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Discussion Starter · #1 ·
Does anyone have the seal P/N for the rear axle seal on a 816. I'm getting ready to install the rear PTO axle block and the bad seal I'm replacing was a metal housing but I'm looking for the newer mostly rubber seal used on the newer G series. Also does the rear PTO shaft that goes in the axle block always have alot of play front to back. The axle block measures 4" and the shaft measured between the washers and retaining clips is 4.25" so the shaft can move 1/4" front to rear. Is that normal or is something missing or worn out? Thanks Jason
 

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I bought a bunch of these recently from this seller:

http://www.ebay.com/itm/160690076134

This seal works for the 800s through the Pro-G's.

Now, for the rear PTO shaft. The original 816 just had a washer and retaining ring keeping it in place, and it moved like crazy. If you look at the IPL for a newer rear PTO kit, Gravely changed to shims and roller bearings. You should be able to use the later parts to lessen the slop, just beware that the exposed bearings are very susceptible to moisture. One of the rear PTO blocks I got recently was completely rusted in place, but it wasn't too bad to free up.
 

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Discussion Starter · #3 ·
Thanks Marc I went ahead a got a couple of seals. now I see how the newer ones are put together. I was thinking the thrust bearings or bronze thrust washers 1" ID 1/8" thick they would take out the slop but not rust up like the thrust bearings.
 

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Thanks Marc I went ahead a got a couple of seals. now I see how the newer ones are put together. I was thinking the thrust bearings or bronze thrust washers 1" ID 1/8" thick they would take out the slop but not rust up like the thrust bearings.
I'm willing to bet Gravely didn't want that shaft to stay installed when it wasn't in use.
 

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The R20 used in my Gravely housing is an open bearing so the width is .375 not .500. On my housing either bearing will work as the snap ring is .500 inches from where the bearing sits.
 

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$8.95? That is robbery.
Teach a man to fish, I guess.

I have very little luck trying to cross any of these parts and I don't trust myself to try to measure them and risk wasting money ordering the generic part. The cheapest online Gravely dealer was $12.
 

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I bought a few from Accurate some time ago. Likely not worth saving the 4 bucks if all you need is a single seal. I think I bought a dozen the last time I ordered them. I also ordered a bunch of other seals at the same time.
 

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Discussion Starter · #9 ·
Does anyone have the seal P/N for the rear axle seal.I'm looking for the newer mostly rubber seal used on the newer G series. Thanks Jason
I had a few of these seals and thought I had the number wrote down but now I can't find it and have already installed the seals I had so I can't look at them. Does anyone have the part number handy? Jason
 

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Discussion Starter · #10 ·
I had a few of these seals and thought I had the number wrote down but now I can't find it and have already installed the seals I had so I can't look at them. Does anyone have the part number handy? Jason
Help? Anyone?
 

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Help? Anyone?
Following the ebay link from an earlier reply by Yamato72 I used the old gravely part number 18031, then looking at the seal and bearing cross reference chart Chip old did however long ago came up with, manufacturer, National, part # 450165.
If you can't find that seal at least you or the parts house should be able to cross reference it to something more current.

Also I can't open it at the moment because I have a new lap top without office of any kind but check the cross reference spread sheet JRD is heading up. It may be in there.
Good luck.
 
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