Hopefully someone can help me out with this:
My crankset developed a pretty loud creak on loading (especially uphill) recently so I took my bike to my LBS.
LBS (very experienced mechanics) have checked over my SLX M660 crankset (triple converted to a double and bash), bottom bracket swapped and checked,greased, bearings checked, threads faced, chainring bolts checked, pedals swapped and checked, basically everything checked over but the right arm still creaks!
The LBS guys think it’s a problem with the right arm crank bonding (at the connection with the axle?), if I push the crank toward the chain stays you can hear the creak.
I bought it from Chainreaction back in 2012 (still in good condition visually, no cracks anywhere)- probably a grey import as didn’t come in a box, the LBS reckon this means it’s not under any warranty with Shimano, anyone experience this? LBS think it’s pretty rare!