ZRT Crank Seal Replacement - Snowmobile Forum: Your #1 Snowmobile Forum
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post #1 of 12 (permalink) Old 01-01-2012, 08:11 AM Thread Starter
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ZRT Crank Seal Replacement

1997 EXT600 (ZRT600) triple triple. Is it practical to replace the PTO end crank seal without cracking the case in half. The sled has 9,500 miles on it and ran fine when I put it away last year. I just finished going through the suspension, re-clipped the track, replaced drive train bearings, disassembled and cleaned the clutches. A failure point of these engines, from what I am reading, is the PTO crank seal. Mine has a bit of moisture from oil on the cover plate. I have not started it yet this year. Just wondering if this would be a good preventative measure.

Last edited by maxman; 01-01-2012 at 08:13 AM. Reason: added model and year
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post #2 of 12 (permalink) Old 01-01-2012, 08:39 AM
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You can replace the seal easily.
Put a bit of grease or oil on the seal where it will contact the crank so it slides easily and gently tap it into place.
Put a drop of red Loc-Tite on the cover plate screws as you do not want them vibrating out.

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post #3 of 12 (permalink) Old 01-01-2012, 08:46 AM Thread Starter
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Thanks. I read somewhere not to, and read other places it was OK. It makes sense to me. What about the MAG seal? That side does not have the cover plate.

The PTO side is the one that is prone to failure, correct?
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post #4 of 12 (permalink) Old 01-01-2012, 08:51 AM
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Correct, it's an "in the sled fix" as all you need to do is pop the clutch off.

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post #5 of 12 (permalink) Old 01-01-2012, 10:26 AM
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Mag side CAN NOT be done without spliting the cases!
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post #6 of 12 (permalink) Old 01-01-2012, 11:09 AM Thread Starter
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OK. I have the cover plate off. Do I just bend and peel and pry the old one out or is there a trick like threading in a couple of screws and using a puller?
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post #7 of 12 (permalink) Old 01-01-2012, 06:53 PM
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I always just used a small screw driver and pried them out.

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post #8 of 12 (permalink) Old 01-01-2012, 09:00 PM Thread Starter
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Thank you! One more question.

Arctic Cat OEM part number 3003-759 LH, M40. Lowest cost I could find online including ebay is about $30.

Many sites like Dennis Kirk, Mfg Supply, Marshall have a seal from WINDEROSA for about $4.00.

All the sites reference the OEM number. Dimensions are the same.

Do you have any experience with these WINDEROSA seals?
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post #9 of 12 (permalink) Old 01-01-2012, 09:21 PM
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The genuine Arctic Cat seal has a teflon coated sealing lip that has far less friction and lasts far longer than the aftermarket seals. The Winderosa seal will work but the factory seal is superior. It's $30 and cents at any Arctic Cat dealer, don't waste time ordering it online. Your local dealer needs the support too.
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post #10 of 12 (permalink) Old 01-02-2012, 09:41 PM Thread Starter
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If the Winderosa will work and get me through this season, that's what I'll do. I put over $300 into suspension and clutch rebuild already this year. That's enough. Next year, I'll tear down the engine, and use OEM components.

I respect what you say about the local dealers and will consider that when I can. Problem becomes is that their operating hours do not fit my work hours. Also, the dealers do not stock the special parts anymore. So when I leave work early to get parts, and they do not stock them, they have to order them. Then I need to leave work early again to pick them up. I can skip all that and just order online with a beer in my hand out in the barn after dinner. In two days, they are at my door, when I get home. Just as quick, if not quicker than a dealer. Plus less driving.
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post #11 of 12 (permalink) Old 01-02-2012, 10:25 PM
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try calling the stealer most will let you order over the phone with a credit card if they dont have em in stock and once they get to know you they'll usually just order the smaller parts and let you pay when u pick em up

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post #12 of 12 (permalink) Old 01-04-2012, 08:40 PM
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Personally I'd recommend a factory Suzuki seal and not a cheap china copy. if and when this seal leaks its a Piston and damaged cylinder........

Big Al
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