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Home >> BMW >> 2021 >> M3 Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Collision >> Structural >> Collision - Body Panel Repair (G80) >> Body Panel Repair >> 41 00 Body Panel Repair General Information >> Notes On Adhesive K1 (M3 Base, M3 Competition, M3 Competition M xDrive, M3 CS)

Notes On Adhesive K1 (M3 Base, M3 Competition, M3 Competition M xDrive, M3 CS)

Attention! 

Note the following information before starting to apply adhesive!

Storage: 

Dry at 15°- 25°C

Shelf life: 

The glue cartridge is marked with a date

Do not use the adhesive after this date

Surface pre-treatment: 

The pre-treatment depends on the material to be bonded and its coating

Required cartridge gun: 

OVERVIEW OF GLUE CARTRIDGE GUNS .

Do not use compressed-air-operated cartridge guns! 

Check cartridge gun: 

The piston crown of the cartridge gun must have an even contact surface. Parts must not stand out from the contact surface, since this can lead to damage to the floor of the glue cartridge

During the initial use of a new cartridge gun, begin with the slowest feed rate

Afterwards, increase the feed speed only so much that the glue cartridge is not damaged

Preparing the glue cartridge: 

Opened glue cartridges may be used again before the expiry date as long as a new mixing tube is used

The working temperature of glue cartridge must be at least 20°C

Insert the glue cartridge into the cartridge gun

Manually press the piston rod against the bottom of the glue cartridge

Remove the cap and allow both adhesive components to escape. Strip adhesive components uniformly and attach mixing tube. Use only the mixing tubes supplied with the glue cartridge. Allow approx. 10 cm of mixed adhesive to emerge

Only then apply the mixed adhesive to one side of the bonding surface

Processing time of mixed adhesive approx. 2 hours. A change of mixer is only necessary if over a period of 1 hour no material has flowed through the mixer

2-component adhesive application: 

Refer to the vehicle-specific REP for the position and thickness of the adhesive bead

After applying the adhesive, check whether an adhesive component has emerged at the back of the glue cartridge. If yes, break off the bonding procedure. Clean new part. Use new glue cartridge. Contact national BMW hotline

Remove contamination caused by adhesive residue immediately

Hardened adhesive can only be removed mechanically

Hardening time: 

Do not shift the vehicle before the adhesive has hardened 

Check the degree of hardness of the adhesive with a fingernail

If the adhesive can no longer be pressed in with the fingernail, the vehicle can be moved for further processing steps (for example, paintwork) (without engine power)

The strength for driving  of the vehicle is reached after:

48 hours at an object temperature of 15°C

10 hours at an object temperature of 23°C

1 hour at an object temperature of 60°C

0.5 hours at an object temperature of 85°C

Attention! 

When using radiant heaters, the object temperature must not exceed 85°C. Excessively high temperatures will destroy the adhesive

Disposal of adhesive: 

Hardened adhesive is disposed of as normal waste

Empty glue cartridges are disposed of as normal waste

Non-hardened adhesives and a mixture of adhesive and solvent and the like must be disposed of as hazardous waste

This information applies to the Federal Republic of Germany 

In other countries, the locally applicable regulations must be applied. These may deviate from those applicable in the Federal Republic of Germany