Removal & Installation

WARNING: This page is about a different car, the 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 530i, and 2004 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.

(cylinder head dismantled)

Prepare special tool kit 11 7 390.

NOTE: Special tool kit 11 7 390 consists of special tools 11 7 391 / 11 7 392 / 11 7 393 / 11 7 394 / 11 7 395 / 11 7 396 / 11 7 397 / 11 7 398.

Place special tools 11 7 391 / 11 7 392 on cylinder head sealing surface and screw down with cylinder head bolts.

Fig 1: Placing Special Tools On Cylinder Head Sealing Surface

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Turn back screw (1).

NOTE: special tool 11 7 394 is secured with a pin (2).

Fit special tool 11 7 394.

Fig 2: Turning Back Screw

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Insert screw (1) by hand until special tool 11 7 393 rests on sealing surface.

Tighten down screw (1) by approx. a half to one turn.

Fig 3: Inserting Screw

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Check sealing rings (1) and coat with water as anti-friction coating. Insert special tool 11 7 395 and tighten down.

Fig 4: Checking Sealing Rings

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Seal coolant apertures with special tool kit 11 7 390.

Fig 5: Sealing Coolant Apertures With Special Tool Kit

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Connect compressed air to special tool 11 7 395.

Immerse cylinder head in a water bath. Inspection pressure 4.5 bar.

Check cylinder head for escaping air (cracks).

NOTE: If necessary, soften the bath water with a cleaning agent.

Fig 6: Connecting Compressed Air To Special Tool

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