Technical > Wheels, Tyres and Brakes
Swiss top retaining pins
Matt2matt2002:
Had new cables fitted to my Raven by LBS.
Did a good job on the gear cables. Very smooth now.
Re the brakes: I had a new set of pads so thought that since they were doing the cables they may as well fit the new pads.
It appears that the pins do not push down as far as the old ones did.
I had changed the pads a few years ago myself and recall the pins pushing down until the heads) loops were almost flush.
Now they sit a few mm proud.
After a short ride one on the front almost worked itself free.
I managed to save it and returned to the bike shop.
The guy had used the pins that came with the new pads.
He said this type didn't push down flat. I forget the type he called them.
He refitted a new one. And it was proud, like the other 3.
I rode to work just now and the refitted one has worked loose again.
Any thoughts folks.
Hope picture shows the issue.
Picture is of rear brake but all 4 are the same.
Matt
julk:
Mm,
I suspect the groove in the pad which the retaining pin slides down needs to be opened up at the lower side.
That retaining pin should then slide down enough to go through the bottom edge of the brake shoe and stay in place.
Should be easy enough to take the loose pin out and slide the pad out of the shoe to work on it.
Just checked mine and they have a hole top and bottom of the brake shoe for the pin to slide right through.
I can see the pin sticking out of the bottom of the brake shoe and the top is almost flush.
Julian.
Matt2matt2002:
Thanks Julian.
I'll work on that tomorrow.
Not impressed with the bike shop sending me out with brakes in that condition.
Matt
Matt2matt2002:
I just found this from a a few years back...
######£
After playing for a while with the brake pads I realised about the pin and pull it out.
Puting new pads I found some of my new pins wouldn't find the hole in the other side, but the old ones did.
####
Matt
Danneaux:
My own experience mirrors Julian's -- for my original pins. I save an astonishing amount of old bike stuff "in case it is useful someday" and find it often is! Salvaged things like old derailleur B-stop and limit screws, shoe cleat retainers and screws, brake pad holders and such go a long ways toward creating a useful bin of touring and shop spares.
I've occasionally come across pins that seemed intended to bottom out in the shoes themselves rather than travel through to the bottom hole of the pad holder. These I considered yoo dodgy to use and set aside, choosing instead to reuse the ones appropriate for my needs.
You really don't want to have a pad sliding out while parked on a hill.
I'm on my mobile while clearing brush at my little cabin on the coast and can't see your photo too well in the bright sunshine, at the moment so I'll ask a question I'd know if I could see better: Is the closed end of the pad holder facing forward? Not intending to impugn your mechanic, but that could account in part for things loosening so quickly under braking.
All the best,
Dan.
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