Results 1 to 16 of 16

Thread: Shimano PD-M970 bearing service

  1. #1
    Britishbane's Avatar
    Britishbane is offline VSalonistas
    Join Date
    Nov 2009
    Location
    Northern VA
    Posts
    1,499

    Default Shimano PD-M970 bearing service

    I'm attempting to service the bearings in my left pedal. Before scratching the shit out of the pedal and lock bolt it'd be helpful to know which way to loosen the lock bolt (#2 in this tech doc: http://techdocs.shimano.com/media/te...9830608620.pdf).

    So, if I'm looking directly at the pedal spindle, with the pedal body further away from me than the spindle, which way am I turning the lock bolt?

  2. #2
    Too Tall's Avatar
    Too Tall is offline VelocipedeSalon.1
    Join Date
    May 2008
    Location
    DC
    Posts
    14,361

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Britishbane View Post
    I'm attempting to service the bearings in my left pedal. Before scratching the shit out of the pedal and lock bolt it'd be helpful to know which way to loosen the lock bolt (#2 in this tech doc: http://techdocs.shimano.com/media/te...9830608620.pdf).

    So, if I'm looking directly at the pedal spindle, with the pedal body further away from me than the spindle, which way am I turning the lock bolt?
    Counter clockwise.
    Josh Simonds
    www.nixfrixshun.com
    www.bicycle-coach.com
    Vsalon HMFIC

  3. #3
    Britishbane's Avatar
    Britishbane is offline VSalonistas
    Join Date
    Nov 2009
    Location
    Northern VA
    Posts
    1,499

    Default Re: Shimano PD-M970 bearing service

    Roger that. I thought so, but wanted to make sure after my first, inconclusive, attempt. Will put more muscle into it.

  4. #4
    Bssc is offline VSalonistas
    Join Date
    Nov 2008
    Location
    OG sin city
    Posts
    801

    Default Re: Shimano PD-M970 bearing service

    not fun to work on if you have never overhauled a pedal even worse if water got in and rusted things

    vise and padded jaws are a god send or a panavise

  5. #5
    Britishbane's Avatar
    Britishbane is offline VSalonistas
    Join Date
    Nov 2009
    Location
    Northern VA
    Posts
    1,499

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Bssc View Post
    not fun to work on if you have never overhauled a pedal even worse if water got in and rusted things

    vise and padded jaws are a god send or a panavise
    Good minds...I used a bench vise with improvised pad and it came apart with almost no effort. Interior grease was a brown color, hinting at rust although things didn't look too bad in there. Everything is all together again but movement is still rough. I'll take it apart one more time, if theres no improvement perhaps they're toast. 3 years use isn't too bad for a 220lb'er I guess.

  6. #6
    Too Tall's Avatar
    Too Tall is offline VelocipedeSalon.1
    Join Date
    May 2008
    Location
    DC
    Posts
    14,361

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Britishbane View Post
    Good minds...I used a bench vise with improvised pad and it came apart with almost no effort. Interior grease was a brown color, hinting at rust although things didn't look too bad in there. Everything is all together again but movement is still rough. I'll take it apart one more time, if theres no improvement perhaps they're toast. 3 years use isn't too bad for a 220lb'er I guess.
    You can't kill those pedals. Old trick, repack them with simichrome and go for a ride around the block. Disassemble, clean and repack with Phil Wood solid grease. Betcha they will be fine.
    Josh Simonds
    www.nixfrixshun.com
    www.bicycle-coach.com
    Vsalon HMFIC

  7. #7
    GrantM's Avatar
    GrantM is offline VSalonista

    Join Date
    Jun 2008
    Location
    Toronto, Canada
    Posts
    9,621

    Default Re: Shimano PD-M970 bearing service

    The repack trick is to fill the axle hole in the pedal body with grease,
    and when you thread the axle assembly back in the body, all the grease
    will be forced out through the bearings, and all the old stuff comes out,
    bingo, you're done.


    -g

  8. #8
    Britishbane's Avatar
    Britishbane is offline VSalonistas
    Join Date
    Nov 2009
    Location
    Northern VA
    Posts
    1,499

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by GrantM View Post
    The repack trick is to fill the axle hole in the pedal body with grease,
    and when you thread the axle assembly back in the body, all the grease
    will be forced out through the bearings, and all the old stuff comes out,
    bingo, you're done.


    -g
    Well, being lazy I've not gone back for round two. ^^^ This sounds much easier than my first attempt. So, no need to fully disassemble the entire axle assembly, just dump grease into the pedal void and put the axle back in?

  9. #9
    Too Tall's Avatar
    Too Tall is offline VelocipedeSalon.1
    Join Date
    May 2008
    Location
    DC
    Posts
    14,361

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Britishbane View Post
    Well, being lazy I've not gone back for round two. ^^^ This sounds much easier than my first attempt. So, no need to fully disassemble the entire axle assembly, just dump grease into the pedal void and put the axle back in?
    Exactly right.
    Josh Simonds
    www.nixfrixshun.com
    www.bicycle-coach.com
    Vsalon HMFIC

  10. #10
    Applesauce's Avatar
    Applesauce is offline VSalonistas
    Join Date
    May 2009
    Posts
    422

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Britishbane View Post
    Well, being lazy I've not gone back for round two. ^^^ This sounds much easier than my first attempt. So, no need to fully disassemble the entire axle assembly, just dump grease into the pedal void and put the axle back in?
    Yup. Pretend that the spindle assembly is a cartridge. Make sure it's clean and adjusted, and fill it with grease and slam it back together. Part of the awesomeness of Shimano pedals.

