Shimano BR-RS785 Leaking

li2099
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Shimano BR-RS785 Leaking

Postby li2099 » Fri Oct 27, 2017 10:17 am

Hi

I've just noticed my rear Shimano RS785 hydraulic disc caliper is leaking oil when I apply pressure to it.
The oil is coming out from the pistons itself on one side.
Calling around some shops in Sydney, it doesn't look like anyone has it in stock.
Online, only CRC has it listed but it is also out of stock.
Anyone help?
I've read through some people replacing the seals but the actual Shimano seals are also not available to sell.
Looks like my road bike might get a few weeks off.

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biker jk
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Re: Shimano BR-RS785 Leaking

Postby biker jk » Fri Oct 27, 2017 10:39 am

Bike 24 and SJS Cycles have them in stock but it will be two weeks for delivery I'd imagine. Try phoning Shimano Australia to see if they have stock.

li2099
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Re: Shimano BR-RS785 Leaking

Postby li2099 » Fri Oct 27, 2017 10:46 am

biker jk wrote:Bike 24 and SJS Cycles have them in stock but it will be two weeks for delivery I'd imagine. Try phoning Shimano Australia to see if they have stock.

Thanks.
I've tried: Cell, Parks Bikes, TBSM, Giant Sydney, Cycology(where bike was purchased from) and Bike Bug.

Do you guys think Shimano Zee Disc Brake Caliper M640 would work too?
I ride a Giant Defy Advanced SL1 2015 which has post mount brakes.

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biker jk
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Re: Shimano BR-RS785 Leaking

Postby biker jk » Fri Oct 27, 2017 11:10 am

li2099 wrote:
biker jk wrote:Bike 24 and SJS Cycles have them in stock but it will be two weeks for delivery I'd imagine. Try phoning Shimano Australia to see if they have stock.

Thanks.
I've tried: Cell, Parks Bikes, TBSM, Giant Sydney, Cycology(where bike was purchased from) and Bike Bug.

Do you guys think Shimano Zee Disc Brake Caliper M640 would work too?
I ride a Giant Defy Advanced SL1 2015 which has post mount brakes.


Did you call Shimano Australia? If they have stock your LBS could order them and it might only take a few days.

li2099
Posts: 221
Joined: Mon Oct 14, 2013 9:25 am

Re: Shimano BR-RS785 Leaking

Postby li2099 » Fri Oct 27, 2017 11:23 am

biker jk wrote:
li2099 wrote:
biker jk wrote:Bike 24 and SJS Cycles have them in stock but it will be two weeks for delivery I'd imagine. Try phoning Shimano Australia to see if they have stock.

Thanks.
I've tried: Cell, Parks Bikes, TBSM, Giant Sydney, Cycology(where bike was purchased from) and Bike Bug.

Do you guys think Shimano Zee Disc Brake Caliper M640 would work too?
I ride a Giant Defy Advanced SL1 2015 which has post mount brakes.


Did you call Shimano Australia? If they have stock your LBS could order them and it might only take a few days.

Yes in the end, apparently Cell can order it in from Shimano Australia so I've ordered them.
Will need to change my MTB to commuter tyres for now and ride that.

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tomee
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Re: Shimano BR-RS785 Leaking

Postby tomee » Fri Oct 27, 2017 11:24 am

ive had mine leak.
i replaced it with BR805 if you cant find 785 and a post mount adapter.

hell you can even use mtb brake calipers but need the appropriate hose connections

li2099
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Re: Shimano BR-RS785 Leaking

Postby li2099 » Fri Oct 27, 2017 12:03 pm

tomee wrote:ive had mine leak.
i replaced it with BR805 if you cant find 785 and a post mount adapter.

hell you can even use mtb brake calipers but need the appropriate hose connections


Yes those would be an upgrade but looking for a post mount adapter would be a headache as I'm not savvy with bike mechanics. Only ever done gear cables, bleed brakes, general maintenance stuff, etc.
Would have preferred to get it somewhere now/ tomorrow for weekend riding.

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Duck!
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Re: Shimano BR-RS785 Leaking

Postby Duck! » Fri Oct 27, 2017 1:54 pm

li2099 wrote:Do you guys think Shimano Zee Disc Brake Caliper M640 would work too?
I ride a Giant Defy Advanced SL1 2015 which has post mount brakes.

The four-piston caliper is overkill, especially on the rear. Plus it uses different pads, which something extra to consider when buying spares. The M615 or M6000 Deore calipers would be a better match.
I had a thought, but it got run over as it crossed my mind.

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MichaelB
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Re: Shimano BR-RS785 Leaking

Postby MichaelB » Fri Oct 27, 2017 2:36 pm

I use Zee and still alive.
Anyway, back on track, I have some brand new never used RS785 calipers from my setup.

Happy to post them for a reasonable price. I'll PM you my mobile.

li2099
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Re: Shimano BR-RS785 Leaking

Postby li2099 » Fri Oct 27, 2017 2:48 pm

MichaelB wrote:I use Zee and still alive.
Anyway, back on track, I have some brand new never used RS785 calipers from my setup.

Happy to post them for a reasonable price. I'll PM you my mobile.

Great have PM you.

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