International 500 D hydrolic oil information

What makes the dozer blade drift down????Leaking cylinders.....Hydrolic oil pump......control assembly???????????Can anyone tell me what is the hydrolic oil capicity is in gallons or quarts......I read in a manual that the pump pumps 7.5 gallon of oil..I only put 5.0 gallons when I changed the fluid....Dip stick shows that it is full of oil.....

(quoted from post at 15:16:19 07/11/20) What makes the dozer blade drift down????Leaking cylinders.....Hydrolic oil pump......control assembly???????????Can anyone tell me what is the hydrolic oil capicity is in gallons or quarts......I read in a manual that the pump pumps 7.5 gallon of oil..I only put 5.0 gallons when I changed the fluid....Dip stick shows that it is full of oil.....

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I don't think they made a 500 D series. It looks like they started with the 500, which was replaced by the 500C, which was replaced by the 500E. The 500 and 500C were gas or diesel, the 500E was diesel only, I from info I see. By calling it a 500 D do you mean yours is a 500 with a diesel engine?

Some causes of hydraulic cylinders drifting down: can be external leaks in lines between the control valve and cylinder, internal or external cylinder leaks, or out of adjustment or internal wear in control valves. Do you see any leaks? If not worn packing in one or both cylinders is often a cause, followed by worn control valves. I would start with cylinder packing. There is usually no repair for a valve unless it is just external leaks, most valve spools are fitted to the valve bore, no internal seals on the spools. The pump won't affect the blade drifting down as the control valve is between the pump and cylinder.

The size (volume capacity) of the pump doesn't always equal or change the size of the reservoir. A pump can be able to pump more than the reservoir volume because the oil circulates. When you see a volume for a hydraulic system it is often the total volume (Cylinder, valves, lines, etc.) not just the reservoir. Often there are optional pumps, of varying volumes, based on the accessory equipment the machine will have or be used with.

If you are keeping this machine you might want to acquire the proper Operator's and Service manuals for it, if you don't have them. You might want a parts manual as well. Be sure to figure out your model for certain, as the manuals may be model specific.

The 7.5 Gls means the pump pumps 7.5 Gls a minute nothing to do with the capacity, once you fill it to the level it's ok,hydraulic oil 10W,the blade drifting down is probably the cylinder seals as they are wearing parts and need replaced from time to time.
AJ

Thanks Jim for the info....I read where one person sent a message and said that he was a rookie when it came to him knowing about his machine...WellI
am about below a rookie's knowledge about my machine. Every one that I have talked to about my machine calls it a International 500...Well my data
plate describes as an international 500 D 927...WHATEVER THE 927 means...The serial number is 1382 so I assume that it was manfactured in 1966..I have
a good running machine for its age..It has lots of aches and pains so I try to keep it repaired....I understand what you say about he oil gpm's..Just
did not want it to be starving for oil.. The dip stick says that it is full of oil...I cannot read the stick under the seat........ Once again thanks
for the information...............

Thanks A.J. for the info..I know that the cylinders leak and the pump growls at me Will be off to the machine shop Monday I understand about the
gpm flow Thanks again

How about posting a picture of your data plate, so people can see exactly what and how the info is on it.

If you don't get a true identity here you might try joining the Redpower Forum as well. That is a site primarily into IN crawlers. Get the correct identity of it so you can get the right manuals for it to guide you on maintenance, adjustments, and repairs.

IH crawlers, auto-correct strikes again.