Yamaha Big Bear Rear Differential Teardown

[@toptiergarage7378]

I forgot to record putting it back together 😢Putting it back together is pretty straight forward. If you have any questions be sure to drop them down below.

[@jakehicks1130]

Just so you know that collar where the pinion bearing is held in is reverse threads. And it is a bear to get out. My rear dif was in terrible shape and full of mud so it was hard to see how somethings came apart. There is only one seal that has me stumped. It’s the one below the needle bearings. I’m going to give it my best guess and hope it’s the right direction.

[@kevinn1312]

@@jakehicks1130 thanks for the tip I got that counterclockwise cup off now there seems to be a pressed on collar to the pinion gear that holds the bearing on how do you get that off try to pulley puller and it just seems too tight

[@jakehicks1130]

I cut it off. If you cut almost all the way through then strike the cut you made with a chisel it will break. Then I ordered a new one from partzilla.

[@kevinn1312]

@@jakehicks1130 Thanks man !ordered the new on for $13 saved me the head ache!

[@39knights]

If you have access to a welder just run a couple of small beads around the inside of the bearing race you want to remove (it's trashed anyway). As the beads of welding cool they will shrink and pull the race with it. You can usually knock the bearing out with little effort after that. I use this method on pressed-in car wheel bearings all the time and it works great. That way you won't cause damage trying to cut it out.

[@haydenhudson1848]

The lat part is easy it is opposite thread spin right to unscrew left to tighten U can weld a bit of box section to it and use a pipe wrench had to do this because I tightened the crap out of it screwing it the wrong way hope this helps

[@motolove293]

Thank you for this, I gotta 86 yfm 225 and a 85 225 too and diffs look almost identical.

[@chitty3d]

Thank you for this. Did you ever get the last part disassembled? Mine is trashed and I cannot figure out hoe to remove it.

[@killer7045]

Collar is left hand thread. Righty loosey

[@im-that-guy-pal]

use a oven to get the bearing to fall out of the aluminum housings. Trust me it works

[@hereshopengarage2790]

Hey! I'm liking your content! Good job! I'll be definitely giving you a shout out on my next couple videos!! Keep up the good work👏

[@toptiergarage7378]

Thanks for the support it really means alot 😊

[@travisduckoff3669]

Not only did you not show how to do it, you did show ring gear reassembly. Stoner like uh took it apart and uh here's some stuff, and uh if doesn't go back together.

[@Landonmartin87]

How do you remove the drive shaft worm gear?

[@tommygunss4576]

The collar of the pinion gear has left handed threads. Lefty tighty, eighty looise. Use a 30mm castle socket.

[@jonathangriffin6563]

Quick question when removing the axle it comes out the left side of the diff right?

[@toptiergarage7378]

When looking at the back of the wheeler the axle comes out right side.

[@jonathangriffin6563]

@@toptiergarage7378 ok thanks for your help 👍

[@kevinn1312]

I need the next part so I can finish my rebuild too hurry up LOL

[@maxwelltwito9524]

me to i am rebuilding it and i cant get out the gear he couldn't get out. I have it ready to pull but i don't know waht to pull it with. plz help me if u know what to do

[@kyleryeager4941]

@@maxwelltwito9524 did you figure it out

[@maxwelltwito9524]

@@kyleryeager4941 yes I did. It's pretty difficult but what I did is get a punch and some liquid wrench and blow the soft punch into the gear from and angle. It comes out after that. Depends on your cenerio but after that removing the bearing is also difficult. Dry ice is also amazing

[@motolove293]

Thank you for this, I gotta 86 yfm 225 and a 85 225 too and diffs look almost identical.