Thanx...Anita
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Master cylinder rebuild?
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Krooozn
Master cylinder rebuild?
Can anyone tell me how hard it would be ro rebuild a master cylinder on a 1981 GS450/L? Mine needs to either be rebuilt or replaced....the plunger thing is stuck in the "in" position and I can't get it to move....so therefore when you apply pressure to the handle to engage the front brake, the handle just kind of flops around....with no restriction and the caliper doesn't engage....
Thanx...AnitaTags: None
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rkubik
Overall not very hard to do if you want to stay true to vintage, but does take lots of time. Get a newer single-disc one from eBay.
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It's not that hard, but it sounds like you may have a difficult time getting the piston out of your cylinder first.
When you get it out, you will have to clean the bore so it won't tear up the new seal that comes in the rebuild kit.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35588
- Torrance, CA
Before ordering a master cylinder rebuild kit I suggest you remove the piston from the master and inspect the bore surface of the aluminum for corrosion pitting (use a flashlight or strong light of some sort). If the master is pitted, it's junk and can not be rebuilt.
Good luckEd
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
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coolksprt
It really wasn't all that hard. It was one of the first things I did on my own when I started to go through preventive maintence. If in doubt, post a pic and we'll see what's going on! Brakes aren't something to second guess about.
The bore should look something like this.
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