shimano M545 left pedal cap unit bolt fallen off during use I recently (2 months ago) bought my first set of clipless pedals (first pedals I have ever bought, just used default ones before).  Shimano M545.  All was well till this morning when I noticed that the left pedal has lost the bolt on the side that holds it together, (think its called the cap unit bolt).  This cap unit bolt and the washer bits have disappeared, presumably during a ride.  Here is a link to shimano's site that shows the pedal and the cap unit bolt bit:

http://bike.shimano.com/publish/content/global_cycle/en/us/index/tech_support/tech_tips.download.-Par50rparsys-0015-downloadFile.html/09)%20PD-M545%20and%20424%20Overhaul.pdf

I took it to my local bike shop and they say they do not have a bolt for it.  Can this sort of thing be found / bought and replaced or do I have to replace the whole pedal?  

I bought it from Wiggle and have just contacted them about the issue but wanted the advice from the community about how I can deal with this situation.

Thanks
Wiggle will do you a refund as well as a replace. There should be no problem with that as M545's are known to fall apart in the way you describe.  

Sounds like you are looking for a pedal that works well with cleat and without cleat. I do not think the M545 does either job properly, and, as evidenced, can fall apart. They also do not work with some leading brands of 'SPD' footwear.  

I would send them back and upgrade to the plain Time ATAC pedals, also available from Wiggle. These may not work too well with leather soled shoes in the wet, but you can get home from the pub with them and regular trainers without your feet slipping off.  

I have updated the clipless pedal page with my own IMHO on Time Atac pedals:  

What should I look for in clipless pedals and shoes?