Changing bearing on clutch side jack shaft.

Tuesday · May 6, 2012

I took out the jackshaft and see that the bearing is pressed into a collar. Just use a press to take the bearing out?

Also dont see an easy way to change the bearing in the top of the chain case that goes to the jackshaft. Its soaked in oil so I am not to worried about. You an feel minor drag on it but the ball bearings are quite large. To change that seal and bearing looking like you would need to pull the motor?

Not really looking foward to putting everything back together.

Sleds R Fun · May 6, 2012

Add a little heat also! To install put bearing in freezer and heat collar. Chain case bearing will be fine!

Extreme-One · May 7, 2012

If I remember correctly the bearing behind the secondary on the shaft has a spanner nut behind the bearing, use a shock spring adjustment wrench and spin it off. Once off you can get the bearing out. Yamaha has a specialized tool for this, I borrowed one from my dealer, made the job super easy.

Tuesday · May 7, 2012

Extreme-One said:
If I remember correctly the bearing behind the secondary on the shaft has a spanner nut behind the bearing, use a shock spring adjustment wrench and spin it off. Once off you can get the bearing out. Yamaha has a specialized tool for this, I borrowed one from my dealer, made the job super easy.

I have pulled the jackshaft out. No spanner nut. The only thing that stops the bearing is a "ridge" on the shaft so you dont put it on to far.

Heat the jackshaft to take it off? Then cool the shaft to put the bearing back on?

Tuesday · May 7, 2012

Just used a big press and took it off.

Went to a bearing retailer and the jackshaft bearing they cant even order. Got bent at yamaha for 35$ for 1 bearing.....woot.

Now to put it all back together :face-icon-small-blu

ruffryder · May 7, 2012

There is a thread on here with all the correct part numbers for the bearings and seals. It is in the sticky.

apex jeff · May 7, 2012

Tuesday said:
Just used a big press and took it off.

Went to a bearing retailer and the jackshaft bearing they cant even order. Got bent at yamaha for 35$ for 1 bearing.....woot.

Now to put it all back together :face-icon-small-blu

$10,000 sled $35 bearing... $48,000 Duramax $500 wheel bearing... guess it's all relative?:face-icon-small-dis

philsummers21 · May 12, 2012

Hmm same bearing just took a crap on me today. Calling it quits for the season and plan to put all new bearings in this summer.

motojunkie101 · May 12, 2012

Here is the link Ruffy was talking about:

http://www.snowestonline.com/forum/showthread.php?t=179800

Tuesday · May 12, 2012

All bearings changed. Just used a press to get the clutch side jackshaft bearing off/on. Everything went back together fairly well. The chain case cover was its usual PITA but the rest was fine.

While I was at it I reversed my drivers and flipped my track again. Should be gtg next season.

The bearing showing the worst wear was the typical drive shaft clutch side bearing. It was still functional but it had taken a beating in 2500km or so.

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Changing bearing on clutch side jack shaft.

Tuesday

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