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Pedal(s) noisey (I think) - can Shimano SPD pedals be oiled?

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Pedal(s) noisey (I think) - can Shimano SPD pedals be oiled?

Old 04-11-11, 12:25 PM
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hobkirk
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Pedal(s) noisey (I think) - can Shimano SPD pedals be oiled?

I often get a noise under load. I cannot find anything wrong.
  • It often is a click once per crank revolution but sometimes it sounds "crunchy" and occurs throughout the crank stroke.
  • There is no noise when I am not pushing hard
  • It happens whether I am clipped in or not
  • It happens with the middle and small chain rings (I expect it would happen in the large ring but I haven't tested that)
  • I think I can sometimes make it go away by changing the position of my feet slightly, but I cannot figure out what caused the change, if it actually did change, and usually I cannot affect it.
  • I am not skilled enough to crank hard using only one pedal with the other un-clipped.
  • I only have one ear that works so I cannot pinpoint the location. I cranked the pedal mount hard using an Allen socket in back, medium breaker bar, and right and left in the correct direction.
  • There is a tiny amount of play in the bottom bracket, I think (I pushed the end of the crank arms in and out and it was the same as on another bike that has less miles).

The pedals are "PD-M520L MTB Sport Pedals" and installed last July. They have about 5,000 miles.

I couldn't find answers by searching and I am slowly learning the intricacies of bicycles. I found references to "oiling" pedals but only clear details were talking about improving the clip release mechanism. This forum has been a tremendous help in my education. Thanks.

I included pictures on the chance they help.
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Old 04-11-11, 12:30 PM
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Al1943
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Many SPD pedals can be cleaned and greased by removing the pedal from the spindle, exposing the bearings.
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Old 04-12-11, 03:40 AM
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Originally Posted by hobkirk View Post
"PD-M520L MTB Sport Pedals"
Download the ExpolodedView of this pedal from the tech docs section of Shimano's website. You'll need a special tool: TL-PD40. With the special tool, you can remove the pedal body from the spindle. This will let you access the bearings to repack them in fresh grease. Beware: the exploded view says there are 62 bearings balls of size 3/32" in each pedal. Take the pedal apart over an old pie pan.
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Old 04-12-11, 07:07 AM
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Al1943 & laura* - Thank you both - I did find the Shimano exploded view after finding two bad links in the Shimano site. I imagine I can get the pedal apart without the special tool, although I'd probably stop disassembly if I can get it sufficiently open to flood it with a lubricant. Or maybe once I get it to that point it will seem smarter to continue disassembly the rest of the way.

I was actually seeking practical advice - is this something riders do often? How long do these cheapest Shimano SPD pedals last? Often times the practical advice is quite different than the official word (e.g., measuring chain wear w/o the "special tool").

The URL for the Shimano exploded view:
http://techdocs.shimano.com/media/te...9830608614.pdf
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Old 04-12-11, 10:20 AM
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If it sounds "crunchy", there is some contamination in there that needs to be cleaned out. I'd go ahead and take them apart, clean well, lube and reassemble. M520s aren't the bottom of the line (M505s are the bottom in the Shimano line) and are very good pedals. How long they can go between service depends on the conditions you ride in. I've got several pairs in service at this time and a couple of sets have thousands of miles on them with no maintenance other than a drop or two of oil on the release mechanism. The Shimano pedal tool is around $5 and, while you can do it without it, it is worth the price IMHO.
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Old 04-12-11, 11:11 AM
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I agree with CAC that you want to take them apart and clean the insides if they are making crunchy gravel sounds. Besides they need grease, not oil. So you can't just "flood" them and carry on.
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Old 04-12-11, 04:46 PM
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Originally Posted by hobkirk View Post
I imagine I can get the pedal apart without the special tool, although I'd probably stop disassembly if I can get it sufficiently open to flood it with a lubricant. Or maybe once I get it to that point it will seem smarter to continue disassembly the rest of the way.
The reason for the special tool is that the pedal part you need to grip is made of plastic. (The more expensive M540 pedals use metal...)

Originally Posted by hobkirk View Post
I was actually seeking practical advice - is this something riders do often? How long do these cheapest Shimano SPD pedals last?
I had to adjust the bearings of nearly new (~100 miles) Shimano M324 pedals. Sadly they got destroyed by a bus thus I won't find out if they are good for 15000 miles as someone wrote online.
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Old 04-12-11, 05:37 PM
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Once you unscrew the plastic ring there is a sub-assembly of little tiny bearings,
2 races ,
you can clean that , then re-grease, the bearings are many and tiny,
so I wouldn't do more than that .
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Old 04-12-11, 08:31 PM
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You do not need to take the cartridge apart. Clean out the pedal body. and wipe down the bearing assembly. Fill the housing with a light grease and replace the bearing assembly. As you tighten up the axle nut the old grease comes out around the seal.
Repeat as often as you overhaul the hubs. More often in wet conditions.
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