11 62 140 Removing and installing both exhaust manifolds with catalytic converters (M52TU / M54 / M56)

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2006 BMW 330Ci, 2005 BMW 330xi, 2005 BMW 330i, 2005 BMW 330Ci, and 2004 BMW 330xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 0 200
00 0 201
00 0 202
00 0 204
00 0 208

E46 only

Remove microfilter.

Open cable guide on lower section of microfilter housing (2) and feed out cable(s).

Release screws (1) and remove lower section of microfilter housing (2).

Fig 1: Releasing Screws & Removing Lower Section Of Microfilter Housing

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Assemble special tool 00 0 200 with special tools 00 0 201 / 00 0 202 / 00 0 204 / 00 0 208 and fit.

Secure special tool 00 0 200 to front suspension eye on engine.

NOTE: The supports (1) of special tool 00 0 208 must rest on the bolt connection of both side walls.

Fig 2: Identifying Special Tool

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Tighten the screws (1 and 2).

Fig 3: Tightening Screws

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Release nuts on engine mount on left and right.

Raise engine with special tool 00 0 200 approx. 5 mm.

Fig 4: Raising Engine With Special Tool

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Remove exhaust system.

NOTE: Vehicles with front end reinforcement:

Remove front end reinforcement.

Remove right engine support arm with engine mount.

NOTE: The oxygen sensors are in danger of being damaged when the exhaust manifolds are removed and installed.

If necessary, remove control sensors.

Remove cover from injection valves.

NOTE: Monitor sensors must be marked, risk of mixing up cylinders 1-3 and 4-6.

Unclip the cable from the retainer. Disconnect plug connection. Unclip cable on rear side of engine from cable guide.

Fig 5: Removing Cover From Injection Valves

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NOTE: Rear exhaust manifold with catalytic converter can only be removed after front exhaust manifold with catalytic converter has first been removed.

Remove monitor sensor on front exhaust manifold.
Remove front exhaust manifold with catalytic converter.
Remove monitor sensor on rear exhaust manifold.
Remove rear exhaust manifold with catalytic converter.

Installation:

Clean sealing faces, replace gaskets.

Coat threads with copper paste.

Replace nuts.

Tightening torque. Refer to ENGINE - TIGHTENING TORQUES - 3-SERIES (E46) .