1959 cat d4 7u questions

[597ud4]

Alright I "inherited" an old d4 from my grandfather who passed away recently and I have a few questions about the machine. First is it has an older hyster d4 winch on it that has a chunk missing up top so the question is does the winch share oil with the ring and pinion gears where it is bolted to the tractor. Second the clutch and the trans oil have a little water in them so what is the best way to flush these types of things for as cheap as possible, im a high school student still. I grew up playing on old cable 8's and 7's and working on the stuff with my grandfather so I know a little bit but not quite enough.

 

[Old Magnet]

The winch oil is separate from the machine. A diesel flush for the transmission is typical. Clutch compartment should be dry unless it is an oil clutch, just drain it off.
If it really is an oil clutch you can do the diesel flush there to.

 

[597ud4]

Thanks, it is an oil clutch. I have been told kerosene works in the past but I have been wary of ruining something I dont have the money to rebuild.

 

[Old Magnet]

Kerosene was the choice of the past but that has become pricey stuff and the Diesel works just as well. You don't need to fill the compartments, just enough for the parts to dip and splash while you run it back and forth for a few minutes then dump and replace with correct oil.

 

[TXGOAT]

I have a D4 6U, # 4774.... love it. It had a good deal of water in the transmission. I let it drain overnight and flushed it with diesel and it seems to be fine.

 

[Oletrapper]

Hi Guys, I'm new to the forum and also have a few questions on a D-4. I have looked everywhere for lube information and can't find anything. I also have water in transmission and final drive. I guess I'll take the advice given to 597 and flush with the fuel oil. What gear oil should be used in those areas. Should it use gear oil or hydraulic oil? My next question, The undercarriage has rollers that can be greased. I think they are allimite button grease fittings. Can find any information on what grease fitting to use. I am referring to the diameter of the fitting. Any and all help would be greatly appreciated. This is a 1952 D-4. Just got it running today. Runs great. Pony motor needs rear main crank seal. I can probably pull the flywheel and get to it. Not sure yet. Again, no information available. Sorry for rambling. Thanks, Oletrapper

 

[Old Magnet]

You need to shop ebay for a "Operations and Maintenance" manual for the 6U/7U D4 for lubrication instructions and more. Trans & finals take 90wt gear oil. Rollers have a 7/8" dia. button head size. Do not use grease, they take a light "00" lube applied with a "volume filler" that is low pressure and will not blow out the seals.

 

[Oletrapper]

7/8" button

Thank you Old Magnet, Any idea where I could get the 00 grease? I think I found the grease tool for the 7/8" button. Thanks again, Oletrapper

 

[Oletrapper]

You need to shop ebay for a "Operations and Maintenance" manual for the 6U/7U D4 for lubrication instructions and more. Trans & finals take 90wt gear oil. Rollers have a 7/8" dia. button head size. Do not use grease, they take a light "00" lube applied with a "volume filler" that is low pressure and will not blow out the seals.

Also meant to ask, is the volume filler gun a special grease gun? I guess I still have lots of research to do. Thanks again.

 

[Old Magnet]

Thank you Old Magnet, Any idea where I could get the 00 grease? I think I found the grease tool for the 7/8" button. Thanks again, Oletrapper

Also known as "Track & Roller Lube" and "Corn Head Grease"
It's a lite grease that will flow.

 

[Old Magnet]

Also meant to ask, is the volume filler gun a special grease gun? I guess I still have lots of research to do. Thanks again.

Old style looked like this, there are more modern versions around but they ain't cheap.
Button adapter can be had from "McMaster", sometimes on ebay.

 

[Oletrapper]

Your right, they're not cheap. May have to improvise. Worked on the D-4 last night. Found that the two areas that had water were the wet clutch area and the transmission area. The bad news is that when we went to drain the final drive on each side, the drain plugs had been removed. Must now look for replacement plugs and also locate the fill plugs then flush the final drives also. Oh well, we shall see. Sure hope there are no leaks.

 

[Old Magnet]

Are you sure your looking at the right plugs? It was common to leave out the steering clutch compartment plugs. Would be pretty strange to not have the finals drain plugs in place. Fill plugs are on the elbows in back. Finals drain plugs are vertical under the tractor, back side of gear case.

 

[Old Magnet]

Looks like they've hit the after market.
http://www.ebay.com/itm/7H1680-Comp...535?pt=LH_DefaultDomain_0&hash=item51c68776df

 

[TXGOAT]

I think Cat still has the big flanged gearbox plugs with the square or hex socket.

 

[Oletrapper]

Plugs

Your probably right. Going to clean and investigate tomorrow and look for other plugs.

Are you sure your looking at the right plugs? It was common to leave out the steering clutch compartment plugs. Would be pretty strange to not have the finals drain plugs in place. Fill plugs are on the elbows in back. Finals drain plugs are vertical under the tractor, back side of gear case.

 

[Former Wrench]

It has been so long since I seen one of these (lube pump) I had forgotten about them. Thanks for the memory.

 

[Oletrapper]

Found these.

Old Magnet, Found these today. I think they are the fill plugs for the finals. Guess you just fill to the top and your done. No water in this area either. That's a plus. Hope I can attach photo.

 

[Old Magnet]

Yes, those are the fill plugs. If there is any water in there they would be overfull but you'd need to crack the drain plugs to check.

 

[597ud4]

Im starting to have a little trouble with the pony now I throw the compression release and she wants to just die and has if I dont release it quick or get the big motor running and the clutch to make it turn the big motor doesn't want to stay engaged if I dont hold it and sometimes it doesn't release if the pony dies. On top of it all it started to burn a little oil when the oil was a little thin dont think it is with the new sae 30 I put in, the pony motor also doesn't like to start too easy unless I hit it with either or choke it with me hand and it dies a lot. It has in the seat starting so the pony clutch is a little different.