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7

I am somewhat confused by your description " they need pulling almost to the handlebar to brake". If you actually need to adjust the bite-point, that is done by tightening the cable at the brake caliper or by adjusting the pistons or using the barrel adjuster. For mechanical disc brakes with two movable pistons (Defy can apparently have TRP Spyre):...


7

In some cases people have made drop bolts to solve problems like this, but most of the time that's not an appropriate solution compared to just using the right reach brake. Adapters add flex you don't want and disallow use of the tire size the bike is presumably made for that got it to needing longer-than-short-reach brakes in the first place. Shimano makes ...


4

Leaky Shimano brakes very commonly leave a characteristic ring of oil where the piston contacts the pad. If that spot is dry, the bias becomes looking elsewhere for the leak, namely the hub. If you have the ring prominently, you're probably replacing the caliper. Sometimes with leaking calipers you can get to an answer by using alcohol and a rag to get the ...


3

The lever reservoir has a tiny hole to let fluid and air pass in/out of the system. This hole gets closed off by the master piston when the lever is pulled. I've seen similar behaviour to yours once before when the brake had been reassembled (reach was too tight or too loose I forget), such that the master piston was out of place and the breather hole was ...


2

Most levers come with some lubrication at the ball tip of the plunger (aka reach screw), so hopefully some of that escaping is all you're seeing to suggest you've lost fluid. When the snapring pops out like like this it's usually nothing to do with bleeding, so if you have lost fluid it's not clear why. If you have all the parts I would try just putting it ...


1

The brake assembly looks good in your bike. May be some cleaning should do. The side pulls are easy to balance, in my experience, may be I am still a old school guy. The wheel rim looks like a steel one and my two cents would be stay with side pulls. As to the brake pads, if you're planning on to use the same steel rims go for brake pads which are hard (and ...


1

Shimano does not offer a tool to service the brake-bearings. Maybe it helps to see how i fixed the problem: https://forum.tour-magazin.de/showthread.php?268301-Der-quot-heute-hab-ich-geschraubt-quot-Thread&p=6421341#post6421341


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