I just finished putting in new swing arm bearings / bushings, seals, etc in my 2006 because the bearings had spent too much time bathing in muddy water and had got in and done damage. After putting it back together I notice a little bit of play still exists. The bushings do not fit really tight on the swingarm axle, but the axle is pretty consistant in diameter from one length to the other indicating that it is not worn. Anybody else notice this on their bikes? BTW, the bearings had flattened some, even though they still had some grease and the chain was not too tight (which would have flattened the bearings under compression).
Joined Jun 2004
412 Posts | 17+
australia
I agree I expected no or little sideways play. When tightened up the frame seems to stablise the movement, but if any play I would have thought it would multiply into rear end swish. Do you notice the play when bolts correctly torqued?
You shouldn't have a any play that you can feel. This will multiply with use as you end up with increased shock loads on the bearings and uncontrolled movement doesn't help handling.
As an aside, I saw a frame and engine in a jig the other day, an 03 YZ125. They were attempting to remove the swing arm pivot shaft and had had it in a 200 tonne press, yes 200 tonnes and then hit it with heat and percussion and it still wouldn't budge. They were planning to cut the shaft next to the cases with a thin 4" grinder to get the engine out and then were going to machine the rest of it out. What a mess. All of the link bearing rollers had disappeared. Must have been 2" plus of axle movement.
At least yours isn't that bad.
Steve
As an aside, I saw a frame and engine in a jig the other day, an 03 YZ125. They were attempting to remove the swing arm pivot shaft and had had it in a 200 tonne press, yes 200 tonnes and then hit it with heat and percussion and it still wouldn't budge. They were planning to cut the shaft next to the cases with a thin 4" grinder to get the engine out and then were going to machine the rest of it out. What a mess. All of the link bearing rollers had disappeared. Must have been 2" plus of axle movement.
At least yours isn't that bad.
Steve
Apparantly I was not clear on this, there is no side play at the SA pivot, everything is tight from side to side. The play (I think) is the fit of the bushing on the SA pivot axle. The amount of play is small, to detect it, you must try to move the SA sideways from the rear axle. I know the SA axle isn't severly worn because I can still see the black paint from the factory.
Joined Jun 2004
412 Posts | 17+
australia
I know what you mean.... ther wear does not appear to be there but there is a slight movement that does multiply to bigger at the rear axle. Again is it there when all is torqued down.
As for the 220 lb press. Just note this one thing if nothing else. When you get your new bike and everyone says grease the steering head etc, but you want to go for a ride and don't wont to take a new bike apar that is ok......... but DO take out the swing arm bolt and cover it it beatiful anti seize silver stuff or else you will be regretting it one day as mentioned by the 200lb and heating story. With bergs you can usually talk the bolt out as it has nuts on both end.... they have a history with bikes those swedes.
As for the 220 lb press. Just note this one thing if nothing else. When you get your new bike and everyone says grease the steering head etc, but you want to go for a ride and don't wont to take a new bike apar that is ok......... but DO take out the swing arm bolt and cover it it beatiful anti seize silver stuff or else you will be regretting it one day as mentioned by the 200lb and heating story. With bergs you can usually talk the bolt out as it has nuts on both end.... they have a history with bikes those swedes.
fe600racer said:
Yes, a little bit is still perceptable. The manual shows only 2 washers (spacers), and the only 2 came out (one on each end of the bushing on the chain side), none were on the brake side. The whole string of parts must be compressed (torqued down) to avoid movement. The swingarm still swings freely when torqued down, so everything must be OK.
I've got the same thing on my FE550. Only about 2mm of free play when you pull the back wheel with the motion of the rear shock. I pulled it apart & couldn't find where the play was coming from so when you find let me know !
wildman said:
As was asked above, the amount of play when the SA axle is not tight / torqued is significant, meaning that if it does not stay tight then lots of movement (and damage) will happen. This type design does make it easier to take apart and lessens the chance of the whole thing rusting up, but in reality the design is no worse than the way the rear wheel is anchored. So, confirm that the SA axle is tight. The remaining slop, I believe, is between the bushing and the bearing.
Joined Nov 2001
17K Posts | 774+
Ely, England
hi TM
all this has been noted before but alas i can't remember too clearly what i discovered. you might check the doc to see what i wrote ans also i would have started a new thread on it. essentially the pin needs to be fatter or the inner 'gudgeon pin' needs to have a smaller diameter. because this isn't in the specs you'll find that there is a variety in the ID's of these bushes.
i discovered one day that if you put an imperial inner bush with the rest in metric that infact you gt a longer bush by about 0.5mm as well and the whole thing was really tight.
so look at the make of bearing you have there and do a search.
BTW, i mix 50/50 oil and grease and it all lasts far longer.
regards
Taffy
all this has been noted before but alas i can't remember too clearly what i discovered. you might check the doc to see what i wrote ans also i would have started a new thread on it. essentially the pin needs to be fatter or the inner 'gudgeon pin' needs to have a smaller diameter. because this isn't in the specs you'll find that there is a variety in the ID's of these bushes.
i discovered one day that if you put an imperial inner bush with the rest in metric that infact you gt a longer bush by about 0.5mm as well and the whole thing was really tight.
so look at the make of bearing you have there and do a search.
BTW, i mix 50/50 oil and grease and it all lasts far longer.
regards
Taffy
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