11 31 001 Replacing camshaft

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 MINI Cooper, 2007 MINI Cooper, 2006 MINI Cooper, 2005 MINI Cooper, and 2004 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

For Special Tool identification, see ENGINE - SPECIAL TOOLS - COOPER (1.6L) R50/W10 .

Special Tools Required:

11 8 250
11 8 370

Necessary Preliminary Tasks:

Remove spark plugs. Refer to 12 12 011 REPLACING ALL SPARK PLUGS .
Remove wheel arch liner. Refer to 51 71 040 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT WHEEL ARCH LINER .
Remove cylinder head cover. Refer to 11 12 000 REMOVING AND INSTALLING/SEALING CYLINDER HEAD COVER (W10) .
Remove left engine mounting. Refer to 22 11 001 REPLACING RIGHT ENGINE MOUNT .
Remove hydraulic chain tensioner. Refer to 11 31 091 REMOVING AND INSTALLING OR REPLACING HYDRAULIC CHAIN TENSIONER .
Remove rocker arm shafts. Refer to 11 33 020 REMOVING AND INSTALLING OR REPLACING ROCKER ARM SHAFT .

Fit special tool 11 8 370 on cylinder block (1) and fixture of engine mounting (2).

Fig 1: Identifying Support Arm On Cylinder Block

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connector of camshaft sensor. Remove retaining screw (1) and camshaft sensor (2).

Installation Note:

Apply a thin coating of clean engine oil to seal.

Tightening torque, refer to 13 62 1AZ in FUEL SYSTEM - TIGHTENING TORQUES - COOPER (1.6L) R50/W10 .

Fig 2: Removing Retaining Screw And Camshaft Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate crankshaft until triangular adjustment mark (2) on camshaft gear is at 12 o'clock.

IMPORTANT: For assembly, mark timing chain at triangular adjustment mark (2) with paint (1). Mark vibration damper and timing case cover with paint.

NOTE: See Fig 3. The brass-colored links are of no importance to the timing.

Fig 3: Identifying Triangular Adjustment Mark

Courtesy of BMW OF NORTH AMERICA, INC.

Secure special tool 11 8 250 to camshaft gear.

Slacken central bolt (1).

CAUTION: Do not remove central bolt (1) yet.

Fig 4: Locating Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Make sure that the marking on the camshaft gear and the color marking are aligned.

Remove central bolt.

Tightening torque, refer to 11 12 5AZ in ENGINE - TIGHTENING TORQUES- COOPER (1.6L) R50/W10 .

Fig 5: Aligning Marking On Camshaft Gear With Timing Chain

Courtesy of BMW OF NORTH AMERICA, INC.

Remove all camshaft bearing caps and camshaft.

NOTE: Alignment and numbers (1-5) of camshaft bearing caps.

Fig 6: View Of Aligning Numbers Of Camshaft Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

Measure cam wear (measurement of non-worn area minus measurement of worn area) and replace camshaft if the result is outside the permitted values.

Cam wear: refer to ENGINE - TECHNICAL DATA - COOPER (1.6L) R50/W10 .

Non-worn area.
Wear.
Bearing journal.
Cam.
Wear zone.

Fig 7: Measuring Cam Wear
Courtesy of BMW OF NORTH AMERICA, INC.

Installation Note:

Using a feeler gauge (1), measure the camshaft axial play between camshaft stub (2) and cylinder head (3).

Refer to ENGINE - TECHNICAL DATA - COOPER (1.6L) R50/W10 .

Fig 8: Measuring Camshaft Axial Play

Courtesy of BMW OF NORTH AMERICA, INC.

Installation Note:

Lubricate camshaft bearing journals with clean engine oil.
Install camshaft bearing caps in correct installation sequence.
Lubricate rocker arm rolling area with clean engine oil.

CAUTION: If the camshaft is replaced because of cam wear or damage, you must also replace the rocker arms.

Assemble engine.