Shimano Deore (gear) Trigger problem?

[marinbearvalley]

Hi, new here, hope someone can help.

I can use the single trigger to drop a gear but sometimes when I try to climb back up a few gears, the lever has no resistance and does not take-up the cable slack. (The gear indicator does not move) Sometimes it is fine, other times not - seems to be getting progressively worse. Sometimes I have to keep pressing the lever a few times before it works.

I have tried the usual adjusting the gears at the back and the cable seems free moving, making me think the actual trigger mechanism on the handlebars are at fault. However I am no expert here as you may tell from my terminology!

Have I missed anything or is this a typical kind of problem and do I need to replace the trigger shifter or is there anything to try.

Was going to just take the bike for a service but would like to determine if the part needs replacing first?

If replacement would any Shimano trigger 9 speed (x3) be compatible or do I need an exact match. I know they are not cheap!

 

[2Loose]

http://www.chainreactioncycles.com/Models.aspx?ModelID=477

£20 quid for vanilla Deore shifter pod, I have heard that some people find taking them apart and servicing them works for them, but then I read http://www.cs.hmc.edu/~geoff/deoredx/index.html

 

[marinbearvalley]

http://www.chainreactioncycles.com/Models.aspx?ModelID=477

£20 quid for vanilla Deore shifter pod, I have heard that some people find taking them apart and servicing them works for them, but then I read http://www.cs.hmc.edu/~geoff/deoredx/index.html

Thanks for that. Not sure which is the £20 one though. The link is to one discontinued and not available.

Had seen that they are a nightmare to disassemble. (or more likely reassemble)

As we speak I have taken the shifter off the handlebar. Typical I recently changed the grips which were very hard to fit/remove

Anyway, one thing I have found is a stray frayed wire at the end of the cable. Doubt it would be my luck for it to have been that to cause the problem? Whilst still off the bike I can no longer reproduce the problem!!

Might put it all back together and see what happens. Maybe a quick squirt of some air in the hole? and a tiny amount of some silicone grease spray I have?

I very much doubt it is fixed so any other suggestions very welcome.

 

[Cranky]

I've had this problem with two left hand shifters in the past. Tried dismantling, lubing etc to no avail so just ended up replacing them.

 

[jpembroke]

ratchets go in the end. Time to get a new one.

 

[marinbearvalley]

Got everything back together. Did give a quick spray of silicone grease. Seems to be working well right now. Gear changing seems to be making a more reassuring click now too. Test will be out on the road though. Need to get a replacement cable.

Will see how it goes and keep an eye out for replacement shifters. Will update thread when I know if the problem is fixed (at least for now) or not.

 

[eddiemee]

Strange, I had a problem with my Deore pods this week, but they seized up completely in the highest gear. When I try to put tension in the cable the lever just won't move. Even with the cable completely removed it won't budge. I haven't had time to dissassemble it yet, will do that over the weekend. The pods are only ~1 year old, but as they're quite cheap maybe they're more prone to failures like this and the one the OP described.

 

[marinbearvalley]

Will see how it goes and keep an eye out for replacement shifters. Will update thread when I know if the problem is fixed (at least for now) or not.

Fitted the new cable and went for a ride. Got about 10 miles with plenty of shifting and all seemed well but it then started "slipping again". i.e. had to press the lever a couple of times before it started to "bite" and pull on the cable.

Now looking for replacements.

 

[marinbearvalley]

Now looking for replacements.

Ordered a L+R set of Shimano Deore 590 £29.95 delivered and complete with cables!