bearing removal

3 replies to this topic
  • stlyamadude

Posted February 22, 2012 - 05:48 PM


just got my new susp bearings and started the task today...all came out fine but the connecting rod bearing the heck do i get these out??? ok just so u all no what im talking about....lowest mount on frame to swing arm link...has the long sleeve...ok so anyway....i pressed out all the others with ease with my bench vise but when i put in the connecting rod to push out the bearings it would not i pulled it out and looked closer....ya it appears that the piece is machined inside so that when the new bearings are pushed in the ther is a spacer in between the 2 bearings but i dont think it is...i think it is a solid i removed the needles and started to use a punch at an angle with no forward i tried pb but probly wont do much since they are press fit...tried little heat but i am afraid of to much since the piece is alum....dont waanna warp or deform it....i tried beating it for awhile but have got no where....looked at some bearing pullers and what not but they are quite pricey...this is really got me the hell do i get these out???ive tried punches,screw drivers and well???? dont have much else to use since the cages are like only a 1/16 bigger thanthe center sleeve....i dont want to mess up the machined part of the ......ya u no what i marks and or scars i can prob just use a brake hone on but i dont want to mess it up please help...and 08 450 not that it probly matters..stock linkage...stock bearings...

  • motodiver13

Posted February 23, 2012 - 09:13 AM


Try the homemade bearing removal tool.

Long piece of 3/8 allthread.
some nuts for above and washers.
Use 2 sockets on one end a socket that is just bigger than bearing OD on the other end one just a hair smaller than bearing OD.
Toghten bolts to pull race through.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted February 23, 2012 - 09:39 AM


That won't work on the link he's having trouble with because there's a step in the bearing bore between the bearings. You could make a puller by the means described above, but there would need to be a variation:

The washer that does the pulling will need to have two sides trimmed flat so it can be turned sideways and pass through the bearing on one side. Then it needs to be cut down on the remaining round edges so that it can fit in the center portion of the bore and lay flat against the inside edge of one bearing. At that point, you can set up the socket, etc., and pull the bearing out.

Alternatively, a proper blind bearing puller is the real, correct tool.

Another way is to place the link in a temperature controlled oven at 275 ℉ for 25-30 minutes. Use an oven thermometer unless you trust the oven. Remove the part using gloves and drive the bearing out from the inside.

For the bold and very experienced mechanic, the bearing can be "shrunk" with an acetylene torch. This method is obviously risky, but effective. It requires a #1 or #0 welding tip. The link should be wrapped in a wet cloth to help keep it cool. With the needles removed, the inside surface of the bearing race is then heated in one spot 7-8 mm wide all along its length as quickly as possible to a bright red, and then torch removed as soon as that's done. Let the race cool, and you should find it much looser than it was. Done right, the natural thermal barrier between the two parts will slow the heat transfer, and the dissipative nature of the aluminum will prevent any localized damage. The key is to heat the race red within 15 seconds or less.

  • motodiver13

Posted February 23, 2012 - 11:23 AM


Thanks for the clerification Grey. I removed one from a '98 and don't think it had the step in it. have a 2008 now so Ill keep that in mind. But I also have the blind bearing remover Harbor Freight i think about $60.

Related Content

WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Should I buy this bike? help....... by Numsa Hul

Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Megabomb Fitment by 288yz450

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.