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Hooked
2008 MP3 400
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Location: Kitchener, Ontario
 
Hooked
2008 MP3 400
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UTC quote
So I got the front end of my 500 apart and the reservoir for the PO4 brake fluid is visible. I took off the lid and noticed a rubber seal inside. Do you have to remove the rubber seal to pour in the fluid?
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Hooked
mp3 500 sport
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Hooked
mp3 500 sport
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You will have to lift the seal off slowly is it black then top up using brake fluid don't use any other oil or it will bugger you brakes up just take your time
@madison_sully avatar
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MP3 500, GTS 250 (both 2008 MY), 2013 Piaggio BV 350, 2014 Can Am Spyder RT
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@madison_sully avatar
MP3 500, GTS 250 (both 2008 MY), 2013 Piaggio BV 350, 2014 Can Am Spyder RT
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UTC quote
novak0797 wrote:
You will have to lift the seal off slowly is it black then top up using brake fluid don't use any other oil or it will bugger you brakes up just take your time
How would it bugger the brakes up? It's the tilt lock system....
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mp3 500 sport
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mp3 500 sport
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I thought he was on about brake fluid topping up not tilt lock system
@71brent avatar
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2016 MP3 500 Sport ABS
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@71brent avatar
2016 MP3 500 Sport ABS
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UTC quote
novak0797 wrote:
I thought he was on about brake fluid topping up not tilt lock system
The title of his post is Refilling the tilt fluid? Seems pretty obvious to me what he was talking about.
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2009 MP3/250, 2012 GTS Super 300ie
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@klaborde avatar
2009 MP3/250, 2012 GTS Super 300ie
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Location: Marietta, GA
UTC quote
Re: Refilling the tilt fluid?
DennisL wrote:
So I got the front end of my 500 apart and the reservoir for the PO4 brake fluid is visible. I took off the lid and noticed a rubber seal inside. Do you have to remove the rubber seal to pour in the fluid?
I use a Ketchup / Mustard bottle with the pointy tip to refill my fluids.
If your not getting the Alarm on your Tilt-Lock, I would just Refill.
If the Dot-4 Color is Dark, I think I would do a Flush and Fill.

Keith,
Marietta, GA
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Hooked
2008 MP3 400
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UTC quote
Ok, so use a pair of needle nose pliers to carefully lift off the black rubber seal, then check the fluid color. If it's black then it will need a flush. If not, then use DOT4 Brake fluid, which I was under the impression from another thread regarding the tilt lock, would work, and use a Ketchup/Mustard type bottle to fill the reservoir.

Thanks for the info btw.
@madison_sully avatar
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@madison_sully avatar
MP3 500, GTS 250 (both 2008 MY), 2013 Piaggio BV 350, 2014 Can Am Spyder RT
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UTC quote
Yes, use DOT4.

If the fluid is not transparent it's time to change it.
So if it's milky, brown, basically if you can tell it's not new.
Black, well, there's something wrong if it's black.

I don't recall using needle nose pliers to lift the seal/expansion thingy.
Just depends on what you're willing to get on your fingers I guess.

If you just need to fill the reservoir, you can use any little bottle.
To bleed though, I use a large syringe and a section of tube to fit to the wheel level clamping units and pressure bleed from the bottom.
So empty the reservoir first, then push fluid up to fill it.
@klaborde avatar
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2009 MP3/250, 2012 GTS Super 300ie
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@klaborde avatar
2009 MP3/250, 2012 GTS Super 300ie
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UTC quote
Madison Sully wrote:
Yes, use DOT4.

If the fluid is not transparent it's time to change it.
So if it's milky, brown, basically if you can tell it's not new.
Black, well, there's something wrong if it's black.

I don't recall using needle nose pliers to lift the seal/expansion thingy.
Just depends on what you're willing to get on your fingers I guess.

If you just need to fill the reservoir, you can use any little bottle.
To bleed though, I use a large syringe and a section of tube to fit to the wheel level clamping units and pressure bleed from the bottom.
So empty the reservoir first, then push fluid up to fill it.
My Observation over a number of years owning multiple MP3's...
All the Fluids need to get Flushed every two years.
I have never seen the DOT-4 look good after that time.
It absorbs water, and Heat Breakdown.

In another thread, I found speed-bleeders which makes life easier for brakes.
I have a set ready for the MP3/500 Sport, but have not done mine yet.
Probably this winter.

Keith
Marietta, GA
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2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
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@web-tech avatar
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UTC quote
"All the Fluids need to get Flushed every two years."

This is true with brake fluid for every vehicle manufactured today.

IMHO, part of yearly safety inspection on vehicles should be to show proof your brake fluid was flushed in the past 24 months.
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UTC quote
Madison Sully wrote:
Yes, use DOT4.

If the fluid is not transparent it's time to change it.
So if it's milky, brown, basically if you can tell it's not new.
Black, well, there's something wrong if it's black.

I don't recall using needle nose pliers to lift the seal/expansion thingy.
Just depends on what you're willing to get on your fingers I guess.

If you just need to fill the reservoir, you can use any little bottle.
To bleed though, I use a large syringe and a section of tube to fit to the wheel level clamping units and pressure bleed from the bottom.
So empty the reservoir first, then push fluid up to fill it.
Or if you have a compressed air driven brake bleeder just hook it up to a bleeder, open it, and keep the reservoir topped off until clear fluid comes out of the bleeder. Worked for me!
@wolrefnif avatar
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MP3-250ie, Vespa GT200L
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@wolrefnif avatar
MP3-250ie, Vespa GT200L
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Location: PA
UTC quote
Quote:
Ok, so use a pair of needle nose pliers to carefully lift off the black rubber seal, ...
Dennis (and anyone who may read this later - Needle nose pliers should be avoided. It is not that hard in the tank and tearing the membrane is a good way to turn a 15 minute task into a bad day. (Most times it sticks to the caps)

If you are new to MP3s (and I count myself new at only 2 years), this is easily done by you. The biggest task is figuring out how to get the plastics off and once you have done it a couple of times, it takes mere minutes.

Two videos that helped me
www.youtube.com/watch?v=N3tpZ4N-UXw
www.youtube.com/watch?v=KpitZRTj-pg



Cheers.
OP
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Hooked
2008 MP3 400
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Location: Kitchener, Ontario
 
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Location: Kitchener, Ontario
UTC quote
Just an update

I had to get the bike into the dealer for new tires anyways, so I just asked him to check out the horn warning re the tilt fluid level.

Turns out the Master cylinder, MP3 steering lock hydraulic pump was leaking and needed to be replaced.

So problem solved but again, thanks for all the advice.
@klaborde avatar
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2009 MP3/250, 2012 GTS Super 300ie
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Location: Marietta, GA
 
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@klaborde avatar
2009 MP3/250, 2012 GTS Super 300ie
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Posts: 4308
Location: Marietta, GA
UTC quote
DennisL wrote:
Just an update

I had to get the bike into the dealer for new tires anyways, so I just asked him to check out the horn warning re the tilt fluid level.

Turns out the Master cylinder, MP3 steering lock hydraulic pump was leaking and needed to be replaced.

So problem solved but again, thanks for all the advice.
That Happens...
If you don't follow the Maintenance Intervals, the leaking will get you before the Fluid Change. aka Master Cylinder or Sensor.

Keith,
Marietta, GA
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