Preparing New Parts

WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: TECHNICAL INFORMATION
Structural adhesive bonding .
Observe preparation of bonding surfaces.
For additional information see: 41 00... BMW bonding instructions

Remove the adhesive residues on the bonding surfaces of the connecting plate.
Seal the hole (1) by MAG weld.
Drill out holes (2) to dia. 6.8 mm.

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Remove adhesive residue from all bonding surfaces.
Prepare area (1) for the structural bonding of steel on aluminum.

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Adjust the new part using an alignment bracket or a universal fixture and secure it.
Prepare areas (1) for structural adhesive bonding with blind rivets of aluminum on steel.
Transfer the holes to the new part in areas (1). Drill holes with ø 6.8 mm.

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Adjust new part (1).
Prepare areas (2) for joining by welding.
Prepare area (3) for structural adhesive bonding with blind rivets of aluminum on steel.
In the area (3), drill holes to ø 6.8 mm. Select the number and position in line with the self-tapping screws of the standard production.
Prepare area (4) for structural adhesive bonding with blind rivets of steel on steel.
In the area (4), drill one hole to ø 6.8 mm. Select the position in line with the self-tapping screw of the standard production.

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Welding the ground pin and the coarse thread bolt onto the reinforcement of the engine mount

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
Take the quantity and position from the component to be replaced.
Weld the ground pin (1) and coarse thread bolt (2) onto the new part.

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Prepare areas (1) for structural adhesive bonding with blind rivets of aluminum on steel.
Transfer the holes to the new part in areas (1). Drill holes with ø 6.8 mm.

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Prepare area (1) for structural adhesive bonding with blind rivets of aluminum on steel.
Transfer the hole positions from the wheelhouse to the spring support in area (1). Drill out holes to dia. 6.8 mm.

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Prepare area (1) for structural adhesive bonding with blind rivets of aluminum on steel.
Transfer the hole positions from the engine compartment bulkhead to the spring support in area (1). Drill out holes to dia. 6.8 mm.

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Prepare areas (1) for structural adhesive bonding with blind rivets of aluminum on steel.
Transfer the hole positions from the wheelhouse to the spring support in area (1). Drill out holes to dia. 6.8 mm.

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Prepare the area of the recess (1) for joining with 2 x spot-welding.
Note the structural adhesive bonding in the area (2).

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Make separating cut (1) on new part in accordance with separating cut on vehicle.
NOTE: TECHNICAL INFORMATION
For additional information see: 41 00... Welding in reinforcement plates (sheet steel)

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Prepare a reinforcement plate (1) for the separating cut (2).
Prepare separating cut (1) and reinforcement plate (2) for joining by welding.
Prepare areas (3) for joining by welding.
Prepare the area of the recess (4) for joining with 2 x spot-welding.
Note the structural adhesive bonding in the area (5).
Prepare a reinforcement plate (1) for the separating cut (2).
Prepare separating cut (1) and reinforcement plate (2) for joining by welding.
Prepare areas (3) for joining by welding.
Prepare the recesses (4) for joining with 2 x spot-welding.
Note the structural adhesive bonding in the area (5).

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Position the holder (1) for the brake hose in the wheel arch.
Prepare area (2) for structural adhesive bonding of aluminum on aluminum with blind rivets.
In the area (1), drill 2 holes ø 6.8 mm according to the schematic.
Remove the new parts and deburr the bores.

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Replacing the coarse thread bolt and threaded weld bolts (steel surface)

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
Renew the coarse thread bolt (1) and the threaded weld bolt (2).
Parts : Coarse thread bolt, threaded weld bolt

Take the number and position from the component to be replaced or the add-ons.
Weld the coarse thread bolt (1) and threaded weld bolt (2) onto the new part.

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Check ground pins and replace if necessary

NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
Check the ground pins (1) for stability and renew if necessary.

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