National Oil seals for M610

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cb1

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Jul 28, 2007
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Got my M610 all taken apart and need 10 axle seals. They are National and have a part number (40301XX) stamped on them. They do not come up or cross at the local parts (auto) store, and they sell National seals. Any help? Also, I know there are a couple opinions out there, but what oil should I use after I replace the seals and bearings? I have read everything from transmission fluid, engine oil to hydraulic oil. But most important, I need a good number for seals. And a good source (cheapest). Thanks
 

Tazza

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Try the dealer, on my 743 the price they sold seals for were pretty darn close to what i paid from a guy my dad knew so i got them at the best possible price.
Try taking a seal with you and measure the shaft and see if they can give you a seal from dimensions.
There are a few M610 people in here that know their stuff! they will no doubt chime in and tell you what fluid you should be using.
 

OldMachinist

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May 24, 2006
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Try the dealer, on my 743 the price they sold seals for were pretty darn close to what i paid from a guy my dad knew so i got them at the best possible price.
Try taking a seal with you and measure the shaft and see if they can give you a seal from dimensions.
There are a few M610 people in here that know their stuff! they will no doubt chime in and tell you what fluid you should be using.
I found a National seal 40301S at the place I buy from for $7.10 each. The dimensions are 2.000 ID x 3.005 OD x .250 wide. Here's a link to it http://www.ebatmus.com/cart.epl?Buy=1&Quantity=1&ItemID=191324&Query=40301

Hope it helps you out.
 

jerry

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May 3, 2007
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2,040
On my 610 I only replaced 2 axle seals but found them to be 1/3 cheaper and a better designed seal at Bobcat rather than buying them at NAPA. I used atf oil in it and it worked good but with a leaky seal it leaves a red trail in the snow.
 

cb1

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Jul 28, 2007
Messages
3
Thanks for the replies guys. I find that Bobcat actually has the correct seal for $6.17 each. However they sell a kit which contains two seals, a repair sleeve and lock tite for $45.98 per axle. So basically $61.70 for the cheap fix or $224.00 for fixing it right. Probable should spend the extra 140 up front, as the seals are somewhat difficult to replace. Thanks again guys
 

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