Rear Derailer roller question ????????
 

I took out the rollers of my rear derailer because I wanted to dismount it from my bike, without breaking the chain..

I noticed that there were no signs of lubrication being applied inside.. Or, has the original lube dried up?

If it does need lubrication, what kind of lubricants should I use? grease?

Thanks..

Clean all the grit out and apply some grease.
Make sure you replace the top and bottom rollers in the right place.

As MichaelW suggests, the pulleys are position-specific. Assuming your der is Shimano, one pulley will be marked with a G. This is the Guide pulley and goes closest to the hanger.

Make sure the bolts are secure when you re-install the pulleys! I've seen too many rear ders explode from tightening them improperly.

I usually clean them thoroughly and throw some Finsh Line X-country lube on the roller inside the pulley. I found that grease just gunks up faster - and we're not talking about bearings. The lube seems to do fine.

-Moab

T-9 Boeshield should do the trick.

Use Lok-tite on the bolts when you put them back in. That will keep them from falling off somewhere down the road.

hey! that happend to me! It spurred a whole set of ideas where I thought of going singlespeed,but that didn't work too well, considering my stubborn determiniation and lack of mechanical skills. Total broken parts: @$#!ed up rear mech, stripped freewheel remover, bent rear axle, and a wheelset that will probably never be used again.