>From the diagram you attached these look like near straight-up copies of
the Weinmann centerpulls.
* Assemble the brake arms loosely on the bridge, springs included, with the
arms over-extended. The cross-arms should be *below* the hooks an the
bridge.
If there is a tab near the center-line of one arm, and a slot on the
other, make sure they are engaged. These cannot be seen on the diagrams.
* Place the springs in their proper positions against the hooks on the arms
and the bridge.
* Work the arms, together, back into their proper alignment. You will need
to "force" the arms up and over the "hooks".
* Once properly aligned tighten the pivot bolts to spec and your done. You
will need to hold the arms "closed" while you tighten.
You may want to tighten from side to side to tighten slowly and check
the alignment remains correct.
The trick is to leave the arms loose enough so you can clear the hooks.
The lower portion of the brake arms give you a huge mechanical advantage
over trying to force the springs alone over the hooks.
I've torn those down many times and reassembled without problems, once I
learned this trick. If this doesn't work, then the only issue remaining
would be trying to install the springs incorrectly. Make sure they are in
the right orientation? Take a look at the brake you haven't disassembled
for additional guidance.
gajett
On Saturday, July 2, 2016 at 10:04:05 PM UTC-7, Mark Wilkins wrote:
>
> I have some older Shimano Tourney center-pulls that I'm going to try
> on my Ram. I disassembled one of the brakes to clean it up a bit, and
> now I simply cannot get it back together. The problem is trying to
> get both springs up under the hooks on the brake bridge.
>
> Here are the brakes:
>
> http://www.velo-pages.com/main.php?g2_itemId=6928&g2_imageViewsIndex=1
>
> Anyone had to reassemble one of these? Have any suggestions?
>
> Thanks!
>
> Mark
>
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