Author Topic: Rear brake caliper  (Read 1744 times)

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Offline Hamilton

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Rear brake caliper
on: 07 April, 2021, 05:04:35 PM
Had a go at replacing the brake pads and now I'm in the sh#t , the caliper bolts undid easily enough , but despite soaking the pins with penetrating fluid for months and using a hair dryer to heat them up , one of the pins won't budge and is rounded off , I have undid the banjo and removed the caliper , will an engineering place be able to drill out the pin , or will I have to buy a new caliper .

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Offline Paul2bikes

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Re: Rear brake caliper
Reply #1 on: 07 April, 2021, 06:10:05 PM
I'd use an impact driver, if it's too rounded for the alan key bit, try a torx bit a size bigger.

Then when fixed don't tighten to 18Nm, I nip mine by hand, checked it, my nip is 9Nm.
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

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Online tiggersteve

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Re: Rear brake caliper
Reply #2 on: 07 April, 2021, 07:02:57 PM
What he said  :0461:
But bang the torx bit in then put the impact driver to tighten and give it a clout before untightening often cracks it,
do the same with stuck wood screws, nip em before undoing,
If it doesn't work you could try splitting the caliper and trying a small pair of stilsons on the pin, they grip as you turn them,

 https://uk.rs-online.com/web/p/wrenches/1780317/?cm_mmc=UK-PLA-DS3A-_-google-_-CSS_UK_EN_Hand_Tools_Whoop-_-Wrenches_Whoop+(2)-_-1780317&matchtype=&pla-300345130733&gclid=EAIaIQobChMIpqyXzNvs7wIVTe7tCh2jTAVqEAQYBCABEgLTk_D_BwE&gclsrc=aw.ds


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Offline Sidewinder

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Re: Rear brake caliper
Reply #3 on: 07 April, 2021, 07:06:36 PM
Hammering a torx in is a good idea.  If you decide to try drill it out, left hand drill bits are a thing and not expensive for a set - drill out, heat up and unscrew-ing force all in one operation.  If you can cut the exposed parts of the pins right thru then you are only dealing with the seized threaded portion.

Replace with stainless ones that have a hex head rather than socket head and apply anti-seize everywhere the pins touch the alloy caliper body.

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Offline mal97

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Re: Rear brake caliper
Reply #4 on: 08 April, 2021, 10:57:19 AM
Be patient.

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Offline Hamilton

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Re: Rear brake caliper
Reply #5 on: 08 April, 2021, 02:58:22 PM
Thanks for the reply chaps , I will be able to use the workshop at work this weekend , I will try the torx bit and impact driver , if I have to go down the route of drilling where can I get replacement pins , when I looked on Fowlers parts couldn't see them listed , how would you split the caliper it looks like one piece , unfortunately patience isn't my strong point . :087:

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Offline Paul2bikes

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Re: Rear brake caliper
Reply #6 on: 08 April, 2021, 03:17:55 PM
It will come out just don't rush it. Post pics up of current state.

Pins, I'd stick with oem, they'll be easier to drill out in future.

https://www.worldoftriumph.com/collections/100058783-1-2?type=tiger-1050-from-vin-287504-to-vin-570058
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

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Offline mustangpilot

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Re: Rear brake caliper
Reply #7 on: 08 April, 2021, 04:30:58 PM
Triumph centerstand/engine guards/heated grips, GIVI PLR6404 side rack/DLM36 panniers, SR6404 top rack with M9B plate, WL901/DLM30/V47N/TRK52B topcases, ST603/602 tanklock tankbags, EVOTECH radiator&oilcooler guards, Pyramid ExtendaFenda/hugger extension, Puig touring Screen & spoiler, Zumo 396 with Zumolock holder on RAM mount, Osco chainoiler, SWMotech sidestand extension, CNC shorty clutch/ brake levers, SCPROJECT SC1-R can, Micks 25mm lowering plates, KOSO Mini3 volt/temp/time & LED blinkers

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Offline Hamilton

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Re: Rear brake caliper
Reply #8 on: 08 April, 2021, 04:42:32 PM
*Originally Posted by Paul2bikes [+]
It will come out just don't rush it. Post pics up of current state.

Pins, I'd stick with oem, they'll be easier to drill out in future.

https://www.worldoftriumph.com/collections/100058783-1-2?type=tiger-1050-from-vin-287504-to-vin-570058
Pic of the caliper .


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Offline Paul2bikes

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Re: Rear brake caliper
Reply #9 on: 08 April, 2021, 04:55:18 PM
Ok, not too bad then, I rec'n it'll be fine with a torx bit a good hard fit, then a 8oz hammer on the impact driver will be plenty. A couple of taps hopefully do it. Stay positive eh m8. :152:
Also: '16 Tiger 800, '95 Yamaha Serow, '58 Ariel FH.

 



reconstruction