Quantcast
Jump to content

  • Join Today, It's Simple and FREE!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

grego86

88 Yamaha Big Bear DIF yoke removal

Recommended Posts

My front dif is leaking oil pretty bad around the yoke. I completely pulled the whole dif from my bike and now stuck trying to get the yoke unbolted from the dif body. There's a large nut in the center of the yoke and I've tried using impact wrench and not budging. The nut and bolt kind of looks like it has a crimp spot made to keep it from backing off the bolt I guess. Does that sound right? What's the easiest way to remove it? Just soak with some type of lube and try again with the impact?

Share this post


Link to post
Share on other sites


That  is  just a   self locking  nut. I  can't tell whether someone  has  used a punch on it  to   lock it tighter  or  not  with the crud  in the  thread above it, but  it  should  come  undone  using an  impact  wrench.  Clean  the   thread above the dent in the   nut  to ass if the thread of the shaft is damaged..  If it  is, you  could  grind away the  damaged  spot  under  the  dent, but  you  likely  don't  need to grind anything away. also , when you  clean  the   shaft to  get a better  look,  make sure it is   regular right hand thread. It  appears to be  from  what  little I can see of it , but make  sure.

Use a big  pipe wrench to  keep the  yoke from  turning,  and use a  good  air or electric impact wrench to spin the nut off..

Edited by davefrombc

Share this post


Link to post
Share on other sites

Someone locally told me it prob has a punch out in it. Does anyone know if my model does or not?

Share this post


Link to post
Share on other sites

I doubt the  nut  has a spring pin  holding it ..   Clean  it  off and look. If there's a hole drilled  through it, it  has one , but that  nut  looks  like a regular  self  locker to me.

Share this post


Link to post
Share on other sites


Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Forum Topics

    • By HeWasRidinDirty
      Hello all. I got this yzf for almost nothing. It's in pretty good shape. However, it's pretty stubborn on cold start-up. I noticed while cranking it over that there was water dripping from what appeared to be the exhaust where the pipe bolts on. It did fire up and I could smell coolant in the exhaust. The P.O has installed a toggle switch for the cooling fan. I'm thinking that maybe it overheated and cracked the head or something? Any tips/ advice is much appreciated. 

       
    • By Frank Angerano
      Take a look at this. I just ordered it. Wondering what your thoughts are ? I mainly like to get my bikes up In the air so I’m not killing my back any more.  I either build up some stuff I have laying around etc but this looks like it’s going to work out well.  
      Goplus 300lb Motorcycle Lift Table Hydraulic Cycle Dirt Bike ATV Scissor Jack Lift Hoist Center Stand Lift https://www.amazon.com/dp/B01BRBKA82/ref=cm_sw_r_cp_api_i_Kx5wCbPR1HRPA
    • By Hilltopmike
      Hi Folks,
      Just bought this 1991 King Quad and it is missing the right front axle.  It runs and drives in 2 wd, would be nice to find parts or whole axle to make the 4 wd drive work again.  A rebuildable  axle would be fine.  Any help would be great.  
      Thanks Hilltopmike

    • By anryu451
      Rescued this thing from sitting in a warehouse the last two decades. Finally got it to fire, but when I put it into neutral to do so its now stuck in neutral, and wont shift no matter how much pushing, rocking, etc. Even with throttle it wont. Range lever on left side will go from H to L, but not to R, and this makes no difference on it being stuck in neutral.

      Any suggestions?
    • By Frank Angerano
      So here’s a question. I have seen a few members that have recently purchased a used bike.   Also a HUGE amount of so called new members who have purchased a used bike and have come here “just here for a manual”.
      Some have been disappointed with the bikes and or knew they were getting a broken bike with some mechanical  experience thinking hey I can fix it.   So here’s my take on buying a used bike. Anyone who has followed some of mine and other members posts about what to look for when buying a used bike here’s a few pointers on what to look for. 
      1. I always check the oil and look for moisture, metal shavings and color. 
      2. Feel the compression or take a compression tester with you. 
      3. Check for spark (if the bikes not running)
      4. Take a small jumper pack to verify that the starter cycle works and the bike cranks.
      5. Look for bent or cracked frame/welding that was done on the frame from maybe a wreck.
      5. Mismatch plastics by looking under neath.  
      7. Bolts on the engine/frame that look like they are stripped from someone taking the bike apart. 
      8. Any kind of scilicone or gasket adhesive that was used on a cover plate or engine seem where the engine was taken apart.  
      9. Patches on the exhaust pipes with sheet metal or jb weld patch material.  
      10. Wiring messes on the harness like bundles of tape where the harness was opened up and taped up  for an after market device or just plain butchered up.  
      11. Put the bike in gear (running or not) and roll the bike back and forth to see that the gears work and you feel resistance like the engine is trying to spin while pushing it forward as if you were push starting it   
      12. I keep a vin# decoder website on my phone as a favorite to double check the year of the bike .
      All though nothing is fool proof these tips will help you along while buying a used bike. Not only that but  it will help you negotiate a fair price for a bike that may have one of the above problems.  
      I have minimized this entire process down to about 15 mins. I buy all the time so I don’t expect you to do the same or have a compression tester etc but use some of these tips when buying and go into the purchase with confidence! 
      I would like to hear anyone else that has any input on buying a bike and what to  look for! 
       
  • Similar Tagged Content

  • Recently Browsing   0 members

    No registered users viewing this page.


×