Sorry no help on part #. Just make sure they clean out the entire rear system.

 

Maximum_Dave ....i've not personally rebuilt the Legends/Phat master but have rebuilt many many single stage master cylinders over the years.

I suspect that your MC is a 3/4" bore and that the rubber parts can be taken from a rebuild kit or kits for another 3/4" bore MC such as Wagner or Bendix manufacturer.

All you need are the primary and secondary cups. Here's an example of the parts of different designs. Solid or 'o' ring cups

• Master Cylinder Rebuild Kit | eBay

good luck

 

I think the cause is that DOT 4 and DOT 5 brake fluid was mixed at last tune up and it has gummed up the works and degraded some of the seals.

oh jeesh.... I didnt even know there was a difference in brake fluids...

I just got "motorcycle" break fluid...

Maxium, a lot of us have the elite forward controls (myself included). Please make sure you post up here onto this thread what you learn and how you resolve this, as I'm sure it will be applicable to many. As always, Pictures are appreciated.

 

Short answer luv _ only use Dot 4

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only use Dot 4

GO IT !! (going to check my supply cabinet...)

PS - whats the long answer? Id like to know why there are different "break fluids" ...and why one is toxic to another.

 

Brake fluid is designed to resist compression. However, it has two weaknesses (well 3 if you count eating paint) - it is hygroscopic which means it readily absorbs moisture from the atmosphere, and it degrades over time.

DOT 3 used to be the standard, but DOT 4 has replaced it. DOT 4 is more resistant to compression -which means it applies more force (to the caliper) and it degrades less over time. DOT 4 also is compatible (it will mix) with DOT 3 fluid. Therefore you can put DOT 4 fluid in a DOT 3 vehicle with no harmful side effects - it is in fact an upgrade. You cannot however, put DOT 3 fluid in a DOT 4 vehicle -not that you would want to.

DOT 5 is a different beast though. It is based on a completely different type of fluid (maybe silicone based?) and cannot be mixed with any other type. As well, DOT 4 or 3 vehicles don't have the type of seals required for DOT 5. Most brand new vehicles use DOT 5 now. The cap on your car master cylinder will tell you which one to use.

If in fact they put DOT 5 in the OPs bike, he could be screwed. He may have to replace the lines and seals.

A good rule of thumb is to replace all your brake fluid about every two years. It's not the mileage that matters, but the time it takes to degrade. Some guys recommend annually but that's a little extreme.

Ok, there's the long version. It's was off,the top of my head, so don't shoot the messenger if I got a detail wrong, but I think that it's pretty much right

 

Ok, there's the long version...

Thanks LD... add bit of info to my mental tool box.