Bleeding Brakes - Polaris ATV Forum
ATV Brakes & Suspension Have a question about your brakes? Need some suspension advice? Try this section for answers

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 02-17-2013, 02:38 PM Thread Starter
Junior Member
 
foxden's Avatar
 
Join Date: Feb 2011
Location: Texas
Posts: 4
Bleeding Brakes

Having a problem bleeding the front and mid brakes on my 93 Big boss 6X6. I have cleaned all the lines, replaced the pads and installed a NEW master cylinder. I have tried the traditional method of pumping the master and bleeding each caliper, used a mity vac and also dropped a line into a bottle of brake fluid while using the traditional method, but still cannot get any pressure. I have the machine on blocks so I can rotate the tires.While turning the front tires I can apply the brake, but it goes all the way to the handlebar, but the brakes do stop the tires. I just cannot figure out why I don't have more brake pressure on the Master Cylinder. The right side,Rear brake works fine. Any thoughts and/or advise would be greatly appreciated. I'm lost on this one. I have been reading here and other places that bleeding the brakes on these machines can really be a problem
Thanks in advance.
foxden is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 02-17-2013, 08:16 PM
Polaris ATV Legend
 
Bruce!'s Avatar
 
Join Date: Feb 2009
Location: Port Angeles WA
Posts: 20,004
Welcome to the board!
Bruce! is offline  
post #3 of 7 (permalink) Old 02-18-2013, 06:15 PM
Junior Member
 
Trailblazer2004's Avatar
 
Join Date: Feb 2013
Location: Inverness fl
Posts: 1
I have the same problem help
Trailblazer2004 is offline  
Sponsored Links
Advertisement
 
post #4 of 7 (permalink) Old 02-18-2013, 06:21 PM
Polaris ATV Junkie!
 
fishhooker's Avatar
 
Join Date: Feb 2012
Location: Colorado
Posts: 806
I've had to reverse bleed sometimes if its air-locked. I've not had to do that to any Polaris units, but vehicles and other brands of atvs.

"Big Bad Wolf" 2004 Sportsman 700 EFI, Mine
"Lil' Red" 1999 Sportsman 335, The Wife's Ride
fishhooker is offline  
post #5 of 7 (permalink) Old 02-23-2013, 03:57 AM
Polaris ATV Legend
 
Russ C's Avatar
 
Join Date: Feb 2011
Location: Douglas Wyo
Posts: 4,243
Try leaving lid off of master cylider while you bleed.
Russ C is offline  
post #6 of 7 (permalink) Old 02-23-2013, 07:54 AM
Extreme ATV Enthusiast
 
Muggzy's Avatar
 
Join Date: Jan 2012
Location: Orange Co., NY
Posts: 223
On my '01 sportsman, there's an adjustment at the calipers to compensate for pad wear/caliper travel. Your caliper may be running out of travel.

Sent from my SCH-I535 using Tapatalk 2

'01 Polaris Sportsman 500 HO project (needs a 'lil TLC. OK, OK, a LOT of TLC)
My first 4WD ATV!

1" wheel spacers, 25" STI Black Diamond Tires, Front and rear storage with seat.

My other ride is a 2-stroke sport quad.
Muggzy is offline  
post #7 of 7 (permalink) Old 09-12-2014, 11:44 PM
Junior Member
 
tigers2007's Avatar
 
Join Date: Sep 2014
Location: Michigan
Posts: 1
I hate to wake a sleeping bear but I have a '89 Big Boss 4x6 and I have the exact same issue. I got it used very cheap and has only 50 miles on it (was at a state park for 25yrs and was never used...). I had to blow crud out of all of the lines as they were clogged. Had to buy two new master cylinders (each handle) as they were both destroyed beyond economical repair. New pair of CHICOM MC's cost me $70 from eBay. Right side (rear) works excellent and has good pressure. The left side (fronts and gearbox brake) are very very weak with the handle pulled all the way back. With it up on a jack you can spin the front tires and squeezing the brake handle it will stop but I can still turn the tires with my hands. The gearbox caliper/brake isn't strong enough to stop the force of the new belt with the weak pressure. I have tried a MityVac to suck new fluid in. I have even replace the left MC with a different brand new unit. I even installed the old unit that I rigged back up -- no matter what, it has very weak hydraulic pressure. Air in the four-way manifold? Any good tricks? I though I read here that I should unhook the calipers and squeeze the pistons out farther, compress them then re-install and then test the brakes.
tigers2007 is offline  
Reply

  Lower Navigation
Go Back   Polaris ATV Forum > Polaris ATV Technical Discussions > ATV Brakes & Suspension

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Polaris ATV Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Correct procedure for bleeding ALL the brakes prickle Polaris Sportsman 7 01-09-2013 12:42 PM
Bleeding Brakes foxden ATV Brakes & Suspension 3 12-28-2012 04:06 AM
Bleeding Brakes Question smc9696 Polaris Magnum 3 09-22-2010 07:48 AM
bleeding brakes on scrambler w/broken master cycl. 425whpsti ATV Repair and Maintenance 2 07-15-2010 10:00 PM
brake bleeding xpedition 425 schmity ATV Brakes & Suspension 3 03-25-2010 01:17 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome