Remove and install component carrier (integral support frame) (B46/B48 4-Cyl. Engine) (4' Series Coupe/Convertible, 4' Series Gran Coupe Sedan)

Special tools required:

2 469 803

NOTE: Air conditioning does not have to be drawn off.

Necessary preliminary work:

Remove ALTERNATOR .
Remove A/C COMPRESSOR from alternator bracket
Drain COOLANT .

Removal:

Disconnect vacuum hose (1) from clamp (2).

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Release screws (1 - 3).

Fig 1: Component Carrier Screws Loosening Sequence

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Release screws (1 - 4).

Loosen component carrier from the fitting sleeve and remove.

Fig 2: Component Carrier Screws Loosening Sequence

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Installation:

CAUTION: Engines with surface sealant:
Application time of sealing bead max. 10 minutes .
Start-up of the assembly is not possible until 25 minutes after the application time.

Failure to comply can lead to leaks in the assembly.

Clean sealing surface (1).

Check fitting sleeves for damage in the marked area.

Replace faulty fitting sleeves.

NOTE: Sealing surfaces (1) must be clean and free of grease.

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NOTE: Sealing bead (1) is bonded on coolant pump.
If a sealing bead (1) protrusion is present and not damaged, coolant pump can be installed again with the existing sealing bead (1).
If sealing bead (1) is damaged, it must be removed.

Apply sealing compound 2.2 (Loctite 5970).

Sealing compound height approx. 2 mm - 2.5 mm.

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Position sealing compound (1) on special tool 2 469 803 as shown.

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Position component carrier.

Tighten screws in the sequence (1 - 3).

Tightening torque 11 51 3AZ .

Fig 3: Component Carrier Screws Tightening Sequence

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Tighten screws in the sequence (1 - 4).

Tightening torque 11 51 3AZ .

Fig 4: Component Carrier Screws Tightening Sequence

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Attach vacuum line (1) into clamp (2).

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Required follow-up work: