105 shifter faulty?

Workshop tales, trials and disasters.
Maintenance tips, techniques and myths.
Technical discussion, description and outright lies

105 shifter faulty?

Postby brit_in_oz » Thu Jan 13, 2011 4:40 pm

Hi

My 105 5600 shifters are around ayear old and have always worked well until yesterday. My left shifter will change up to the big ring but not down. If i remove the cable tension the ratchet will spring back and release the cable as it should, but as soon as i put it on the front derailleur and tighten the cable, their is not the feel of the 'click' when the shift starts to drop the chain nto the small ring, and the shifters feels like their is no tension / resistance on it like i would expect. When i pulled the brake lever i could see the cable was still in the position of the big ring, rather than having been released back loose when you throw the lever. Has anyone experienced this, and can you fix this yourslef? Luckily i have just ordered SRAM force but i wanted to sell the groupset as a whole when i pull it off the bike as the rest are perfect.
Don't mistake lack of talent for genius
brit_in_oz
 
Posts: 170
Joined: Mon May 10, 2010 9:04 pm
Location: Mount Waverley

by BNA » Thu Jan 13, 2011 8:36 pm

BNA
 

Re: 105 shifter faulty?

Postby drubie » Thu Jan 13, 2011 8:36 pm

The later shimano shifters seem to have acquired a reputation for abnormal wear on the gear cable at the shifter end (fraying the cable, poor shifting is the result). You'll need to open it up to have a look, but there's more than one thread here about poor shifting performance and frayed cables.

So... you should be OK once the cable has been replaced. I don't have Shimano stuff so I can't help you about opening it up to take a look.

http://www.bicycles.net.au/forums/viewtopic.php?f=34&t=28961
So we get the leaders we deserve and we elect, we get the companies and the products that we ask for, right? And we have to ask for different things. – Paul Gilding
but really, that's rubbish. We get none of it because the choices are illusory.
User avatar
drubie
 
Posts: 4611
Joined: Wed Oct 22, 2008 10:12 am
Location: New England

Re: 105 shifter faulty?

Postby twizzle » Thu Jan 13, 2011 8:46 pm

The 105 5600 is a triple shifter, and usually set up on low/middle instead of middle/upper. If the cable tension is too high, such as when you shift past middle to the first trim position and the derailleur is locked on the upper stop, the ratchet mechanism doesn't like this when you try and dump the cable... and breaks. I never broke my shifter, but I sure as heck got stuck in the big ring a few times, and the only solution was to release the cable tension by moving the upper stop. After that, I switched to using the middle/upper positions and never had another problem.

Try WD40 into the mech, set it up in middle/upper, and see if it works. If not... it's yet another dead 105 shifter.
I ride, therefore I am.
...real cyclists don't have squeaky chains...
User avatar
twizzle
 
Posts: 6382
Joined: Wed Aug 13, 2008 11:45 am
Location: Taking a break.

Re: 105 shifter faulty?

Postby wombatK » Thu Jan 13, 2011 9:05 pm

It's a common problem (google 105 left hand shifter), and it happened to me too - bike was a few days more than a year old. LBS was happy to replace it under warranty.

Shimano Australia provides a 2 year warranty on all its components, and even without that, something that fails in even 2 years is covered by statutory warranty as it is not merchantable quality. Take it back to the LBS you bought the bike from.

Cheers
WombatK

Somebody has to do something, and it's just incredibly pathetic that it has to be us -Jerry Garcia
User avatar
wombatK
 
Posts: 5097
Joined: Thu Jul 10, 2008 9:08 pm
Location: Yagoona, AU

Re: 105 shifter faulty?

Postby brit_in_oz » Thu Jan 13, 2011 9:15 pm

Thanks for the reply. I should have said 5600 series not specifically 5600 (as pposed to 5700). I have replaced the cable but no improvement, still get the cable clicking down when not tensioned but will not when loaded ( or even when intentionally backed off) the wierd thing is most threads I have read appear to say once its gone it won't work under any condition whereas mine seems to be okwhen not under tension. Will a wd40 application help?
Can't take it back as its a imported japanese bike :(
Don't mistake lack of talent for genius
brit_in_oz
 
Posts: 170
Joined: Mon May 10, 2010 9:04 pm
Location: Mount Waverley

Re: 105 shifter faulty?

Postby wombatK » Thu Jan 13, 2011 9:53 pm

brit_in_oz wrote:Can't take it back as its a imported japanese bike :(

Have you asked the seller what they are prepared to do e.g. if you mail the faulty shifter to them, the well-known fault should be perfectly clear to them; a more reasonable supplier might even offer to send you the replacement - really Shimano should have issued a recall on these, and most suppliers know it.

Let's suppose the seller won't help you, you should try Shimano Australia.

Let's suppose even they won't help you : can you think of any reason at all why you'd be prepared to pay money for a shimano component again ? Paying money for a new 105 shifter would be throwing good money after bad.

The shifter can not be repaired - it's a dud plastic part in them that fails. It's a well-known fault, and any respectable supplier should be prepared to make it good, as should any respectable manufacturer (Shimano).

Cheers
WombatK

Somebody has to do something, and it's just incredibly pathetic that it has to be us -Jerry Garcia
User avatar
wombatK
 
Posts: 5097
Joined: Thu Jul 10, 2008 9:08 pm
Location: Yagoona, AU

Re: 105 shifter faulty?

Postby brit_in_oz » Fri Jan 14, 2011 7:02 pm

Thanks for the advice, given Japan is a long way away i emailed Shimano here - the warranty guy is on leave till the 24th but hopefully they will come good. Lucky thr day before i happened to order a SRAm force groupset - so if they send a new one i iwll have a full groupset to sell instead of a partial :)
Don't mistake lack of talent for genius
brit_in_oz
 
Posts: 170
Joined: Mon May 10, 2010 9:04 pm
Location: Mount Waverley

Re: 105 shifter faulty?

Postby twizzle » Sat Jan 15, 2011 9:32 am

brit_in_oz wrote:Thanks for the reply. I should have said 5600 series not specifically 5600 (as pposed to 5700). I have replaced the cable but no improvement, still get the cable clicking down when not tensioned but will not when loaded ( or even when intentionally backed off) the wierd thing is most threads I have read appear to say once its gone it won't work under any condition whereas mine seems to be okwhen not under tension. Will a wd40 application help?
Can't take it back as its a imported japanese bike :(


Is the ratchet only failing when trying to dump from the middle position, or is it stuffed for upper as well?
I ride, therefore I am.
...real cyclists don't have squeaky chains...
User avatar
twizzle
 
Posts: 6382
Joined: Wed Aug 13, 2008 11:45 am
Location: Taking a break.

Re: 105 shifter faulty?

Postby brit_in_oz » Sat Jan 15, 2011 4:13 pm

From any position - when you move the lever their is virtually no resistance when under tension connected to the derailleur, however, when out of the derailleur it will click down and release the cable.
Don't mistake lack of talent for genius
brit_in_oz
 
Posts: 170
Joined: Mon May 10, 2010 9:04 pm
Location: Mount Waverley

Re: 105 shifter faulty?

Postby twizzle » Sat Jan 15, 2011 8:32 pm

brit_in_oz wrote:From any position - when you move the lever their is virtually no resistance when under tension connected to the derailleur, however, when out of the derailleur it will click down and release the cable.


Yep - that's really dead. WD40 is about the only thing you could try at this point, it might free it up.
I ride, therefore I am.
...real cyclists don't have squeaky chains...
User avatar
twizzle
 
Posts: 6382
Joined: Wed Aug 13, 2008 11:45 am
Location: Taking a break.

Re: 105 shifter faulty?

Postby foo on patrol » Sun Jan 16, 2011 6:20 am

I have just had mine play up. Shifted to the biggy and when I went to change down it went crack and nothing happened, cable is still tight. :(
I don't suffer fools easily and so long as you have done your best,you should have no regrets.
Goal 6000km
Image
User avatar
foo on patrol
 
Posts: 4073
Joined: Sat Dec 19, 2009 10:12 am
Location: Sanstone Point QLD


Return to The Shed

Who is online

Users browsing this forum: No registered users



Support BNA
Click for online shops
Torpedo 7 Torpedo7 AU
Ground Effect Ground Effect NZ
Chain Reaction Cycles CRC UK
Wiggle Wiggle UK
Cycling Express Cycling Express
Ebay Ebay AU
ProBikeKit ProBikeKit UK
Evans Cycles Evans Cycles UK
JensonUSA Jenson USA
JensonUSA Competitive Cyclist