Hi.
Just wanted to get some advice on what could be causing this creaking noise which seems to be coming from my crank/bottom bracket.
* its a shimano M770 BB and deore xt crank.
* the creaking noise only happens under load or when going uphills and it is on the downstroke of either pedal, although more often on the left downstroke.
* I installed a new BB and the creak wont go away,
* I also replaced the chain and tightened and greased all of the chainring bolts. (now the chainring bolts are that tight i cant get them off) its still creaking!
* I tried different tensions as the instructions say to torque the bb cups to 35nm, so i tried light and heavy variations, it made no difference.
* Also tried different tensions on the plastic preload screw, which is meant to be 7-9bls of tension. no difference there either.
* Also tried greasing the pedals, no luck
its definitely something to do with the drive train, as there is no creaking when not pedalling.
Any suggestions on what could be causing this creaking let me know ?
ps. Next I might try plumbers tape inside the BB cups..
Just wanted to get some advice on what could be causing this creaking noise which seems to be coming from my crank/bottom bracket.
* its a shimano M770 BB and deore xt crank.
* the creaking noise only happens under load or when going uphills and it is on the downstroke of either pedal, although more often on the left downstroke.
* I installed a new BB and the creak wont go away,
* I also replaced the chain and tightened and greased all of the chainring bolts. (now the chainring bolts are that tight i cant get them off) its still creaking!
* I tried different tensions as the instructions say to torque the bb cups to 35nm, so i tried light and heavy variations, it made no difference.
* Also tried different tensions on the plastic preload screw, which is meant to be 7-9bls of tension. no difference there either.
* Also tried greasing the pedals, no luck
its definitely something to do with the drive train, as there is no creaking when not pedalling.
Any suggestions on what could be causing this creaking let me know ?
ps. Next I might try plumbers tape inside the BB cups..