Rear brake locked up !
Rank Bajin
Sun Oct 17, 2021 10:52 am
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
 
Rank Bajin
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
Sun Oct 17, 2021 10:52 am linkquote
MP3 500 sat in a temp. controlled garage for about 1 year. The emergency brake is loose - never used anyway, and the rear wheel is super tough to turn.
The brake lever is very stiff and hardly moves.
Greatly appreciate your suggestions, please.
pmatulew
Mon Oct 18, 2021 2:29 am
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 399
Location: Sayre, PA
 
pmatulew
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 399
Location: Sayre, PA
Mon Oct 18, 2021 2:29 am linkquote
The regular handlebar brake and the parking braked are separate systems. They each have a separate caliper on the back. Which one is stuck?
Rank Bajin
Mon Oct 18, 2021 9:09 am
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
 
Rank Bajin
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
Mon Oct 18, 2021 9:09 am linkquote
Hi thanks for responding, and the issue is with the regular brake lever on the handlebar.
The lever is tight against the hydraulic housing which seems strange.
pmatulew
Tue Oct 19, 2021 1:56 pm
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 399
Location: Sayre, PA
 
pmatulew
Hooked
2009 MP3 400, 2004 Honda ST1300
Joined: 11 Jun 2007
Posts: 399
Location: Sayre, PA
Tue Oct 19, 2021 1:56 pm linkquote
Well, I'd start with the pivot pin for the lever to see if that is free. Then you'll have to check if the piston in the master cylinder is moving. Would be a very rare occurrence for it to be stuck, but you never know.
Garthhh
Tue Oct 19, 2021 5:11 pm
Hooked
2020 Liberty 150, 2020 MP3-500
Joined: 06 Oct 2020
Posts: 391
Location: Reno
 
Garthhh
Hooked
2020 Liberty 150, 2020 MP3-500
Joined: 06 Oct 2020
Posts: 391
Location: Reno
Tue Oct 19, 2021 5:11 pm linkquote
Spread the brake pads with a screw driver to see if the piston is stuck in the caliper
Rank Bajin
Wed Oct 20, 2021 6:04 am
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
 
Rank Bajin
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
Wed Oct 20, 2021 6:04 am linkquote
Good ideas, thanks.

BTW Where is the master cylinder located ?
Garthhh
Wed Oct 20, 2021 8:14 am
Hooked
2020 Liberty 150, 2020 MP3-500
Joined: 06 Oct 2020
Posts: 391
Location: Reno
 
Garthhh
Hooked
2020 Liberty 150, 2020 MP3-500
Joined: 06 Oct 2020
Posts: 391
Location: Reno
Wed Oct 20, 2021 8:14 am linkquote
The mastercylinder is on the handlebar, the lever pushes the piston directly
Rank Bajin
Sun Oct 24, 2021 6:02 am
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
 
Rank Bajin
Hooked
MP3 - 500
Joined: 11 Jan 2009
Posts: 417
Location: Alabama, USA
Sun Oct 24, 2021 6:02 am linkquote
Ah!

Gotcha...Thanks
  DoubleGood Vespa Design  
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