Dura Ace 7700 front (left) shifter repair
#1
Full Member
Thread Starter
Join Date: Mar 2015
Location: The Lou
Posts: 340
Bikes: 82 Trek 710, 90 Trek 750, 86 Vitus, Nishiki Cervino, 1989 Bianchi CdI, 2 Nashbars, an Italian Steel MTB, Sears Spaceliner, and a 74 Schwinn Speedster. I also manage a fleet of Volcanic Patrol bikes, 83 of them.
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 109 Post(s)
Liked 234 Times
in
120 Posts
Dura Ace 7700 front (left) shifter repair
Does anyone know where I can find information on how to repair a Dura Ace 7700 front (left) shifter? I am more of a C&V mechanic and there fore I can fix downtime shifters all day but there new fangled brighter things confuse me.
Any help will be greatly appreciated.
Any help will be greatly appreciated.
#2
Full Member
Join Date: Nov 2016
Location: SoCal
Posts: 489
Bikes: 2014 Bruce Gordon Rock&Road, 1995 Santana Visa Tandem, 1990 Trek 520, 2012 Surly LHT
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 211 Post(s)
Likes: 0
Liked 43 Times
in
35 Posts
What seems to be the trouble? Could be a a fraying cable. Could be old grease (or dirt) needing to be flushed out. But no, brifters, particularly Shimano, can not designed be repaired/rebuilt.
#3
Full Member
Thread Starter
Join Date: Mar 2015
Location: The Lou
Posts: 340
Bikes: 82 Trek 710, 90 Trek 750, 86 Vitus, Nishiki Cervino, 1989 Bianchi CdI, 2 Nashbars, an Italian Steel MTB, Sears Spaceliner, and a 74 Schwinn Speedster. I also manage a fleet of Volcanic Patrol bikes, 83 of them.
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 109 Post(s)
Liked 234 Times
in
120 Posts
It doesn't shift down. Could be an old grease thing but I was hoping that there was a way to rebuild these things.
#4
Senior Member
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,319
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,092 Times
in
723 Posts
As suggested, check inside the brifter for a fraying cable, it is a WHOLE LOT easier to get the head out before it breaks than trying to dig/push/curse it out afterwards.