41 12 590 Luggage Compartment Floor Replacement (Complete With Left Or Right Inner Wheel Arch Section, Tail Panel Removed)

WARNING: This page is about a different car, the 2010 BMW M3, 2009 BMW M3, and 2008 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Remove or cover those vehicle components in the repair area which are susceptible to heat or dust.

Spot-weld bonding is used on this vehicle. Observe specific procedure .

Use only approved spot-welding apparatus for repairs!

Place vehicle on straightening bench.

(1) Luggage compartment floor, upper section
(2) Rear axle carrier
(3) Wheel arch, rear, inner half, left
Touring only:
(4) Bracket, tension strut, rear (not illustrated)

Fig 1: Luggage Compartment Floor, Rear Axle Carrier And Wheel Arch

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Mark severance cut in accordance with measurement a and cut.

Measurement a=40 mm behind support, frame side member (1).

Installation:

Weld in reinforcement plate at severance cuts.

Fig 2: Frame Side Member

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Mark severance cut (1) and cut.

Open weld joints in areas (2).

Installation:

Weld new components in areas (3) additionally.

Fig 3: Cut Mark And Weld Joint Areas

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Mark severance cut (1) in accordance with measurement a and cut rear axle carrier.

IMPORTANT: Cut outer metal sheet only.

Measurement a=70 mm from rear axle bushing mounting.

Open weld joints in area (2).

Installation:

Weld in reinforcement plate at severance cuts.

Fig 4: Weld Joint Areas

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Open weld joints in areas (1).

Fig 5: Weld Joint Areas

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Saloon and Coupe only:

Open weld joints in area (1).

Installation:

Weld new components in areas (2) additionally.

Fig 6: Weld Joint And New Component Areas

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Touring only:

Open weld joints in area (1).

Installation:

Weld new components in areas (2) additionally.

Fig 7: Weld Joint And New Component Areas

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NOTE: Rear parcel shelf of Saloon and Coupe is shown removed for purposes of clarity.
Open weld joints in areas (1) and (2).

Fig 8: Weld Joint Areas

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NOTE: Rear parcel shelf of Saloon and Coupe is shown removed for purposes of clarity.
Open weld joints in area (1).

Installation:

Weld new component in areas (2) additionally.

Fig 9: Weld New Components Areas

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NOTE: Rear parcel shelf of Saloon and Coupe is shown removed for purposes of clarity.

Mark severance cut (1) centrally and cut.

Cut floor pan and cross-member underneath.

Open weld joints in area (2).

Fig 10: Cut Mark And Weld Joint Areas

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Preparation of new part:

Mark severance cut (1) in accordance with measurement and cut.

IMPORTANT: Cut outer metal sheet only.

Measurement a=170 mm

Measurement b = 110 mm

Installation:

Weld in reinforcement plates at severance cuts.

Fig 11: Cut Mark

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Preparation of new part:

Open weld joints in area (2).

Installation:

The cut part is not needed.

Fig 12: Weld Joint Areas

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Preparation of new part:

Open weld joints in area (1).

Mark severance cut (2) in accordance with vehicle and cut.

IMPORTANT: Cut outer metal sheet only.

Fig 13: Open Weld Joint Areas And Severance Cut Area

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Preparation of new part:

Open weld joints in areas (1).

Fig 14: Weld Joint Areas To Be Opened

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Preparation of new part:

Open weld joints in area (1).

Installation:

The cut part (2) is not needed.

Fig 15: Open Weld Joint Areas; Cut Part Is Not Needed

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Preparation of new part:

Open weld joints in area (1).

Mark severance cut (2) in accordance with vehicle and cut.

Fig 16: Open Weld Joints & Mark Severance Cut

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Installation:

Adjust new parts to fit with straightening attachment or universal mount.

Before welding in, also adjust tail panel, rear lid and rear lights to fit.

Weld new components in following order:

(1) Rear axle carrier
(2) Luggage compartment floor, upper section
(3) Support, frame side member
(4) Wheel arch, rear, inner half

Fig 17: Wheel Arch, Support, Luggage Compartment Floor And Rear Axle Carrier

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NOTE: Rear parcel shelf of Saloon and Coupe is shown removed for purposes of clarity.

Installation:

For reasons of accessibility, the repair joining sequence differs from the standard joining sequence.

Fit new component from above in area (1), adjust to fit and weld.

Fig 18: Fit New Component From Above In Area (1)

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Installation:

Touring only:

Adjust new part (1) with tension strut to fit and weld.

Fig 19: Adjust New Part (1) With Tension Strut

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