the beer hunter
Registered user
I had a look around to see if there was any info on replacing swingarm bearings before I started this but couldn't find anything.
Changed mine this morning, here's a rough walk-through guide.
I noticed play earlier this week when I was reftting the rear wheel.
At 40 seconds the wear can be seen quite clearly..
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I won't tell you how to remove the swingarm, if that's a problem you may be best leaving this job to a dealer.
I left the linkages on (as the linkage bearings had been replaced earlier)
If the pivot shaft is tight be carefull not to peen the threads over when knocking it out because if you do the shaft won't pass through the bearings/spacers.
I just backed the nut off a few turns & hit it with a copper hammer to get it moving - came out OK.
Once the swingarm was off it was apparent where the problem was, one side was black grease, the other was rusty brown.
The pivot shaft just runs through a bush & this bush sits inside the roller bearing. All the wear was on the outside face of the bush & the rollers.
Here's the new kit, All Balls part No. 28-1047 - about £45.
Those 2 thick gold washers actually go into the engine casing, the rest go into the swingarm.
Just about see where these go, I left these as the pivot shaft was a good fit through the engine with no movement at all.
OK, now the fun part - getting the bearings out.
There's a few ways to go about this, here's what I did.
Straight away I attempted to go right in & just attack the bearings with a hammer & drift - No way - too tight.
This method worked for me:
Fill a bucket up with hot water & put the swingarm in.
You may think that's not going to get it very hot but believe me when you take it out you can't hold it for long without it burning.
Find a suitable sized washer/socket large enough to cover the roller bearing but small enough to pass through the swingarm (dimensions supplied later)
I found a thick washer just perfect for the job. (shown here against the old bearing)
Once I got the swingarm out of the water, quickly support the base with something to act as an anvil & drive the bearing out.
Came out quite easy.
Clean everything up & pop the new bearings in the freezer.
Here are some dimensions for a suitable 'driver'
Old bearing ambient temperature
New bearing just out of the freezer
Cold bearing/hot swingarm - goes in a treat
Anvil, washer, punch.
Fit the bearings with the writing to the outside.
Grease everything up, push in the seals & spacers. I put the shaft back in to check everything was lined up OK & was rotating freely.
Clean the area it's going into
Refit & torque everything up
Taking my time, plenty of coffee breaks & with no problems easy done in 4 hours.
Changed mine this morning, here's a rough walk-through guide.
I noticed play earlier this week when I was reftting the rear wheel.
At 40 seconds the wear can be seen quite clearly..
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I won't tell you how to remove the swingarm, if that's a problem you may be best leaving this job to a dealer.
I left the linkages on (as the linkage bearings had been replaced earlier)
If the pivot shaft is tight be carefull not to peen the threads over when knocking it out because if you do the shaft won't pass through the bearings/spacers.
I just backed the nut off a few turns & hit it with a copper hammer to get it moving - came out OK.
Once the swingarm was off it was apparent where the problem was, one side was black grease, the other was rusty brown.
The pivot shaft just runs through a bush & this bush sits inside the roller bearing. All the wear was on the outside face of the bush & the rollers.
Here's the new kit, All Balls part No. 28-1047 - about £45.
Those 2 thick gold washers actually go into the engine casing, the rest go into the swingarm.
Just about see where these go, I left these as the pivot shaft was a good fit through the engine with no movement at all.
OK, now the fun part - getting the bearings out.
There's a few ways to go about this, here's what I did.
Straight away I attempted to go right in & just attack the bearings with a hammer & drift - No way - too tight.
This method worked for me:
Fill a bucket up with hot water & put the swingarm in.
You may think that's not going to get it very hot but believe me when you take it out you can't hold it for long without it burning.
Find a suitable sized washer/socket large enough to cover the roller bearing but small enough to pass through the swingarm (dimensions supplied later)
I found a thick washer just perfect for the job. (shown here against the old bearing)
Once I got the swingarm out of the water, quickly support the base with something to act as an anvil & drive the bearing out.
Came out quite easy.
Clean everything up & pop the new bearings in the freezer.
Here are some dimensions for a suitable 'driver'
Old bearing ambient temperature
New bearing just out of the freezer
Cold bearing/hot swingarm - goes in a treat
Anvil, washer, punch.
Fit the bearings with the writing to the outside.
Grease everything up, push in the seals & spacers. I put the shaft back in to check everything was lined up OK & was rotating freely.
Clean the area it's going into
Refit & torque everything up
Taking my time, plenty of coffee breaks & with no problems easy done in 4 hours.
