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Discussion Starter #1 (Edited)
A co-worker of mine has a 2008 Victory Vision with about 1,500 miles on it.

Problem: rear brake pedal goes all the way down, and does not engage the brakes.

Dealer A solution - This is a known issue. If the bike is not ridden for 6 months, air gets into the system. Polaris is ware of this issue. The Polaris recommended solution is to bleed the brake lines.

Dealer B solution - This is a known issue with DOT 5 fluid. It needs to be maintained, or bled. (I will cut dealer B a little slack.. this came from a sales person who obviously did not know what they were talking about.. the manual clearly recommends DOT4.)

The Dealer A solution sounds fishy to me as well. Brake fluid should be good to go for two years in most situations. I did a little hunting around the Polaris parts fische, and found that there are two differences between the brakes on the 2008 model, and the 2009/2010 models. First, more color choices on the 2009/2010. More importantly, the master cylinder part number changed from the 2008 model of 1910936-385 to 1911378-385

I have not found any official recalls on this matter. If this is a "known issue" with the brakes, it sounds odd that there would not be a recall of some sort. I found some info on the Auto Recall Information for Consumers web site. Those just seem to be user complaints. The users complaint's are along the lines of what dealer A is telling my co-worker.

My thoughts are that my buddy should demand that the master cylinder be replaced under warranty as a starting point. The bike is still under warranty until December.

Have you had this issue? What did you do to fix it?
 

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I like to try the cheap and easy things first. I would bleed out the old fluid and replace it with fresh DOT4. DOT5 is for racing. Unless there are SpeedBleeders on this bike, its a two person job. If that doesn't do the trick, then I'd check the caliper seals. I'll wager he let his reservoir get too low.
 

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Discussion Starter #3
I would agree with you, if the bike was out of warranty.

Seeing that the warranty is in play, I am more concerned with getting it fixed than I am with being frugal. Fixes are on Polaris's dime until December.

I am more interested in knowing if this really is a "known problem" with 2008 machines, and what folks actually did to get it fixed. The change in part number in the fische is interesting. I own a few KTMs, and checking the fiche for changes to see which parts get updated from year to year is a common sport with customers of that manufacturer! Interestingly, Polaris did not update the part number on the master cylinder for the 2008 model.. just a new number on the 2009 and 2010. All other parts in the brake system (calipers, lines, bushings, etc) remained the same. I would have expected some sort of update notation on the part number for the 2008 model on the 2008 fische.

The only documented fixes I have found are to bled the brakes, and one case of replacing the master cylinder.
 

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Do you know if the fluids have been changed since 2008? If not, there's a lot of water in the brake and clutch systems and it should be completely purged and bled immediately. I doubt if that is covered by the warranty. I prefer to do my own work as I have little trust for others with tools in their hands, working on my stuff. I've had a repair biz for over 40 years and have seen others' work. Small wonder my customers didn't want me to retire.
 

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Discussion Starter #5
That was one of the first questions I asked. I was told "several times." I don't know when the last one was.

I understand that the fix is at least to change out the brake fluid. I change mine out every two years. The frequency of the change, as prescribed by Polaris, is what I call into question. Doesn't sound right to me.
 

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Bleed the rear brake at the right side front wheel caliper lower bleed valve (linked brakes). My '09 vision did this too, only had to do it once and it's never had any issue since.
 

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Discussion Starter #7
Shouldn't you only ever have to do that once per fluid install? Doesn't make sense that it would keep happening. I would like to think that a complete bled with new fluid would achieve the same thing.
 

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Bleed the rear brake at the right side front wheel caliper lower bleed valve (linked brakes). My '09 vision did this too, only had to do it once and it's never had any issue since.
He is correct here bleed the right front only using the center bleeder NOT the top one
 

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What I have been told is that air is drawn back into the system through a crimp fitting in the rear brake line sometimes when the bike sits for a long time. If the issue were to reoccur on mine I'd be replacing the brake line but has been solid for several years and many thousands of miles since I first had a problem-I have replaced all my hydraulic fluids a couple of times doing periodic maintenance & the bike hasn't sat for more than two weeks at a time.
 

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Discussion Starter #10
Thanks for the suggestions. I have been forwarding them to by co-worker. He is getting the back brake line replaced as suggested. Hopefully that will stop the recurrence.
 
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