working life of the metal filler is approx. 45 minutes.

Applying filler: 

Apply pressure to apply a thin layer of metal filler. Carefully coat all edges in gaps with filler.

Then fill gap completely with filler. Apply filler with about 30% excess because the filler will significantly shrink during hardening. A second application of metal filler is not possible due to poor adhesion.

IMPORTANT: Use a narrow spatula to fill the gaps. Apply the filler in one draw if possible. Danger of formation of pores in gaps!

No restrictions related to the layer thickness.

Hardening time: 

The metal filler must be hardened using a short-wave infrared heater.

  • 10 minutes at 50°C - pre-hardening (avoid formation of bubbles/blisters and pores)
  • 10 minutes at 75°C - 1st stage hardening
  • 10 minutes at 85°C - 2nd stage hardening (avoid material shrinkage)
IMPORTANT: In the first 10 minutes, the temperature of 50°C may not be exceeded. In contrast, a temperature that is too low may be equalized by extending the time.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.