440 reverser

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deeretails
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Location: Southeastern Pennsylvania

440 reverser

Post by deeretails » Sat Oct 06, 2018 9:02 am

Rebuilding a 440 reverser. Book calls for type 'A' transmission fluid. What is a substitute, can't find 'A' fluid.

Thanks,

Mark

Jim B
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Location: western Maine

Re: 440 reverser

Post by Jim B » Sat Oct 06, 2018 1:08 pm

When the use of automatics began the fluid for GM automatics was called Type A. Ford transmissions used Type F. Different friction coefficients. Lavoy or Stan may have more info but the Dextron II, Dextron III, etc. are the GM spec fluids that took Type A's place as transmissions and fluids improved. I used Dextron Type III in my 430 reverser. HYGARD or a equal might be ok but I can't say.

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Stan Disbrow
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Re: 440 reverser

Post by Stan Disbrow » Sat Oct 06, 2018 5:02 pm

Hi,

I would not use ATF. I use regular tractor hyd fluid, which is as close as we get to Type A these days. I find HyGard makes them rather noisy as it is thinner.

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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Lavoy
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Re: 440 reverser

Post by Lavoy » Mon Oct 08, 2018 9:04 am

Run HyGard or equivalent only.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

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Stan Disbrow
350 crawler
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Re: 440 reverser

Post by Stan Disbrow » Mon Oct 08, 2018 2:05 pm

Hi,

I should be a tad more clear. When I say hydraulic oil, I mean the modern transmission, gear and hydrauilc oil. Of which, Hygard is a brand name of John Deere. There are equivalents from other brands, some of which are of a higher viscosity than Deere's offering. The higher viscosity oils tend to make the spyder gears in the reverser run quieter than HyGard.

That said, that kind of product is what you need. You will not find a Type A out there anywhere.

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
Have: '78 JD350C w/6310 outside manual blade
Useta Have: '68 JD350, '51 Terratrac GT-25
Also Have: 1950 M, 2005 x495, 2008 5103 (now known as 5045D)

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