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PTEK Crank Movement

800r ptek crank

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#1 mainesummit

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Posted 02 March 2021 - 09:54 AM

I was doing some pre ride maintenance on my 08 Summit with the 800r PTEK and noticed my clutch had some movement up and down. Pulled it off and can move the crank up and down by hand. Obviously this seems bad. I'm assuming the bearings are shot. Sled will still start and run fine even did 20 miles the other day around the house with no issues. Anyone seen this before? Probably not wise to ride any longer I'd assume? Was planning to do a rebuild this summer, but I guess I'll have to start now. 

 

Link to video of movement: https://www.youtube....h?v=hPhsL5PZJDc

 



#2 jack-danels

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Posted 02 March 2021 - 11:28 AM

These cranks are weak and bend easy.
Best thing to do is to measure the run-out (what the manual calls deflection).

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1998 Summit 670 X 151
2009 Summit 800 156 x 3"
2015 Summit 800 X T3 174

#3 Daag44

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Posted 03 March 2021 - 09:50 PM

These cranks are weak and bend easy.
Best thing to do is to measure the run-out (what the manual calls deflection).

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I don't think they are weak, but maybe you had something in mind?  With all brand new parts, this is a beefy crankshaft.


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#4 jack-danels

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Posted 04 March 2021 - 02:09 AM

Put a dial indicator on any 800r (ptek or etec) with any miles on it and you'll find a crank near or over the limit
A blown belt can be enough to bend these cranks; especially rebuilt ones.

Sent from my Pixel 2 using Tapatalk
1998 Summit 670 X 151
2009 Summit 800 156 x 3"
2015 Summit 800 X T3 174





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