Trans Lube

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Barnyard
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Trans Lube

Postby Barnyard » Sun Feb 09, 2020 9:07 pm

I have several quarts of 85w140 gear oil sitting on my shelf. Does anyone see a problem with using this in a Cub transmission?
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.

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Re: Trans Lube

Postby Waif » Sun Feb 09, 2020 9:32 pm

If it's Gl-5 I'd not use it due to bushings incompatibility..
Better than nothing in a pinch , but there's GL-4 's that would be closer to ideal.
.

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Barnyard
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Re: Trans Lube

Postby Barnyard » Sun Feb 09, 2020 9:53 pm

It says it exceeds specs for gl4 & 5.
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Re: Trans Lube

Postby Waif » Sun Feb 09, 2020 11:05 pm

Barnyard wrote:It says it exceeds specs for gl4 & 5.


Should be fine then.
Maybe a heavier viscosity on real cold days , but it's not an intricate ,or high speed deal.
You have a spare tranny ( or thirty) around there anyways probably ... :lol:

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Don McCombs
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Re: Trans Lube

Postby Don McCombs » Sun Feb 09, 2020 11:10 pm

How many bronze bushings in a Cub transmission?
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Barnyard
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Re: Trans Lube

Postby Barnyard » Sun Feb 09, 2020 11:11 pm

Waif wrote:You have a spare tranny ( or thirty) around there anyways probably .

Replacing one this weekend at DSCF. I'll probably swing by TSC in the morning and pick up some 80/90. I just wanted to use up what has been sitting around a while.
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.

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Bill V in Md
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Re: Trans Lube

Postby Bill V in Md » Mon Feb 10, 2020 7:35 am

Don McCombs wrote:How many bronze bushings in a Cub transmission?

PTO shaft pilot bushing is bronze. Not sure if there are any other yellow metal components.
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Re: Trans Lube

Postby tnestell » Mon Feb 10, 2020 9:44 am

Bill V in Md wrote:
Don McCombs wrote:How many bronze bushings in a Cub transmission?

PTO shaft pilot bushing is bronze. Not sure if there are any other yellow metal components.


That bushing is not normally exposed to the gear lub.

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Re: Trans Lube

Postby Waif » Mon Feb 10, 2020 10:29 am

Barnyard wrote:
Waif wrote:You have a spare tranny ( or thirty) around there anyways probably .

Replacing one this weekend at DSCF. I'll probably swing by TSC in the morning and pick up some 80/90. I just wanted to use up what has been sitting around a while.


I'm reluctant to recommend non spec stuff on a forum.
Lots of leeway on some gear sets when well cut and matched in good condition.
An old joke in one shop used to be that you could pee in some gearboxes and they'd run. Some smaller ones were longtime leakers when I started and they survived the abuse.
Don't want that kind of neglect in our Cubs though.

That said , the heaviest fluids I've used have been in the slowest/high torque gearboxes. Greatest load capacity transfer carts come to mind as an example. My crude figuring has the heavy viscosity stuff having less throw off or fluid flowing off gears when a gear is at top of /highest position from bath.
Teeth need room though. Many have room , but that needs confirmed if not known.

Or running a heavy lube where a thin one should be in fresh or tight gears can cause a difference in resistance or pressure somewhere. (Like a belt too tight can worry a shaft or bearing more than the pulley(s) it rides on).

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Re: Trans Lube

Postby Alan Riley » Mon Feb 10, 2020 10:34 am

Reverse idler bushing
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Re: Trans Lube

Postby 1sgWillys » Tue Feb 25, 2020 1:23 pm

Here is what mine is currently lubbed with. Replacing with 90W mineral oil
Attachments
41DCCEC6-C8F5-4A22-AE8A-FD5D96851DDD.jpeg
E36C8FB2-E6FC-4245-BCDA-4C29F6B10A41.jpeg
1950 Farmall Cub :tractor:

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Re: Trans Lube

Postby Clemsonfor » Tue Feb 25, 2020 5:45 pm

Barnyard wrote:I have several quarts of 85w140 gear oil sitting on my shelf. Does anyone see a problem with using this in a Cub transmission?



Aren't you an expert on these things??

I am far from an expert, but I don't see any issue with useing it on the old school gears and bearings.

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Re: Trans Lube

Postby BigBill » Tue Feb 25, 2020 8:42 pm

I add the moly gear oil additive or use the moly gear oil. Barnyard I use the 85w140 oil you have. I have 5 gallons of synthetic gear oil someday I’ll use up too.

https://www.tsmoly.com/additives-moly-g ... p-162.html

My equipment deserves the best.
I'm technically misunderstood at times i guess its been this way my whole life so why should it change now.

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Barnyard
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2 Lo-Boys (Square Hood)
2 Farmall 404's
1 Farmall H
1 Ferguson 20
1 Cub Cadet 125
1 Kubota B-7100
Circle of Safety: Y
Location: OH, New Haven (Hamilton County)

Re: Trans Lube

Postby Barnyard » Tue Feb 25, 2020 10:33 pm

Clemsonfor wrote:Aren't you an expert on these things??

I am far from an expert, but I don't see any issue with useing it on the old school gears and bearings.

Nope, I never claimed to be, that is why I asked. :)
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.

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