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Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 951 (Engine - Repair - Cooper S (W11 Engine)) >> V-ribbed Belt With Tensioner >> 11 28 050 Removing A/C compressor drive belt (COOPER S)

11 28 050 Removing A/C compressor drive belt (COOPER S)

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Special tools required: 

IMPORTANT: Drive belt tensioner is subject to heavy tension. Make sure that locking pin is correctly seated. Mark the direction of rotation of the drive belt if it is to be reused. Replace the drive belt if it is fouled with coolant/engine oil or hydraulic fluid.

Necessary preliminary tasks: 

NOTE: If special tool 11 8 410 is used in a car with an Aisin transmission, special tool 11 8 410 must be changed.

Modify special tool 11 8 410 at studs (1) to 5 mm.

Fig 1: Modifying Special Tool
G00397803Courtesy of BMW OF NORTH AMERICA, INC.

Pull dipstick out of dipstick tube.

Remove tank venting valve.

Insert special tool 11 8 410 as shown.

Fig 2: Inserting Special Tool
G03309766Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Make sure paintwork is not damaged.

Attach special tool 11 8 410 to tensioner (1).

Fig 3: Attaching Special Tool Tensioner
G03309767Courtesy of BMW OF NORTH AMERICA, INC.

Relieve tension of drive belt and block tensioner with locking pin, special tool 11 8 470.

NOTE: A second person may be needed to hep install special tool 11 8 470 in the second bore hole.

Remove drive belt.

Examine drive belt for traces of coolant or oil, replace if necessary.

Assemble engine. Check that drive belt is in correct installation position.