Author Topic: help on cranks please !!! (Read 671 times)

dodgydave · « **on:** March 07, 2007, 11:03 AM »

hi guys was just wondering if its a big kob switching from a one piece crank to a 3 piece crank

.....are do i just take out the cups & slide the sealed bearings in

...cheers dave...

harris · « **Reply #1 on:** March 07, 2007, 11:10 AM »

just take out all the hardware, cups and all ,then refit new.

theRuler · « **Reply #2 on:** March 07, 2007, 11:32 AM »

it's both easy and rewarding

gt0733 · « **Reply #3 on:** March 07, 2007, 12:42 PM »

you can get loose ball BB's for 3 piece, and you don't need a hammer! usually 28tpi instead of 24tpi for 1 piece.

rarman1 · « **Reply #4 on:** March 07, 2007, 08:43 PM »

if your taking out cups always use a rubber mallet as it takes the shock out of the strike, then give it some

selfpreservation · « **Reply #5 on:** March 07, 2007, 08:49 PM »

its not a massive job but can be tricky,getting the cups out is easy but sometimes getting the sealed cups in can be difficult at times make your own cup press from 14mm studding nuts big washers wooden blocks with 14mm holes in (to protect the cups ) simply tighten the nuts to press the cups into the bb (grease the bb before you insert them ) it will help if you need to remove them