CityCyclingEdinburgh was launched on the 27th of October 2009 as "an experiment".
IT’S TRUE!
CCE is 15years old!
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It soon became useful and entertaining. There are regular posters, people who add useful info occasionally and plenty more who drop by to watch. That's fine. If you want to add news/comments it's easy to register and become a member.
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Hi guys,
I've been using a pair of Shimano SPD pedals (PDM520s) for about 18 months...
They don't rotate very smoothly (plus they're prob full of gunk/sediment by now) but I don't know how to loosen them. Is this possible? I've just unboxed a new pair which aren't much better to be honest.
Do I have to get a special tool to adjust this, so they spin round nicely on the cranks? Any tips or tricks of the trade would be welcome.
Cheers
Shimano SPDs should run smoothly for years. There is a special tool for taking them apart. Bicycle Works might have one. Have the pedals been submerged at some point?
The axles are supported on 24 loose ballbearings, with adjusting nut and locknut. Shimano 'requires' two special tools, but I've rebuilt both M520 and M540 pedals using a suitable socket and self-gripping tweezers to deal with the adjusting nut.
The exploded diagram is here:
http://cycle.shimano-eu.com/media/techdocs/content/cycle/EV/bikecomponents/PD/EV-PD-M520-2235_v1_m56577569830608614.pdf
Park Tool suggests that you don't need to disassemble the whole thing to regrease it:
http://www.parktool.com/blog/repair-help/spd-pedal-overhaul
by unscrewing the notched black collar and drawing out the assembly, pumping in new grease and extruding the excess as you reassemble.
I usually disassemble to the last ballbearing and clean it thoroughly. This is a fairly good how-to:
http://www.bikeforums.net/bicycle-mechanics/177050-shimano-m520-bearing-play.html
Failing that, this video might help:
That's great - thanks guys!
Self-gripping tweezers? Google suggests either "conventional" tweezers but lightly rearranged so that the squeeze action opens rather than closes them, or a mole wrench with a needle nose.
I'm assuming the latter?
(Not that I ever expect to use the information, being the pathetic DIY sap that I am...)
(...although I did "repair" our macerator a few weeks ago, for which I awarded myself 200 DIY points which I immediately cashed in for a school-night beer. I also conclude that all plumbing is basically high-risk Lego.)
How many DIY points do you get for having a ScrewFix account?
Yesterday I just turned up with the order number and the junior hacksaw metal blades were waiting for me.
Big car water pump is broken and refusing to budge so I've resorted to a delicate blend of psychology and extreme violence.
I'm assuming the latter?
No, you were correct the first time. They're pretty useful to have:
http://www.spoiltrottenbeads.co.uk/Self-Grip-Tweezers-p173459.html
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