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Rear brakes

This is a discussion on Rear brakes within the X2/X4 Transmission & Drivetrain forums, part of the Yamaha Wolverine X2 & X4 847cc SxS category; I believe jacking the center rear center should allow you to spin the wheels. If there is drag you should feel and/or hear it doing ...

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Thread: Rear brakes

  1. #11
    Rocket
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    I believe jacking the center rear center should allow you to spin the wheels. If there is drag you should feel and/or hear it doing so. The odd chirp may be from grit on the rotor which I hear on mine. They turn fine when jacked up. Same with the front but you don't have the wear there. Long shot is the front is not braking at all and only the rear is doing all the work. I doubt its proportioned anyway even on the x2. But this is an easy check to do IMO.
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  2. #12
    Mountaineer 19Wherry's Avatar
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    Thanks for all the info. And yes this could be my top speed issue as well. Just will have to test again. Once I get the new pads in tomorrow I’m going to run it with all 4 wheels off the ground and check the braking. both innner and outer pads were gone more so the inner.
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  3. #13
    Mountaineer 19Wherry's Avatar
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  5. #14
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    Wherry, I know you've been having problems posting YT links and your videos are good, with one exception: could you please turn your phone sideways, otherwise this is what we see:

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    Thanks.
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  6. #15
    Mountaineer 19Wherry's Avatar
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    Quote Originally Posted by MassiveOverkill View Post
    Wherry, I know you've been having problems posting YT links and your videos are good, with one exception: could you please turn your phone sideways, otherwise this is what we see:

    Name:  WherryVerticle.jpg
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    Thanks.
    Yes, I will do that. Sorry. Learning curve.
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  7. #16
    Mountaineer 19Wherry's Avatar
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    I will need to check my brake pedal play as well. This is the section in the manual. If not adjusted right it can drag.

    - no progressive valving
    - e brake is a separate caliper and rotor it does not share the 4 wheel hydraulic brakes
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    Last edited by 19Wherry; 06-04-2019 at 06:24 PM.

  8. #17
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    Maybe the pads are binding up on that mounting bracket and the two pins? Odd it's on both sides in the rear though...?
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  9. #18
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    Quote Originally Posted by 19Wherry View Post
    Not worried about the brake pads. Plus I don’t want to go back to the dealer again. Just got done fixing all the stuff they messed up. More worried on why the they would be dragging. Only thing I can think of is the resivor was full all the way to the top. They heated up, expanded and caused it to drag.
    Yeah if it DIDN’T leak out and your reservoir was completely full then it would expand once heated up and apply pressure to your caliper piston causing the drag. Sounds like when your dealer did your warranty work awhile back they topped off your reservoir for you. Did you a solid. The did such awesome work for you before I remember reading about. I think your are the first to have this problem. My vote is the overfilled reservoir. If it would have leaked out you would have been ok.


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  10. #19
    Super Moderator MassiveOverkill's Avatar
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    Just to give perspective: I'm about to break 6K miles and I am still on my original parking brake and disc brake pads. My parking brake caliper when I inspected it had black molybdenum high temp grease lubricating the sliders (the ones with the boots). Some that are having brake problems are discovering completely dry sliders.
    2018 Blue Wolverine X4
    First Wolverine X4 to break the 60 MPH barrier
    Over 6000 miles and 425 hours
    Hunterworks prototype sheave with easy cleanout port, 22 gram HV weights
    Weller Racing ECU flash
    HMF Titan Series Quiet slip-on Exhaust
    Walker Evans shocks
    Swiss-cheesed airbox lid
    NGK Laser Iridium spark plugs
    Tinkseal additives
    STI HD beadlocks wearing Tusk Terrabite 27x9x12 tires
    OEM windshield, soft cab, and roof
    OEM skid plates
    OEM rock sliders
    OEM A-arm guards
    OEM cargo box
    Check out the Yamaha X2/X4 FB group: https://www.facebook.com/groups/WolverineX2X4/

  11. #20
    Mountaineer 19Wherry's Avatar
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    Yea if you got 6k out of yours something was up. If it is not the brake pedal adjustment then I’m leaning towards the over filling of the brake reservoir.

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