Need Advice on 9SP STI Maint.

Joel Morrissette

2005-10-17

Try disconnecting the cable from the derailleur and shift. This will tell

you if it's the shifter or the cable that's gummy. Likely a little of each.



1) Flush shifter liberally with WD-40. You'll need to take off the little

inner dust cover that you remove to replace the cables.

2) Lube shifter internals with some oil like tri-flow or Pro-Tech. Do this

liberally. Lube pivot points.

3) At the very least lube your cables and housings. At 5 years, I'd just

replace the cables if they haven't been done since you bought the bike.

4) Lube the derailleur at all its pivot points with Tri-flow



See if that helps.



-Joel



On 10/17/05, Brad Cockman, DC <bra-@gmail.com> wrote:

 

Cable housing?



Chris Boyce wrote:

 

Try blasting the hell out of it with some aerosol Tri-Flow. Use the

little tube the tri-flow comes with to get deep into the shifter and

flush out the dirt and derbis. Move through the full range of the

shifter a few times to help loosen everything up and get the tri-flow in



there and then allow it to drip dry as much as possible. I feel like

this can be a waste of tri-flow and may be gunking up the inner

workings, but it has worked for me.

I'm sure others can comment as well.



-Chris-



Dave German wrote:

 

Hey back yard wrenches,



My rear 9 speed Ultegra shifter is acting up when I try to drop down

to

  smaller cogs. When I push the small lever over to the left I get more

resistance than normal, then the lever is slow to return and move the

derailleur. Sometimes it won't shift, sticks to the left and I have to

pull

the lever back to the right to get it to shift. This shifter is at

least 5

years old and is now on my CCX bike and I'm assuming it may be acting

up

  

due

to extra the dirt and water intrusion. I have read on another online

forum

that it it not recommended to try to disassemble, clean or lube STI

shifters, so I have always left them alone. But some maintenance is

called

for here I'm sure.



Any ideas? Thanks much, Dave.



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Brad Cockman, DC

2005-10-17



Cable housing?



Chris Boyce wrote:

 

Try blasting the hell out of it with some aerosol Tri-Flow. Use the

little tube the tri-flow comes with to get deep into the shifter and

flush out the dirt and derbis. Move through the full range of the

shifter a few times to help loosen everything up and get the tri-flow in



there and then allow it to drip dry as much as possible. I feel like

this can be a waste of tri-flow and may be gunking up the inner

workings, but it has worked for me.

I'm sure others can comment as well.



-Chris-



Dave German wrote:

 

Hey back yard wrenches,



My rear 9 speed Ultegra shifter is acting up when I try to drop down to

smaller cogs. When I push the small lever over to the left I get more

resistance than normal, then the lever is slow to return and move the

derailleur. Sometimes it won't shift, sticks to the left and I have to

pull

the lever back to the right to get it to shift. This shifter is at

least 5

years old and is now on my CCX bike and I'm assuming it may be acting up



due

to extra the dirt and water intrusion. I have read on another online

forum

that it it not recommended to try to disassemble, clean or lube STI

shifters, so I have always left them alone. But some maintenance is

called

for here I'm sure.



Any ideas? Thanks much, Dave.



Chris Boyce

2005-10-17



Try blasting the hell out of it with some aerosol Tri-Flow. Use the

little tube the tri-flow comes with to get deep into the shifter and

flush out the dirt and derbis. Move through the full range of the

shifter a few times to help loosen everything up and get the tri-flow in

there and then allow it to drip dry as much as possible. I feel like

this can be a waste of tri-flow and may be gunking up the inner

workings, but it has worked for me.

I'm sure others can comment as well.



-Chris-



Dave German wrote:

 

Hey back yard wrenches,



My rear 9 speed Ultegra shifter is acting up when I try to drop down to

smaller cogs. When I push the small lever over to the left I get more

resistance than normal, then the lever is slow to return and move the

derailleur. Sometimes it won't shift, sticks to the left and I have to

pull

the lever back to the right to get it to shift. This shifter is at

least 5

years old and is now on my CCX bike and I'm assuming it may be acting up

due

to extra the dirt and water intrusion. I have read on another online

forum

that it it not recommended to try to disassemble, clean or lube STI

shifters, so I have always left them alone. But some maintenance is

called

for here I'm sure.



Any ideas? Thanks much, Dave.



Dave German

2005-10-17



Hey back yard wrenches,



My rear 9 speed Ultegra shifter is acting up when I try to drop down to

smaller cogs. When I push the small lever over to the left I get more

resistance than normal, then the lever is slow to return and move the

derailleur. Sometimes it won't shift, sticks to the left and I have to pull

the lever back to the right to get it to shift. This shifter is at least 5

years old and is now on my CCX bike and I'm assuming it may be acting up due

to extra the dirt and water intrusion. I have read on another online forum

that it it not recommended to try to disassemble, clean or lube STI

shifters, so I have always left them alone. But some maintenance is called

for here I'm sure.



Any ideas? Thanks much, Dave.