Airbox leaks: Check Your Sled

skegpro

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Well, i hate to say it guy's after my post yesterday saying that non so far have ingested snow. Well the shop got one that came in to day, motor is punched. Cat will be covering the cost. Replacing the entire motor. This is an 18.
I'm not kidding, you guys better check them intake screens.
Is this Molykote a sacrafical coating?
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Cat401

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skegpro

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Just checked my sons 2018....it has the exact same gaps on both left and right air intakes. Taping it for now till Cat has replacements.
Thanks for finding the Skegpro
Hey don't forget to pull that upper shroud off and seal up infront of the boot.
I missed this part first time round.
Cheers

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tmo1620

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Not all them are like that, mine dont have that gap there, at least not like that, maybe could slide a piece of paper in mine
 

Eldereldo

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I haven’t had a chance to take it apart to look, but when I had my sled in to Ralph’s for a service and check over, one of the items they did for warranty was to apply a ‘fix’ to close up the gaps.
 
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bgraff1

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Some guys on Snow West claim Cat has a fix/update to fix this.
Anyone in Canada hear about this fix?

Link to thread
https://www.snowest.com/forum/showthread.php?t=444190

I commented on that post And the one guy that said there was a fix hasn’t elaborated orreplied so id take that with a grain of salt. Nobody else has heard of this. Youdthink after replacing how many motors because of this they would come up withsomething. Maybe borrow some glue from the poo guys?
 

Lund

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This is the only real solution to the problem, stops the water and snow from entering the throttle bodies, it works 100%. You will never stop water from entering the air intake track, A/C poor attention to fitment is the #1 problem.
I've done a couple now and they were out all season last year and no longer having this issue, tried and tested. Easy fix.
 

vrscr43

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I have used silicone up top to seal off all the gaps.
But that looks like a good idea as well, if it cant get through there it shouldn't be a problem.
What is the material you used there?
Is that RTV sealant?

Thanks in advance
 

Lund

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I have used silicone up top to seal off all the gaps.
But that looks like a good idea as well, if it cant get through there it shouldn't be a problem.
What is the material you used there?
Is that RTV sealant?

Thanks in advance

Its bulk prefilter material, you can get it from SLP. I cut it about 1" larger then the required size of the hole and spray 3M glue on the inside lip. Then i slip the material into place and let it set for a bit. Then i run a bead of "The right stuff" silicon around the edge to give it that final seal. The right stuff is not effected by fuel and won't deteriorate.

It 100% stop's water from going any further.
 
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vrscr43

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Awesome thanks for the info.
No miles on my sled yet.
This will get done before it hits the snow.
 

Jorgy

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This is an awesome idea. Thanks for the post Lund. I've got a couple unused vents with the pre-filter sitting in the shop. Do you think a marine epoxy / adhevise would work here too? I have some of that 3M stuff from Canadian tire that I use to seal the swim platform of my boat but not sure how it will work if it gets exposed to heat
 

Powpowpow

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you do realize that if some chunks fall off into reeds and the engine happens to fail there is a really good chance they will blame the engine failure on that. i would be very cautious about doing such a mod, risk vs reward. i for one will be just taping up the gap on the intake by the handlebars.
 
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