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Rear brake master cylinder

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Well, guess it's time to rebuild the rear master. Not able to keep pressure up on the system. At first thought it was an air bubble, so bled it out and seemed to be fine. Nice solid pedal. Went for a ride yesterday and it slowly started losing pressure again. Pretty good for 40 years worth. Kit ordered.
 
Mine was passed rebuild... I had good luck adapting an EX300 one. :)
 
Hey Bill!

You gonna post pics?

Glad you're keeping well.

Ed
 
GSXR7ED said:
Hey Bill!

You gonna post pics?

Glad you're keeping well.

Ed
Click to expand...

Hey Mr Ed I had to get the Suzi out and ride it, felt good except for the rear brake. Beth took the Spyder. She said she could hear the bike any time I jumped on the throttle. Ride felt good, knee didn't complain either lol. Uh you get started yet lol. Guess I could post a pic or two.
 
mrbill5491 said:
Hey Mr Ed I had to get the Suzi out and ride it, felt good except for the rear brake. Beth took the Spyder. She said she could hear the bike any time I jumped on the throttle. Ride felt good, knee didn't complain either lol. Uh you get started yet lol. Guess I could post a pic or two.
Click to expand...

MrBill,

I still remember our adventure rides through southern NM...good memories!

Loud pipes...eh? They save lives you know...lol.

Yeah, post pics when you can.

Yes, I will be starting soon...been kicking the tires on my "T" and looking at the work that lays ahead.

Glad your knees are holding up. My knees are strong enough to move and hold my bike. I have parts scattered in several boxes in the garage and attic.

See you around.

Ed

*****
 
GSXR7ED said:
MrBill,

I still remember our adventure rides through southern NM...good memories!

Loud pipes...eh? They save lives you know...lol.

Yeah, post pics when you can.

Yes, I will be starting soon...been kicking the tires on my "T" and looking at the work that lays ahead.

Glad your knees are holding up. My knees are strong enough to move and hold my bike. I have parts scattered in several boxes in the garage and attic.

See you around.

Ed

*****
Click to expand...

Lol, I'm wanting to change the exhaust on the Spyder, wifey says no. But but honey it would sound so cool...Hmmm maybe I can surprise her when she goes off for her 6 week training? Heheheh.
 
Stainless steel re-sleeving is an option,If the bore is out of round or worn.I have seen ads in the magazine Classic Motorcycle Mechanics for the service to brake master cylinders,Calipers.They service Motorcycles,Cars,and Commercial vehicles.Mostly for restoration purposes.I don't know of any in the U.S. The company in the UK is Past Parts Unlimited. restore@pastparts.co.uk My browser couldn't connect ??? I have considered this service when parts were either not available and discontinued as a lot of our older bikes fall into this category.Down side all I have is an address TEL.# and FAX # So somebody out there is doing it in the U.S. if there is a market for it.Surely. I have subscribed for a few years at www.classicmechanics.com
 
Last edited:
Well, got started on my rear master rebuild. Took it apart last night and was pleasantly surprise. It was fairly clean inside, cylinder itself was fine, no scratches or anything. The rubber pistons show some wear but hell, what'cha expect for 40 years old.

DSCN1239.jpg
 
That's not bad looking at all, Bill.

Compared to my front MC rebuild...anyway.

Thanks for posting pic.

Ed

****
 
Did a comparison last night between the old parts and new stuff for the rear master. Old stuff slid back and forth without hardly any resistance. New stuff, you could feel the difference, the rubber parts sealed up nicely.
 
GSXR7ED said:
That's not bad looking at all, Bill.

Compared to my front MC rebuild...anyway.

Thanks for posting pic.

Ed

****
Click to expand...

I may just do the front MC as well just for chits and giggles. It does have 40 years of wear on it. Some preventive maintenance.
 
mrbill5491 said:
Well, got started on my rear master rebuild. Took it apart last night and was pleasantly surprise. It was fairly clean inside, cylinder itself was fine, no scratches or anything. The rubber pistons show some wear but hell, what'cha expect for 40 years old.

View attachment 60347
Click to expand...

where did you buy your rear master kit? OEM or aftermarket. Thanks for your time
andrew R
 
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