Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Thread Tools Search this Thread
Old 02-15-10, 04:06 PM   #1
Thread Starter
Join Date: Oct 2007
Posts: 39
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Cleaning Dura Ace 7800 shifter/brake hoods Gunked up!

After a 2000 mile trip with my bike on the top of the car my left shifter is gunked up from salt and road grime.
It is down shifting real slow or just does not engage. I really do not want to disassemble the hoods as I know these can be complicated.

Any quick flush out tricks?
sunnyside is offline   Reply With Quote
Old 02-15-10, 04:21 PM   #2
I suck, but you're worse
Join Date: Jun 2005
Location: LA
Bikes: Motobecane Fantom Uno-Got rid of the rest when I moved to LA:(
Posts: 672
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
well you can try the following-

Use a hose with a presure nozzle to wash up in the brake as best you can, make sure to peel the hood back and get in there as much as possible. Move the levers around as you wash to help dislodge the grime. Let it dry and see if that worked.

If not

Take the lever off the bike and run it under the sink doing the same thing-alternately you can submerge the lever and shake it around while flicking the moving parts.

After it dries you can lube up with some WD40.

make sure to let it dry out as much as possible before lubing or reinstalling. Keep in mind that while most of the lever is Alloy rubber and plastic there are some stainless steel screws, pivots clamps etc that can rust a little so you want to make sure you dont trap moisture in there.

If that doesnt work you will have to take the lever apart.

Good luck

BTW-use hot water if you can, it will help losen dirt that is stuck to the internal lubricants that are in the moving parts.
sooprvylyn is offline   Reply With Quote
Old 02-15-10, 05:06 PM   #3
Senior Member
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,438
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
STI shifters do not like dirt, water, crud, etc. Salty water is probably the worst you can put into your shifters other than sulfuric acid.
Try flushing them out with lots of WD40 or similar. The cable housings may also be full of crud.
I recommend that you not try to take them apart.

Al1943 is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 12:02 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    get answers from real people!
Click to start entering your question.