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88 Yamaha Big Bear DIF yoke removal

grego86

By grego86
in Yamaha ATV Forum

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grego86 Rookie

grego86

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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?

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davefrombc Mentor

davefrombc

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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 as* 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
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