Early 1960's Hough H50

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Mar 29, 2025
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195
I'm not sure if the transmission has fiber or sintered brass discs. It has a torque converter, and also drives a charge pump to make 300PSI for the clutches. I've read machines from this era use ATF Type "A", but i honestly wouldn't know the difference. What came out is a nice clean bright red like dextron3 or something similiar.

I just pulled both filters in the transmission and the magnetic plug, and i was surprised. all 3 are spotless and the fluid is beautiful. It was parked after digging a basement, so the gearbox can't be that bad.

I've sourced new filters, and this machine has a very important and miserably brutal duty ahead of it. So given age, questions, and in hopes to never need to drop a 1000# gearbox, what fluid should i use?

Are there specific fluids depending on what type of clutches are inside?
 

that thread is deadlocked now, but maybe dex3 isn't all that bad of an option/idea
 
I would like to know how you make out with this. We have a Hough 30 that I'd like to get running and operating, and I think someone filled the transmission with machine cutting oil. So before I get it running, I want to drain and fill the transmission and torque converter.
 
Well, given some searching, dex3 is a typeA replacement.

And I actually have the H50-D, which is even more rare,

Does yours have the torque converter and charge pump with hoses and a shaft feeding the actual transmission itself?

My gearbox has 2 drain plugs, and the accessory drive houses the 3 hydraulic pumps, torque converter,.and filter.

I have a wix 51159, which is discontinued by wix.. Any idea what filter yours has?
 
I would like to know how you make out with this. We have a Hough 30 that I'd like to get running and operating, and I think someone filled the transmission with machine cutting oil. So before I get it running, I want to drain and fill the transmission and torque converter.

IMG_20250326_110611.webp


IMG_20250412_132753.webp
 
Well, given some searching, dex3 is a typeA replacement.

And I actually have the H50-D, which is even more rare,

Does yours have the torque converter and charge pump with hoses and a shaft feeding the actual transmission itself?

My gearbox has 2 drain plugs, and the accessory drive houses the 3 hydraulic pumps, torque converter,.and filter.

I have a wix 51159, which is discontinued by wix.. Any idea what filter yours has?

https://www.oilfilter-crossreference.com/convert/Wix/51159
 
i always laugh at those cross reference sites, unless it's a manufacturer's cross reference.

Apparently, to that website, since the 51159 is discontinued, the rabbit hole says there's like 3000 different alternatives, and none of them fit.

This is going to be an actual tape measure/caliper, order parts, and actually do some work work to find alternatives.

I did take a gamble and ordered one off Ebay.
 
I'm not sure about the H30, because there is not much room in there and mine is an articulated machine. My father has an Hough 65 which is set up just like you said. The pumps and TC are in the bellhousing with an output stub shaft that goes to the transmission. Both machines are about 3 hours away, otherwise I'd go look and get more info for you.

What are you planning on doing with the old girl? And are those bucket pins really as loose as they look?
 
Yes, they are that loose.

IMG_20250321_112510.webp


And i plan to make her even more loose. Lots of iron junk and cars to bite into and dead lift.

Tree limbs to trim. I need to fix the hill in my backyard. Where i park my vehicles i need cut into the bank and build a retaining wall so it looks nicer.

Some daisies the pull in the front yard. It has a 3rd spool, so i might rent or borrow a rake and destroy the top 3 inches of eveywhere in the other backyard. that hasn't been mowed in 15 years.

Typical chores around the house. Nothing special.

The fluid is beautiful and the filters are clean, and there's only a teaspoon of paste on each case magnet plug. And this machine dug my basement before i parked it. So i have alot of faith in the driveline. 2 of 4 planetaries have dry crusty ooze, but it's been sitting so long, it's hard to tell if it's a slow or fast leak. They're clocked too wrong to check.

It's had a rough life. back in the 1970s dad got it from someone who was into only iron clean up. Shortly after the engine went bad, and he mocked in this 1969 mopar 381LA. As far as i can tell, it's onto it's 3rd timing gear and chain, and it had a fresh set installed back in 1980 when the mopar was swapped. Last month is it's 3rd.
The splines on the machine side are stripped where the hydraulic pump mounts. The old pump was removed, and the input shaft had a stubb welded to it and splined with the wonder wheel all freehand. It never broke, but at the same time a rag was forgotten in the suction line during reassembly. That poor pump was never right. Couldn't make 1000psi near redline, and pumped as slow as a garden hose. Chasing the filters didn't help. Somewhere else in history the lift arm middle support that goes across has been broken more then once, and some 3/4" 3x3 angle iron added since, and looks like that broke once. Years ago it broke a rear spindle, Upon the surprise disassembly, we noticed half of the crack was fresh iron and other was black and rusty. So it's had an oopsie for years before that happened on that day. Which surprised us, as i was just rolling on flat ground in a straight line. You can't tell from the photo, but the bucket top corners are curved downward and hunched looking, because of the clamshell being misused and abused. It has a proportional valve, unlike most skidsteers brush buckets, as one side can close at a time if something taller is holding up the other 1/2 of the clamps. Eliminates the possibilty of tweaking the bucket

This Drott 4in1 is setup both cylinders are kept same pressure/flow, and it's a heavy bucket, but i'm sure trimming tree branches raised hell with it that's only visible after thousands of hard clam bites.


So, i'm mocking a radiator to fit the chassis, raising it, and adding a hydraulic pump right off the crank. I plan to pin it in addition to the woodruff key. If race boys can pump air, i'm going to pump oil. I was going to aim for 35GPM @ 2000RPM. That should get me where i need for turning all the pumps and still roll around in gear.

I'm redoing all the gauges, and adding temp sensors, and making sure everything works under a hard load. I don't plan to be bashful, given that this poor machine has already done.
 
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I love the stories of these old beasts! My father has a 1970 H65 that has done an incredible amount of work, and was his main loader for many years in his small excavating company. I learned how to operate equipment on that and an old Ford 555 backhoe. He still has the 65 but with a IH 466 in it for power. The original 360 (?) was junk and never very reliable. It hasn't been used in a while, but with fresh batteries, it will fire right up.

A couple of years ago my uncle bought the H30 with the intention to putter around with it. He passed before he could do much other than get it running.
 
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