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Arm chair racerFirst time rider
well i tore down my 86 motor for powdercoating. there are three very small bearings in the cases that some shafts ride on, and they are pressed in from one side and you can't get at the other side of them to drive them out. is there a special tool or trick to getting them out? would they be ok to leave in for powdercoating since they don't appear to have any plastic parts to them?
1986 Kawasaki KXT 250 tecate
ported, FMF pipe, DG silencer, boysen stage II reeds, 39mm keihin PWK, T4 thumb throttle and front master
At The Back Of The Pack
Arm chair racerAt the back of the pack
Clean them up real good. Preheat the oven to about 425 bake them for maybe 1/2 hour then just tap the cases on the floor. Since alluminum and steel expand at different rates the steel bearing should just fall out.
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Arm chair racerAt the back of the pack
To put them back in you can just feeze the bearings over night and they will slide right back in. We used to do this with R/C helicopter engines and it works like a charm.
My other user 3WW ID was Nitebiker07.
Teaching quads a lesson
i used a slidewith expandable fingers. the local engine builder had one. just slides into the bearing where the shafts go, and the fingers expand (much like a reverse pulley puller) and then taptaptap out pops the bearings.
At The Back Of The Pack
Arm chair racerFirst time rider
i tried to heat it wtih a torch on the case side but it didn't "fall out" i'll have to try the oven thing.
1986 Kawasaki KXT 250 tecate
ported, FMF pipe, DG silencer, boysen stage II reeds, 39mm keihin PWK, T4 thumb throttle and front master
At The Back Of The Pack
Arm chair racerAt the back of the pack
The trick is to heat it evenly thats why the oven works. I did it to a carrier the other night and it worked perfectly.
At The Back Of The Pack
Arm chair racerFirst time rider
good news is the oven trick worked great. bad news is since everything was still hot i decided i would pull out the studs out of the case and the cylinder. all of them came out fine except one in the cylinder and it snapped off in the cylinder. any trick to getting them out? can i helicoil the cylinder?
Last edited by joe_f7; 04-08-2008 at 09:13 PM.
1986 Kawasaki KXT 250 tecate
ported, FMF pipe, DG silencer, boysen stage II reeds, 39mm keihin PWK, T4 thumb throttle and front master
My other user 3WW ID was Nitebiker07.
Teaching quads a lesson
machine shop would be your best bet i think.
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