11 14 110 Removing and installing lower timing case cover (N74)

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Necessary preliminary tasks:

Remove ENGINE
Remove both cylinder heads. See LEFT CYLINDER HEAD and RIGHT CYLINDER HEAD .
Remove LOWER oil sump section
Remove UPPER OIL SUMP SECTION
Remove alternator BELT TENSIONER
Remove VIBRATION DAMPER
Remove COOLANT PUMP
Remove ALTERNATOR
Remove A/C COMPRESSOR
Remove hub for VIBRATION DAMPER

Undo bolts in sequence (14 to 1).

Fig 1: Identifying Bolt Removal And Installation Sequence

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Remove gear case cover (1) in forward direction if necessary using a plastic hammer (2).

Clean sealing surfaces with special tool 11 4 470 .

Fig 2: Removing Gear Case Cover Using Plastic Hammer

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NOTE: Check jump guard for damage.

Release screw (1).

Tightening torque: see 1AZ in 11 14 CASE COVERS

Remove jump guard (2).

Fig 3: Identifying Jump Guard And Screw

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Remove beaded metal gaskets (1, 2 and 3).

Clean all sealing surfaces with special tool 11 4 470 .

Installation:

Replace beaded metal gaskets (1, 2 and 3) .

Fig 4: Identifying Beaded Metal Gaskets

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Release screws along lines (1).

Remove coolant cap (2).

NOTE: Graphics show N63.

Fig 5: Identifying Coolant Cap And Screws

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Installation:

Replace seal (1).

Fig 6: Identifying Seal

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Installation:

For safety reasons, the coolant supply pipe (1) must be replaced during the scope of gear case cover work (internal leakage).

Drive out coolant pipe (1) in direction of arrow with special tool 23 1 040.

NOTE: Picture shown without end cover for V-chamber.

The end cover does not have to be removed.

Fig 7: Driving Out Coolant Pipe

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Fit beaded metal gaskets (1, 2 and 3).

Coat coolant pipe with lubricant (Circo Light) and move up to limit position.

Installation:

Replace beaded metal gaskets (1, 2 and 3) .

Fig 8: Identifying Beaded Metal Gaskets

Courtesy of BMW OF NORTH AMERICA, INC.

Fit timing-chain cover.

Insert all screws in sequence (1 to 14) and initially tighten to approx. 5 Nm.

Tighten all bolts in sequence (1 to 14).

Tightening torque: see 2AZ in 11 14 CASE COVERS

Installation:

Wait for PU material to emerge at sealing joints.

Carefully wipe off protruding PU material.

Fig 9: Identifying Bolt Removal And Installation Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Replace RADIAL SHAFT SEAL in gear case cover at bottom .

Assemble engine.