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How to change your external bottom bracket cups?

Change your Road or MTB external bottom bracket cups is not difficult and requires only one specific tool: a bottom bracket spanner.
Typical tools: 5mm Hex Wrench / Bottom Bracket spanner / Mallet / Grease

Changer ses roulements de pédaliers externes : étape 1

Step 1

Loosen the two left crank pinch bolts and remove arm cap.

Changer ses roulements de pédaliers externes : étape 2

Step 2

Lift the stop plate upwards with a screwdriver.

Changer ses roulements de pédaliers externes : étape 3

Step 3

Pull off left arm.

Changer ses roulements de pédaliers externes : étape 4

Step 4

Remove the chain from the chainring. Pull crankset to right to remove right arm. It's sometimes necessary to gently tap with mallet.

Changer ses roulements de pédaliers externes : étape 5

Step 5

Changer ses roulements de pédaliers externes : étape 6

Step 6

Unthread left side cup (Non-drive side) counterclockwise.

Changer ses roulements de pédaliers externes : étape 7

Step 7

Unthread right side cup (drive side) clockwise.

Changer ses roulements de pédaliers externes : étape 8

Step 8

Get the grime out and grease thread.

Changer ses roulements de pédaliers externes : étape 9

Step 9

Install correct spacers as needed (68mm bottom bracket shell: 1 spacer on left side, 1spacer on right side. 73mm bottom bracket shell: 1 spacer only on right side). Thread new cups clockwise into left side and counterclockwise into right side.

Changer ses roulements de pédaliers externes : étape 10

Step 10

Grease spindle surface and press right crank through right side.

Changer ses roulements de pédaliers externes : étape 11

Step 11

Place left arm on to spindle.

Changer ses roulements de pédaliers externes : étape 12

Step 12

Grease thread of arm cap and thread into spindle.

Step 13

Lift the stop plate downwards and tighten the two left crank pinch bolts.

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