How hard to replace a chain set?

jedster

My bike has a 105 hollow-tech II chainset. I got some advice here on how to tighten up the left hand crank which had worked loose.

It turns out that I have done some damage - the splines are worn on the crank and to a lesser extent on the axle.

My LBS priced up a replacement left hand crank and it will cost £40. Given that I could get an entire new chain set from Ribble in the summer sale for £72 (LBS price was £130), I've ordered that instead.

The bike is booked in for an annual full service (gets used for 5000 miles per year of commuting in all weathers) so I could pay the LBS to fit the chain set (think it would add £25 plus vat to the service cost).

My question - how tricky is it to swap the chain set over? Do I risk ballsing things up to the point of doing more damage? I'd prefer to have a go really.

Thanks,
J

Doobz

I say have a go mate, Its as easy peasy - check on youtube if you want re-assurance -

When I did my chainset I loosened the two allen bolts on the arm. Removed the black cap. Popped off the left crank arm. Pushed out the right hand side through the BB.. and reverse for setting back up.. You don't need much grease as the chainset should come with a bit allready

nicklouse

if you are replacing the bearings you will need the HT2 tool.

good how toos on parktools webby.

Doobz

yup, always a good idea to have a bb tool to give them a tighten

http://www.ribblecycles.co.uk/productde ... 0000000000



http://www.ribblecycles.co.uk/productde ... 0000000000

ride_whenever

you can get a cheap combo tool that'll do both, but you can use needlenose pliers to tighten the pre-load cap at a push

jedster

Thanks for the input. I have ordered the tools but have already worked out the pliars trick when trying to tighten the (damaged) crank arm

jedster

BTW,

working on the assumption that the BB should still be OK after about 10k miles. Reasonable?

J

Doobz

well if your gonna have the whole lot off you might as well grab a new BB also.. But as the age old saying goes "If it aint broke why fix it"

gkerr4

i have to say - I'd change the BB - they are around £15 for the 105 version - worth doing and you wll get to clean out the BBshell and thread at the same time