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  1. #1
    Veteran Member
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    Default 8n leaking gear fluid out from around the PTO

    Looking at an early fifties 8n that's not been running for several years. It looks to be in pretty bad shape. It's leaking gear oil out of the PTO. Is this serious? What's involved with fixing it?

    TIA

  2. #2
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    Kubota L5030 HSTC, MF 5455

    Default Re: 8n leaking gear fluid out from around the PTO

    If its just the seal, not a biggy. Often the seal is bad because a bearing is bad. Also, the pto shaft surface may need a speedy sleeve to repair it if it has been damaged.

    I did this job on a large massey, took 150$ in bearing/seal/speedy sleeve and a press. Not sure on a machine that old, should be cheaper.

    Quote Originally Posted by keegs View Post
    Looking at an early fifties 8n that's not been running for several years. It looks to be in pretty bad shape. It's leaking gear oil out of the PTO. Is this serious? What's involved with fixing it?

    TIA

  3. #3
    LD1
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    Default Re: 8n leaking gear fluid out from around the PTO

    Should be no big deal at all.

    If I remember correctly, there is an oil seal around the PTO shaft, this could be the culpreit and maybe cost $20 at most.

    But there is also a housing that holds that oil seal and bolts on with 4 bolts. This is a gasketed surface. Either a tube of RTV, some gasket paper, or a new gasket. Either way, sould be under $10.

    BUT, while it is appart, I would recomend replacing the ENTIRE PTO shaft. Those old ones were 1-1/8 6-spline. Current standard is 1-3/8 6 spline. It is a well worthwile upgrade not to have to ever fool around with adapters again. I think that shaft is in the $150 ballpark.
    ".........there is only one way to find out."
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  4. #4
    Gold Member tmajor's Avatar
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    '53 Ford NAA, Woods ZTR MZ1952, '78 Jeep CJ-5

    Default Re: 8n leaking gear fluid out from around the PTO

    Quote Originally Posted by LD1 View Post
    I would recomend replacing the ENTIRE PTO shaft. Those old ones were 1-1/8 6-spline. Current standard is 1-3/8 6 spline. It is a well worthwile upgrade not to have to ever fool around with adapters again.
    I'd say, it depends on what you are going to use it for. I used the adapter to attach my over running clutch. The output of the over running clutch is 1-3/8", so it works with anything.
    "There's gotta be a better way!"

  5. #5
    Veteran Member
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    Kubota M5640SUD

    Default Re: 8n leaking gear fluid out from around the PTO

    You guys are great..thanks.

    The guy wants $500. for it. It was used to farm a small vegitable field in Sullivan County, NY. It needs new front tires and a six volt battery. Not sure if it's worth a half hour drive to look at it.

  6. #6
    Veteran Member Jerry/MT's Avatar
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    Default Re: 8n leaking gear fluid out from around the PTO

    Quote Originally Posted by keegs View Post
    Looking at an early fifties 8n that's not been running for several years. It looks to be in pretty bad shape. It's leaking gear oil out of the PTO. Is this serious? What's involved with fixing it?

    TIA
    Leaking fluid (actually transhydraulic fluid) out of the pto is not serious or difficult to repair. Make sure there is no leakage from where the pins that support the lift arms at the differential housing are attached.

  7. #7
    LD1
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    Default Re: 8n leaking gear fluid out from around the PTO

    If it runs at all, it is well worth $500. Thats almost scrap price. Current scrap price around here + 2500lbs of tractor is about $350 just for scrap. So definatally a steal @ $500.
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    Ford 5500 Backhoe
    Kubota L3400GST W/LA463 FEL
    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
    Sachs-Dolmar 120SI Ported
    (4) Sachs-Dolmar 116SI Ported
    Dolmar PS540
    Sachs-Dolmar 115i
    Sachs-Dolmar 117
    Sachs-Dolmar 112

  8. #8
    Elite Member ToadHill's Avatar
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    Kioti DK35, Ford 8N, Oliver Cletrac

    Default Re: 8n leaking gear fluid out from around the PTO

    The seal is an easy fix, but if you plan to run a bush hog with it, get an over run clutch to attach to the PTO shaft. Without it the rotating force of the hog will push the tractor forward even with the clutch pushed in.

    It's a very strange feeling if it happens to you.
    I can't control my day but I can control my attitude.

  9. #9
    Elite Member sandman2234's Avatar
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    Jacksonville, Florida
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    JD2555

    Default Re: 8n leaking gear fluid out from around the PTO

    I had a pto seal leaking once, and all it ended up being was grass wrapped around the shaft inside the seal. A scribe with a hook snagged it and the seal was fine from then on.
    David from jax
    A serious accident is one that money won't fix.

  10. #10
    Platinum Member
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    Default Re: 8n leaking gear fluid out from around the PTO

    I have a Question on here about a Pto shaft also. Yours I can answer. A seal will solve your problem. Remove the bolts on the back of the Tractor and the pto shaft will come out by pulling it. Drain the rear end fluid first of course! Your hydralics will lift faster in the cold if replaced with modern trans/hyd fluid. $500 dollars is cheap and in the day I would have bought it over the phone. The side mounted distributor is desirable to have on a 8n.

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