ultegra brifter only shifts up
04-26-19, 09:30 AM
#1
GATC
Thread Starter
ultegra brifter only shifts up
I found out midway through my morning commute today that the outer lever (that moves the rear derailer inward) does not work. One time I caught it and it shifted in 2 cogs but mostly it just floats free, no resistance.
Is there anything I can do for this or does it need replacing? It is ~20 years old.
Thanks in advance.
Is there anything I can do for this or does it need replacing? It is ~20 years old.
Thanks in advance.
04-26-19, 09:34 AM
#2
Licensed Bike Geek
You can peel the hoods back, spray WD40 liberally on the shifter bits, blow out with compressed air then some good lube like TriFlow applied. It will be messy while you’re doing all this but this often fixes dead Shimano shifters.
04-26-19, 12:52 PM
#3
GATC
Thread Starter
04-26-19, 01:22 PM
#5
- Soli Deo Gloria -
Join Date: Aug 2015
Location: Northwest Georgia
Posts: 14,779
Bikes: 2018 Rodriguez Custom Fixed Gear, 2017 Niner RLT 9 RDO, 2015 Bianchi Pista, 2002 Fuji Robaix
Mentioned: 235 Post(s)
Tagged: 0 Thread(s)
Quoted: 6844 Post(s)
Liked 736 Times
in
469 Posts
I would spray it with White Lightning as a cleaner and then Boesheild T9 for lube.
04-26-19, 01:29 PM
#6
Full Member
Join Date: Sep 2007
Location: Seattle
Posts: 327
Bikes: Litespeed, O'Brien, Specialized, Fuji
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 18 Post(s)
Likes: 0
Liked 15 Times
in
9 Posts
I don't even bother to peel the hoods, just work the levers and blow Triflow or the like liberally into the mechanism. Enough to dribble down the levers, work the levers, then do it again in a day. I wipe up what I can and wait a few days for more dribble to wipe up. I put these buckets on until the dribble stops.
Of course, you might actually have a broken mechanism. Plenty of other threads about this problem with Shimano brifters.
Of course, you might actually have a broken mechanism. Plenty of other threads about this problem with Shimano brifters.
04-26-19, 01:43 PM
#7
Senior Member
Join Date: Jul 2002
Location: Sacramento, California, USA
Posts: 40,865
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Mentioned: 68 Post(s)
Tagged: 0 Thread(s)
Quoted: 2952 Post(s)
Liked 3,106 Times
in
1,417 Posts
04-27-19, 10:18 PM
#8
Full Member
Join Date: Sep 2015
Location: Denver Colorado
Posts: 339
Bikes: 2020 Pivot Vault, 1983 Rossin Record, Garneau R1, Mesamods home built gravel/rain commuter bike, 1995 Barracuda A2V modified with Surley single speed dropouts, 1969 Bottecchia junkyard special fixed gear, Cervelo P4, Mesamods 650b klunker
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 96 Post(s)
Liked 72 Times
in
50 Posts
04-28-19, 07:15 AM
#9
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,501
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2741 Post(s)
Liked 3,388 Times
in
2,051 Posts
Here's what I usually find when the downshifting starts to deteriorate. 6600 Ultegra 10S
cable frayed at shifter won't allow the cable to release.
cable frayed at shifter won't allow the cable to release.
04-28-19, 08:01 AM
#10
Senior Member
Join Date: Jan 2009
Location: Colorado Springs, CO
Posts: 5,971
Bikes: 2015 Charge Plug, 2007 Dahon Boardwalk, 1997 Nishiki Blazer, 1984 Nishiki International, 2006 Felt F65, 1989 Dahon Getaway V
Mentioned: 54 Post(s)
Tagged: 0 Thread(s)
Quoted: 1364 Post(s)
Liked 1,676 Times
in
827 Posts
