Anyone opened up a Di2 Front mech for servicing?
Moderator: robbosmans
-
- Posts: 291
- Joined: Wed Jun 09, 2010 10:44 am
So one of my Di2 Front mechs has become noisy, shifting a bit sluggish and has a developed a bit of an annoying clicking when auto-trimming.
Bearing in mind its had about 10,000miles over 18 months in the worst kind of weather the UK has experienced in a century! So its well used and I'm not too upset if it needs replacing.
A fix may be possible, but I don't want to destroy it trying, as its currently working and usable.
There's a couple screws that seem to hold the casing for the motor internals on, indicating it could be possible to open this up, clean/lube it, work out what that click is (sounds like the motor is just trying to over trim and hitting a stopper or dropping of the end of a thread and looping round again. Or could be that its all one common problem and a motor mounting point has broke off, which would explain all of the symptoms.
Anyone took one apart before?
Bearing in mind its had about 10,000miles over 18 months in the worst kind of weather the UK has experienced in a century! So its well used and I'm not too upset if it needs replacing.
A fix may be possible, but I don't want to destroy it trying, as its currently working and usable.
There's a couple screws that seem to hold the casing for the motor internals on, indicating it could be possible to open this up, clean/lube it, work out what that click is (sounds like the motor is just trying to over trim and hitting a stopper or dropping of the end of a thread and looping round again. Or could be that its all one common problem and a motor mounting point has broke off, which would explain all of the symptoms.
Anyone took one apart before?
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
-
- Posts: 291
- Joined: Wed Jun 09, 2010 10:44 am
Ok,
So temptation got the better of me.
First, 2 mini screws and the biggie out, allows the cover to be gently seperated from the main body...
Next, slide off the clip-rings from both ends of the "push-rod" (for want of a better name)
Now, the motor body can be rotated around the motor end of said push rod...
Here all my problems are revealed. The click is not a click, its a dry creak. This rod end hinge joint has become practically seized. The motor is having a devilish time trying to force the rod around this joint, its dry creaking when attempting micro-steps, and is causing the motor to whine under extra load.
Lubed up this joint (and the lower one).
Slid the clips back on, rotate the motor body back into place. Case back on, 3 screws in.
Back on the bike and it sounds like new
So temptation got the better of me.
First, 2 mini screws and the biggie out, allows the cover to be gently seperated from the main body...
Next, slide off the clip-rings from both ends of the "push-rod" (for want of a better name)
Now, the motor body can be rotated around the motor end of said push rod...
Here all my problems are revealed. The click is not a click, its a dry creak. This rod end hinge joint has become practically seized. The motor is having a devilish time trying to force the rod around this joint, its dry creaking when attempting micro-steps, and is causing the motor to whine under extra load.
Lubed up this joint (and the lower one).
Slid the clips back on, rotate the motor body back into place. Case back on, 3 screws in.
Back on the bike and it sounds like new
Last edited by WeightySteve on Wed Sep 12, 2012 3:33 pm, edited 1 time in total.
great work ..agree needs to be stickied
-
- Shop Owner
- Posts: 1980
- Joined: Sat Jun 13, 2009 4:02 am
- Location: NoVA/DC
i like how it took you all of an hour and one minute to post the first query, sit around waiting for nobody to reply, get antsy, take the der off your bike, take it apart, take pics, post all this new info. you and i must be related!
-
- Posts: 380
- Joined: Wed Jun 10, 2009 2:16 pm
- Location: Austin, Texas
- Contact:
Very good work!! Thanks for posting with pictures as I'm sure someone along the way will benefit.
- Powerful Pete
- Moderator
- Posts: 4132
- Joined: Fri Dec 10, 2004 10:22 am
- Location: Lima, Peru and the Washington DC area - it's complicated.
Stickied, at users' requests, and given the courage of the OP and the success in the "operation".
Nice work!
Nice work!
Road bike: Cervelo R3, Campagnolo Chorus/Record mix...
Supercommuter: Jamis Renegade...
Oldie but goodie: De Rosa Professional Slx, Campagnolo C-Record...
And you can call me Macktastik Honey Pete Kicks, thank you.
Supercommuter: Jamis Renegade...
Oldie but goodie: De Rosa Professional Slx, Campagnolo C-Record...
And you can call me Macktastik Honey Pete Kicks, thank you.
- sled driver
- Posts: 18
- Joined: Thu Jan 20, 2005 1:05 am
- Location: Seattle, Washington
I had the chrome peel/flack off a section of my Di2 front derailleur cage. Called the Shimano rep & they sent me an advanced replacement.
All Di2 products are designed not be serviced in any way (no lube or solvent cleaning recommended)
Shimano offers a 3 year warranty on all Dura Ace components.
You definitely got your monies worth in miles & conditions used. Plus did a great job of troubleshooting & fixing the problem
As the years add up & the warranty is long expired I would diffidently take mine apart to see what makes it “tick” if it gave me problems.
All Di2 products are designed not be serviced in any way (no lube or solvent cleaning recommended)
Shimano offers a 3 year warranty on all Dura Ace components.
You definitely got your monies worth in miles & conditions used. Plus did a great job of troubleshooting & fixing the problem
As the years add up & the warranty is long expired I would diffidently take mine apart to see what makes it “tick” if it gave me problems.
2018 BMC Teammachine SLR01 DISC, R9170 Di2, Dura Ace R9170-C40-TL
2017 BMC R01 RoadMachine, R9170 Di2, Reynolds Attack
2015 GT Grade, Ultegra Di2, Reynolds ATR
2010 S Works Epic, Sram XX1, Carbon Roval Control SL
2017 BMC R01 RoadMachine, R9170 Di2, Reynolds Attack
2015 GT Grade, Ultegra Di2, Reynolds ATR
2010 S Works Epic, Sram XX1, Carbon Roval Control SL
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com