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@hollybry avatar
UTC

Molto Verboso
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
 
Molto Verboso
@hollybry avatar
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
UTC quote
My rear brake is squealing like a banshee.
The lovely Piaggio service manual, from what I have found, really does not tell you how thick the rear pads should be, or f there are any tricks to removing them from the caliper.

Just looking at the pads, they do not appear to be any less thick than the new ones I bought. I have not taken them out of the caliper. This is just by eyeballing them

Does anyone know what the minimum thickness should be? And, if there are any tricks to removing the pads?
If the pads are within tolerance, maybe the disc and the pads are glazed. Is it okay to scuff them up with some sandpaper?
@fentonfred avatar
UTC

Addicted
2009 Piaggio MP3 250
Joined: UTC
Posts: 795
Location: Michigan; USA
 
Addicted
@fentonfred avatar
2009 Piaggio MP3 250
Joined: UTC
Posts: 795
Location: Michigan; USA
UTC quote
Have you checked both sides of the rear caliper? On mine, one side was down to the metal while the other seemed to be fine. I remember my mechanic saying that my rear brake seemed to be the same as a Harley, so maybe this pictorial will help (not from a Harley, but I'm hoping they all use similar designs).

http://www.stromtrooper.com/maintenance-how/53187-how-replace-rear-brake-pads.html
OP
@hollybry avatar
UTC

Molto Verboso
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
 
Molto Verboso
@hollybry avatar
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
UTC quote
Thanks Fenton!I had forgotten about removing the reservoir cap when pushing the piston thing back in.
And no. I didn't check both sides. I think I will just go ahead and put new pads on, but am still wondering if it is okay to scuff up thebrake disk a little to remove any possible glazing? I do it on my truck, but didn't know if it was taboo on the scoot.
OP
@hollybry avatar
UTC

Molto Verboso
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
 
Molto Verboso
@hollybry avatar
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
UTC quote
I went ahead and put on the new pads even though the existing ones were not much worn down.
Put some pad grease on the backside, maybe that was the noise?
Sprayed brake cleaner on the disc in case there was something on it.
All back together now.
@fentonfred avatar
UTC

Addicted
2009 Piaggio MP3 250
Joined: UTC
Posts: 795
Location: Michigan; USA
 
Addicted
@fentonfred avatar
2009 Piaggio MP3 250
Joined: UTC
Posts: 795
Location: Michigan; USA
UTC quote
I've noticed mine squealing when there is alot of morning dew, or after riding in the rain. I think the sand gets washed up on the rotors, and I usually have to spray them off.
OP
@hollybry avatar
UTC

Molto Verboso
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
 
Molto Verboso
@hollybry avatar
2007 Piaggio MP3 250 (sold) and 2009 MP3 400 (sold) 2011 CanAm Spyder RSS
Joined: UTC
Posts: 1843
Location: Floyds Knobs IN
UTC quote
Mine squealed every time the brake was applied.
Hopefully, with me giving the disc a good cleaning, adding the grease to the pad plates, and the new pads, it will be all quiet now.
If it isn't raining all day tomorrow, I will be giving the new rear tire and brakes a long test!
@ramblerdan avatar
UTC

Ossessionato
2009 MP3 400
Joined: UTC
Posts: 2008
Location: Saratoga, N.Y.
 
Ossessionato
@ramblerdan avatar
2009 MP3 400
Joined: UTC
Posts: 2008
Location: Saratoga, N.Y.
UTC quote
For the 400, the minimum thickness for the rear pads is listed as 1.5 mm.
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