DaleKamakazi Posted July 7, 2020 Share Just checking to see if anybody else has had an issue with the crank arm stripping and not tightening onto the axle. Shimano is blaming the mechanic for over tightening the arm onto the axle when he phoned them for advice .My mechanic says he tightened it to 45nm as suggested by Shimano and I believe him. I then took the bike to Cyclelab for assistance as I had bought the bike from them. They showed it to the Shimano rep who blamed the mechanicThis was one of the first XTR 9120 in SA and I believe that this is going to be a big problem with the design and fastening mechanism of this Crankset. Two types of metal(a hard axle and a soft ALU crank) and then a complex adjustment ring to take up the play after tightening with a torque wrench.Apparently this is the 3rd bike to experience this issue lately according to the mechanics at Cyclelab who have been told so by Shimano. Shimano is full on blaming the mechanics for over torquing. DieselnDust 1 Link to comment Share on other sites More sharing options...
Eldron Posted July 7, 2020 Share The only issues I've heard with this crank so far are mechanics knackering these cranks by installing it the old/wrong way (crank arm on, take up tension, tighten bolts) - the new way is obviously crank on, tighten, take up tension. Try contacting Shimano (Coolheat) directly - they're a great bunch of guys and always happy to help. Link to comment Share on other sites More sharing options...
DieselnDust Posted July 7, 2020 Share was the 3mm rubber space facing the right direction?or was the 4.5mm spacer used? that's about the only thing to get wrong. Its installs in exactly the same way as a SRAM BB30/BB386 crank so I would be heading directly to Coolheat to get that crank warrantied.Even if you take up the preload first then tighten doiwn it will just be tight, It should not crack. Link to comment Share on other sites More sharing options...
MudLark Posted July 7, 2020 Share Very interesting. Going to be watching this with curiosity. Shimano's quality control is normally very good – it's going to be surprising if this is a design or materials defect. But nothing is impossible, that's for sure. Link to comment Share on other sites More sharing options...
DaleKamakazi Posted July 15, 2020 Share Just wanted to say a very big thank you to Ian at CoolHeat(shimano) for the great customer service. Ian helped me to replace my Crankset. shaper, Danger Dassie, gummibear and 5 others 8 Link to comment Share on other sites More sharing options...
Matchstix Posted July 15, 2020 Share Glad you had a positive experience. Link to comment Share on other sites More sharing options...
ichnusa Posted July 15, 2020 Share Good on them Link to comment Share on other sites More sharing options...
Long Wheel Base Posted July 15, 2020 Share Just wanted to say a very big thank you to Ian at CoolHeat(shimano) for the great customer service. Ian helped me to replace my Crankset. Did they still blame the installer or product defect? Link to comment Share on other sites More sharing options...
Eldron Posted July 15, 2020 Share Just wanted to say a very big thank you to Ian at CoolHeat(shimano) for the great customer service. Ian helped me to replace my Crankset. Awesome awesome. The guys from Coolheat take quite an unfair beating here on thehub so it's nice to see them praised when they do good. DieselnDust 1 Link to comment Share on other sites More sharing options...
CAAD4 Posted July 15, 2020 Share There are some really good blokes there. Vuil, but nice, knowledgeable chaps... Link to comment Share on other sites More sharing options...
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