replace master cylinder rear axle

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Apr 18, 2017 | 11:01 PM

ThatOneGirlKat

Thread Starter

Stage III

Joined: Apr 2017

Posts: 3

Likes: 0

From: Illinois

replace master cylinder rear axle

My dad is looking to replace the master cylinder rear axle on his 2005 Harley sportster 1200c but we had trouble finding tutorials/guides/videos online showing how to do it for that motorcycle specifically.

If anyone knows or can share any good videos/step-by-step instructions on how to do it to help my dad out would be great!

Apr 18, 2017 | 11:19 PM

Iarecobra

Road Master

Joined: Apr 2014

Posts: 841

Likes: 58

From: Yakima

Never heard of a master cylinder rear axle

Apr 18, 2017 | 11:30 PM

ThatOneGirlKat

Thread Starter

Stage III

Joined: Apr 2017

Posts: 3

Likes: 0

From: Illinois

Ah, my dad must've said it to me wrong then? He did just come home from work so he was probably a bit tired. That's probably why I wasn't getting that many results when I looked it up. I'll try looking it up again. Thanks!

Apr 19, 2017 | 05:40 AM

cvaria

Seasoned HDF Member

Joined: Sep 2012

Posts: 12,367

Likes: 2,215

From: Tallahassee, Florida

Quote:

Originally Posted by ThatOneGirlKat

it just unbolts. Its in the service manual. It's the rear master cylinder. It sits behind the engine under the swingarm in a 2005. Follow the hose coming from the rear fluid reservoir.

you guys go find a service manual when you can

Last edited by cvaria; Apr 19, 2017 at 05:56 AM.

Apr 19, 2017 | 06:12 AM

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

Likes: 2,898

From: Bedford UK

Hi from the UK and welcome to HDF. Between us we can help, so clarify what your dad is up to. Tell him the factory service manual is great for working on his bike and answers many questions, available from his local friendly dealer. Avoid the cheap aftermarket books.

Apr 19, 2017 | 08:12 AM

ThatOneGirlKat

Thread Starter

Stage III

Joined: Apr 2017

Posts: 3

Likes: 0

From: Illinois

Thanks!! My dad bought his Harley used from the previous owner so I'm not sure if he has the service manual or not. I'll tell him about the service manual though and where he should get one if he doesn't have one. I'm not exactly sure what he is doing to the bike but I'll update that later when I can get ahold of him!

Apr 19, 2017 | 09:18 AM

TStephen

Road Warrior

Joined: Mar 2016

Posts: 1,713

Likes: 299

From: SC

Quote:

Originally Posted by Iarecobra

Never heard of a master cylinder rear axle

Sure you have, it's right behind the master cylinder front axle.

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Apr 19, 2017 | 06:28 PM

HarleyScuba

Grand HDF Member

Joined: Jul 2007

Posts: 4,007

Likes: 126

From: Manassas, VA

Quote:

Originally Posted by cvaria

it just unbolts. Its in the service manual. It's the rear master cylinder. It sits behind the engine under the swingarm in a 2005. Follow the hose coming from the rear fluid reservoir.

My 2005 Sportster uses DOT 5 brake fluid. Check the writing on the fluid's reservoir cap. It will say what type of brake fluid to use. DO NOT mix DOT 4 with DOT 5.
Master cylinder re-build kits are available, and less than 30 bucks, IIRC. It helps to have a bench vise for the re-build operation. The re-build kit will come with instructions. Might as well do the brake pads, too, while you have the system open. Clean the caliper's piston, with brake cleaner and a shoe string (with a back-and-forth, shoe-polish motion), before pushing the piston back into the caliper.