Shimano Dura Ace 9100 Pedal Service - Bearings and Preload

[@raparee100]

I've had Shimano Dura Ace 7900 pedals for nearly nine years. I service the pedals once a year. Clean and re-grease. It's a good video, particularly making a mark on the preload adjuster cone and the lock ring. Line up the marks as your starting point. I prefer doing the job with proper tools. I have Shimano 17mm and 20mm spanners. Hold and adjust the preload cone with the 17mm and tighten with the 20mm spanner. I think its best to put the pedal in a vice too. I don't have one, so I place the pedal in the clamps of my bike stand. The rubber grips on the clamp will not damage the carbon pedal. Just tight enough to a have reasonable hold of the pedals. The pedal is parallel with the ground in the clamp. I would prefer to hold the preload cone ( 17mm spanner) and tighten the lock ring with the 20mm. Just trying to tighten the lock ring with a spanner can result in too much preload as the 2 will move in unison. And that will destroy the bearings. Peak Torque is right, wearing in is nonsense, if it feels too tight the bearings will be damaged. Better to have the tiniest amount of play than to have it a little too tight, the friction will be great ( harder to pedal, lost watts) and will damage the bearings.

[@staezione]

i have mine 20 years and do nothing on them. still going very loose so very fast

[@Gonzo_The_Great]

@@staezione And travelled around the world twenty times 😁😁

[@bettjeman123]

Brilliant! I had to service mine 2 months ago, & there’s nothing On KZbin to help like this. Thankyou !, I managed to finish it on blind luck & trial & error .

[@PeakTorque]

Thanks. I could believe how fine the adjustment was at first between not enough and too much preload.

[@sc0608023]

Thanks for the video. I have never thought of my pedals (a pair of Ultegra 6800) since I purchased them 2 years ago and they've been working flawlessly till today. After seeing this video, I checked out the pedals and found out that the left one has a tiny amount of play in the axle. Just managed to fix it by myself xD. It turned out that the preload on the bearings was a tad bit too low. After some adjustment and a lot of swearing, I‘ve finally gotten rid of the play but as a result the rotation is not as smooth as before. It's still works well enough though, my feet can't tell the difference, but my hand can feel it. Hopefully the preload now is not too much for the bearings.

[@PeakTorque]

Yes the amount you need to adjust is tiny to get it right. That's why marking the nuts with a pen helps. It's a lot of back and forth.

[@tunichtgut5285]

Be carefully! A little bit of play is fine, but too tight will ruin the bearing within a few rides. I found that Shimano SPD SL pedals need almost no maintenance. Re-greasing once a year is more than enough. I have a PD-6610 with 50000 km on them, which I have never serviced and the bearings still are fine.

[@lucycat7585]

Thanks, man! This saved me in fixing that annoying axle play.

[@David..]

I didn’t watch this video prior to disassembling the pedal to put some grease in. Boy is he right when he says that without marking a reference you can get into a pickle. Good god, what a pain in the ass, any movement it seemed was either extremely tight or too loose. Took me an hour of futzing to get the pre-load right and I usually can do the pre-load perfectly on a set of wheels in a matter of minutes.

[@koko_5662]

One of the most fiddly tasks, second to cleat positioning. The discrete notches on newer DA/Ultagra hubs are a godsend for preload, wonder if that will make it to the next gen of Shimano pedals.

[@davidstecher1171]

Please, what is the wonderful music you played in the background of your video while explaining - how to adjust the bearings?😎

[@jbaairways2763]

This video helps a lot, thanks P Torque

[@tylertremble3652]

Thanks for the vid. Fixed that little squeak.

[@gerbryf]

Thanks for the video. One question, are both the left and right pedal 'locknuts' a left hand thread? I would have thought that one side would be an ordinary thread and t'other a left hand thread.

[@gerbryf]

Just listened again, you did say that the drive side pedal locknut is a left hand thread. I take it that the nds pedal locknut is a right hand thread.. Thanks.

[@Hard_Work_Is_Rewarding]

Hi, between the preload where there is some play and where there is too much of it there are stages where the pedal turns more and less freely by the looks of it. Do you select that by taste?.. Have you found some manuals or serious sources which talk about the "simple maintanance trick" where you push the old grease by the new one by putting it into pedal and pushing through the seal? I found it on youtube only. Also, that additional bearing deep inside the shaft. Is it sealed? Is it easy to lose it's balls during maintanance or adjustments?.. Could not find a proper detailed schematics of that particular one. There is an explosion scheme on the Shimano dealer's manual but it is not detailed enough. Thanks

[@wichersham]

Great instruction! Very helpful.

[@sebastianoraffaelli1043]

Thank you for the infos! There's only a thing i didn't get: how do the lower bearings manage to stay upper than the base of the pedal? I mean, I disassembled my Dura-ace 9000 and in one of them the lower bearings tend to fall off to the base of the pedal (while in the other pedal they keep in contact with the buttonhole)

[@AMWChannel]

I got ultegra r8000 paddle. Its that got preload bearing. Because i notice. That have only one nut on it

[@amidatongassassin]

Marvelously useful video

[@mirceaandreighinea]

is it really anther needle bearing in there? some say it is not (as 9000 had). thank you, great video!

[@PeakTorque]

It might not be, maybe a bronze bearing.

[@empijao]

Están hechos para durar poco, ese rodamiento principal con bolas tan pequeñas lo convierte en un pedal frágil y de poca duración pues marca el eje con esas bolas tan pequeñas

[@alanw.4511]

How did you do that pedal x-ray? Are you an engineer? Good video!

[@mikeypalmer3977]

As usual useful info.

[@martinford2932]

What are the ball bearing size

[@barefeg]

play after only 4k km? ouch! is that all dura ace?

[@PeakTorque]

im a fat lump

[@philippbeckonert1678]

: That can happen but it's only minute. With pedals that have industrial bearing and in a small size you can almost throw them in the bin after 4k ;)

[@rogercantwell3622]

The sealing isn't great, either. If water gets in, the inboard bearing rusts and you need a new axle assembly at the very least. The races in the pedal body usually survive, as they are further from the seal.

[@batbawls]

I like the name

[@papawhisky2935]

How about you address the elephant in the room? You've changed your channel's name :O

[@PeakTorque]

Now you've pointed that out, I don't have to :)