Broken Primary Clutch Springs ??

[gmustangt]

Think i found the culprit fellas...

the brass piece the spring goes around... it has sharp edges on it and i could see "something" (the spring) had been rubbing on it.
Ironically look were my spring broke...
so i took a file and filed off the edges.

 

[rp2000r]

I've looked at 2 2012 Pro's and both had rub marks exactly like the pictures posted above, rubbing on the inner brass colored piece...Both are under 300 miles and haven't broke yet..

Hopefully filing them down will help, Any wat to post a better pic of the piece smoothed out?

 

[wellfed777]

thats what sled_guy was talking about
i'll be checking mine tomorrow


thanks sled_guy

 

[skippy]

I wonder if the jam nut is a little thicker then previous years and the tolerances are tighter between the jam nut and spring when the spring is compressed.. I sanded my jam nut down before I even put a single mile on the sled and mine is starting to rub the paint off the spring..

 

[hiwayman]

@ boston racing.
Right. That's why Indy dan balances clutch's, because polaris has them perfect. That's why some of us also needed to index the spider on our NEW sleds to get the proper belt to sheave clearance. Polaris set the clearance perfect at the factory. That's why many of us have a gram scale in the shop. Polaris has the weights balanced perfect. Sorry, I've been a polaris rider since 1976 and I love my sled but the factory clutch's need a little help!!

 

[Rudy198]

anyone have a before and after pic so a guy can compare...If that is the issue.

 

[seth25]

@ boston racing.
Right. That's why Indy dan balances clutch's, because polaris has them perfect. That's why some of us also needed to index the spider on our NEW sleds to get the proper belt to sheave clearance. Polaris set the clearance perfect at the factory. That's why many of us have a gram scale in the shop. Polaris has the weights balanced perfect. Sorry, I've been a polaris rider since 1976 and I love my sled but the factory clutch's need a little help!!

So its unreasonable to think that a new $12,000 snowmobile should be built correctly and ready to ride?

 

[hiwayman]

So its unreasonable to think that a new $12,000 snowmobile should be built correctly and ready to ride?

Not unreasonable at all. But in the real world how many people on this site bring a sled home from the dealer and only gas and go and don't add any thing extra or do any extra work on the sled?

 

[trackvs2wheels]

For one, I don't expect to have to work on my new $12k sled!!!!

 

[trackvs2wheels]

Well, I'm on the 3rd spring and I have 250 miles on my sled...wtf is wrong with the clutching that could be causing these springs to just literally snap in half???

 

[Oregonsledder]

Well, I'm on the 3rd spring and I have 250 miles on my sled...wtf is wrong with the clutching that could be causing these springs to just literally snap in half???

That's crazy... I have 350 miles on my stock PRO, no problems at all.

Edited: I did have a little coolant on my TPS but nothing else so far!

 

[2012switchbackassault]

Is it just the rmk spring breaking?? I havnt hear of any other model snapping springs.. I ride the switchback assault and switched my spring to a blue pink just to be cautious

 

[Rudy198]

talked to a buddy yesterday who works at a Polaris dealership and said had 2 come in Fri. with broken springs....sound like only RMK's.

 

[2012switchbackassault]

Yea my dealer said no switchbacks only rmks so far and about 6 of them

 

[Rudy198]

Yea my dealer said no switchbacks only rmks so far and about 6 of them

now i'm curious if it's the spring or something in the clutch..Not sure is SB have the same as RMK's

 

[Rudy198]

now i'm curious if it's the spring or something in the clutch..Not sure is SB have the same as RMK's

just looked at the service manual
Switchback part # 7043681 /120-310
RMK part# 7043342 / 140-330

 

[2012switchbackassault]

Guys were having springs other than the ones that come stock break weren't they

 

[Rudy198]

Guys were having springs other than the ones that come stock break weren't they

i believe so...I have 72 miles on mine will take a look at it and see if i notice anything...If so then i expect it to break.

 

[kyler25]

Another broken spring

Have 300 miles on my 12 and broke a blue/pink SLP spring. will look into it tomorrow and see what is happening.

 

[2012switchbackassault]

What sled? Has any switchbacks broke a spring?