ModeratedUser

Hello all,

I'm trying to figure out what is wrong with my setup. First of all, it was working fine before I took things apart to clean it, but it's not now. The front shifter always worked great. Never even bothered trying adjust anything or investigate anything. Just assumed it always works great! Well I cleaned everything up and put it make together, but now there's no "resistance" to keep the derailure into the big chainring. It keeps wanting to go back to the small chainring. I figured that the adjustment would be at the D ring here........



But I can't get the resistance to stop the unwanted movement.

I thought maybe there is suppose to be some adjustment at these two allen bolts, but I doubt it.....



I tried to see if this "questionable" flat washer would make a difference, but it doesn't.



It looks like it was suppose to go here, and I'll put it back there,



So with or without this washer, it's pretty much doing the same. Just how was the "resistance" designed to work on front downtube shifter on the 7400 Dura Ace?

Thanks for reading this and look forward to your comments.

JerrySTL

It's not the allen head bolts on the FD.

It's something to do with the washer. Are you missing any parts? Get things back in the correct order? I believe that this is the correct parts breakdown.
https://c1.staticflickr.com/9/8010/7...754b7231_b.jpg

ModeratedUser

Hmmmmm, I'm not seeing that thin washer on the diagram. I never really took my shifters apart cause they were working fine and pretty clean. I meant I took my whole bike apart, cleaned and replaced some parts. The shifters were working fine and was pretty clean, so I just took them off the bike to clean everything else up.

I have a really bad habit of not documenting how stuff came apart! I always assume I'll be able to put things back together again, cause you know.......it's obvious!

andr0id

It's been about 2 decades since I've worked on one of these, but the Shimano drawing needs to be followed exactly.
Make sure every part goes back on with the correct forward or rear orientation and correct in/out orientation.

When it's stacked up right, there will be a slight front to back wiggle, but it will have tension through the entire range.

The D ring is for adjusting the tension, but if you're having to really crank it down, you've put it back together wrong.

Camilo

I've had that problem with two different FD's and the solution is to find a regular washer that fits between #7 and #14 in the exploded diagram above. It will push the entire assembly outward so the D-ring bolt can apply enough friction when you tighten it.

I have 1,000,000,000 washers in a jar in my garage and just found one that fit there. Nothing special, just a plain old washer with approximately correct inner and outer diameters. But if you're going to by one get galvanized or stainless steel.

It might be that thin washer you are writing about, and if everything is assembled properly and it still doesn't work, just find a thicker one or another thin one to add into that space.

Eric S.

I'm assuming this lever has the spring to balance the feel.

If so, it's possible to mount the lever incorrectly so that the spring does not do its job (I've done it). Proper mounting is with the lever pointing almost to the floor (toward the rear of the bike), pushing forward against the spring tension and tightening the screw to hold it in its "normal" position for the small chain ring.

It's been awhile since I've had a front shift lever off; I think that's how it's done.