ES­SEN­TIAL FIXES FROM THE WORK­SHOP...

This month we show you how to ser­vice your bike’s cup and cone bear­ing hubs

Cycling Plus - - BIKE FIT -

UNDO LOCKNUT

For rear wheels, first re­move the cas­sette. Undo the lock nut on the non-drive­side us­ing a cone span­ner. Re­move the lock­ing nut and spacer by hand.

RE­MOVE BEAR­INGS

Care­fully re­move the bear­ings from the race, a mag­netic screw­driver will help. Clean the bear­ings and races us­ing de­greaser and some pa­per cloth. If there are signs of wear in cups and cones they’ll need re­plac­ing.

RE­TURN AXLE AND CONE

Re­turn the axle to the free­hub side. Press it against the bear­ings and ro­tate it to check it’s sealed cor­rectly. Re­fit the cone to the non-drive­side of the axle and tighten un­til it con­tacts the bear­ings, fin­ger-tight will do.

RE­MOVE CONE

Hold the lock nut on the drive­side with one span­ner, then undo the non-drive­side cone with an­other and wind it off by hand. Now re­move the axle from the hub.

AP­PLY GREASE

Ap­ply a healthy dose of grease to the bear­ing race in the hub. Place the bear­ings into the grease to help hold them in place. Once in place you can re­fit the axle and gen­tly turn it to en­sure they are in­stalled cor­rectly.

FI­NAL AD­JUST­MENTS

Re­turn the other nuts, spac­ers and seals to the non-drive­side of the axle in the or­der they were re­moved. Hold the cone and tighten it against the lock­ing nut with a span­ner. Re­fit the cas­sette and quick-re­lease skewer.

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