  11. #11
    Nathanrtaylor's Avatar
    Nathanrtaylor is offline VSalonistas
    Join Date
    Jul 2009
    Location
    Nashville, TN
    Posts
    485

    Default Re: Shimano PD-M970 bearing service

    They can be torn down to the individual ball bearings, but the clean and repack trick works most times. I've overhauled some really crunchy SPD pedals that had play between the pedal body and the spindle and taken them completely apart to make sure the cones or cups weren't cracked.

    Most cases they weren't cracked or damaged, but cleaning them completely and re-adjusting the bearing preload removed the play in the spindle.

    Regardless of whether I tore them completely apart or not, the final step is always packing the pedal body with grease and screwing the spindle in. Just make sure you screw it in really slowly so you don't pop the seal out of place when the grease comes squishing out.

  12. #12
    Britishbane's Avatar
    Britishbane is offline VSalonistas
    Join Date
    Nov 2009
    Location
    Northern VA
    Posts
    1,499

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Nathanrtaylor View Post
    They can be torn down to the individual ball bearings, but the clean and repack trick works most times. I've overhauled some really crunchy SPD pedals that had play between the pedal body and the spindle and taken them completely apart to make sure the cones or cups weren't cracked.

    Most cases they weren't cracked or damaged, but cleaning them completely and re-adjusting the bearing preload removed the play in the spindle.

    Regardless of whether I tore them completely apart or not, the final step is always packing the pedal body with grease and screwing the spindle in. Just make sure you screw it in really slowly so you don't pop the seal out of place when the grease comes squishing out.
    Thanks for the hand holding everyone. This is tonight's project (saw the Walkmen in concert instead of getting this chore done last night). In my last attempt I took the pedal apart, down to the individual bearings. I guess I just didn't apply enough grease - plan is to inundate that sucker this time around. No play was evident prior to or post first attempt, the pedal is solid - just crunchy.

  13. #13
    Nathanrtaylor's Avatar
    Nathanrtaylor is offline VSalonistas
    Join Date
    Jul 2009
    Location
    Nashville, TN
    Posts
    485

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Britishbane View Post
    Thanks for the hand holding everyone. This is tonight's project (saw the Walkmen in concert instead of getting this chore done last night). In my last attempt I took the pedal apart, down to the individual bearings. I guess I just didn't apply enough grease - plan is to inundate that sucker this time around. No play was evident prior to or post first attempt, the pedal is solid - just crunchy.
    Crunchy could easily mean that the cups and cones are too tight. Try backing off the lock nut at the end of the spindle a tiny bit and doing the same for the upper (outer?) cone, which is also a nut. 1/8th of a turn can mean the difference between too tight and crunch and silky smooth. Too loose and you get play in the spindle. These things are basically really tiny versions of Shimano cup and cone hubs and should be adjusted the same way.

  14. #14
    jamesand is offline VSalonistas
    Join Date
    Nov 2008
    Location
    05403
    Posts
    833

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by Nathanrtaylor View Post
    Crunchy could easily mean that the cups and cones are too tight. Try backing off the lock nut at the end of the spindle a tiny bit and doing the same for the upper (outer?) cone, which is also a nut. 1/8th of a turn can mean the difference between too tight and crunch and silky smooth. Too loose and you get play in the spindle. These things are basically really tiny versions of Shimano cup and cone hubs and should be adjusted the same way.
    Just a heads up - this is a tricky adjustment without the Shimano pedal tool (in my experience). Look before you leap, BritishBane. This tool does a nice job holding everything in place.

    http://www.jejamescycles.co.uk/produ...-tool-7143.jpg
    Start slow, then taper off.

  15. #15
    omnigrid is offline VSalonistas
    Join Date
    Jul 2010
    Posts
    276

    Default Re: Shimano PD-M970 bearing service

    xtr pedal needs some attention.
    dumb question: will any overhaul grease do well for pedals?
    or do you guys have a particular type of grease for such applications?
    I read something somewhere about certain greases deforming rubber seals
    and whatever grease shimano puts into these pedals is super awesome...
    dura ace grease, maybe?

  16. #16
    Britishbane's Avatar
    Britishbane is offline VSalonistas
    Join Date
    Nov 2009
    Location
    Northern VA
    Posts
    1,499

    Default Re: Shimano PD-M970 bearing service

    Quote Originally Posted by omnigrid View Post
    xtr pedal needs some attention.
    dumb question: will any overhaul grease do well for pedals?
    or do you guys have a particular type of grease for such applications?
    I read something somewhere about certain greases deforming rubber seals
    and whatever grease shimano puts into these pedals is super awesome...
    dura ace grease, maybe?
    My guess is yes. I used Phils. Worked fine.

Similar Threads

  1. What is Public Service?
    By Too Tall in forum The OT
    Replies: 20
    Last Post: 08-08-2011, 06:07 PM
  2. Chris King Needle Bearing & Tool Question
    By krooj in forum VELOCIPEDIA
    Replies: 14
    Last Post: 01-24-2011, 09:48 AM
  3. DT 240 Bearing Question
    By ThasFACE in forum General Discussion
    Replies: 9
    Last Post: 01-14-2011, 12:28 PM
  4. Campy UT bearing question
    By Shinomaster in forum General Discussion
    Replies: 11
    Last Post: 09-17-2010, 10:00 AM
  5. DT Swiss 190 bearing question
    By ericpmoss in forum General Discussion
    Replies: 6
    Last Post: 07-03-2010, 10:24 PM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •