Stripped Crankshaft Clutch End Help!!

C

Cwagner100

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Oct 10, 2008
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126
Location
NY
I was trying to pull my clutch off because it was cracked and the puller bent and screwed my threads up in the end of the Crankshaft on my 98 SRX 700. How can I fix this? Can I helicoil it? Dam I'm so pissed!!

Any help is Appreciated!!!

Thanks,
Chris
 

u can try to use a tap to tread it back ...........sometime it work if the thread is not all **** up ...i'm sure and helicoil could work but still doesnt know how hard the crank is to drill
 
to many guys have had bad luck with aftermarket pullers...glad I bought one from my Dealers years back..it is still going strong.You might be in a little bit of trouble here..ask a machinist in your area if there is a proper way to fix this .Don't try anything crazy at this point or it may cost you a new crankshaft and motor being torn apart.Get some professional advice first...

PS: I would really be pissed also at this point...
 
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The thread is 1/2 inch fine sae get a good quality bottoming tap and chase the threads use oil and then some carb cleaner to get the chips out with a little air commpressor help to blow the junk out then survey the damage it may not be that bad.
 
I'll stop by Fastenal today and pick a tap up. Only problem clutch is still on the sled and I don't have a puller. Anyone have a good yamaha puller they would be willing to sell?
 
The 1/2 inch thread was a standard started way back in the day and used by about all manufacuerers polaris used a 7/16 thread, now some like skidoo and the polaris liberty use a metric thread.
 
Cwagner100 said:
I'll stop by Fastenal today and pick a tap up. Only problem clutch is still on the sled and I don't have a puller. Anyone have a good yamaha puller they would be willing to sell?
Click to expand...

I had a similar problem on the flywheel side, that thing is on there. I had the puller just about ready to snap. Had to heat the thing pretty good with an oxy-acetylene torch for it to come off.

Heat the clutch, spray that liquid cooler on the shaft. Not sure what the material is, never really looked at the primary closely, so if you do use heat, be careful if its aluminum.

Antiseize will make it a breeze for next time.
 
sxr1000 said:
The 1/2 inch thread was a standard started way back in the day and used by about all manufacuerers polaris used a 7/16 thread, now some like skidoo and the polaris liberty use a metric thread.
Click to expand...


Cool, never knew.

Thanks,

Rustman
 
aha 1/2 UNF? I think that Yamaha have M18x1,5mm, but maybe I´m wrong check it out before you totally ruin the threads in the crank.
 
Sorry before you ruin the threads in the clutch i mean, but this is if you have a yamaha clutch. If the clutch is another brand you should check with the clutch manufacturer what puller you should use.
 
swede has a very good point. did you actually screw up the threads in the crank that the bolt that holds the clutch on threads into or the threads in the clutch where the puller threads into?
 
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