Case 570B Back Hoe Hydraulic Pump

hotrodpc · 05-10-2009, 08:35 AM

Anyone know anythnig about rebuilding a pump off of a 570B Case Back Hoe? I do not have alot of experience working on tractors, but I have done quite a bit to these 2 family tractors we have. A Massey Ferg 65 and Case 570B. The oil in the crankcase seems to be full of some kind of clear oily liquid, and the hydraulic oil keeps getting low. I am making a guess that the hyd pump is leaking fluid into the crankcase. We are not running the Hoe being we recently rebuilt the motor. Any suggestions or ideas would be great if anyone has experience on this unit.

leolkfrm · 05-10-2009, 10:46 AM

I ordered manuals for my international from these people, it has helped, spent about $100 but it has proved worth it
YT Catalog Search

I got both service and part manuals and use both when repairing it

semocoachworks · 05-10-2009, 12:35 PM

Hey hotrod, your hyd pump should have no way of leaking into the crankcase. Your pump will have a seal at the input shaft and i don't see anyway hydraulic oil could get into the engine. I have a horizontal drill tore down right now that has diesel leaking into the crankcase because of bad injectors/broken ring. Maybe check to see if it is diesel in the oil. You could do a compression test on the cylinders and see if you have a leak. Any smoke? Miss? Do you have any other leaks that would cause hyd oil to be low?

semocoachworks · 05-10-2009, 12:38 PM

Depending on the year, it may have an oil cooler and hyd oil cooler in one cell that might possibly be cross-contaminating??? This is rare but it can happen.

hotrodpc · 05-10-2009, 12:56 PM

That is what I was thinking too semo. I have not looked at it myself yet. It is at my dads on the property and he had guy "look" at it and he said its probably that pump, so my dad is beating me up asking me to come do it. You are right about the manual Leo, I think my dad has already paid $100 for a complete service manual on this thing, so I will look at it first and see what I can figure out. Thanks for the tips, anyone else have any, feel free to post suggestions. I will check them all out. And Yes, it does have other hyd leaks that could be causing the fluid to get low. They are not bad, but there are serveral leaks and they add up. This is my dads equipment and he is not the sharpest when it come to mechanical stuff. He can swing a 32oz hammer, use a saw and and even cut circles with a wormdrive skill saw to build concrete parking stuctures, and grow a tomoto plant 10 foot tall, but when it comes to mechanics, he can't change an air filter on a Briggs and Straton lawn mower.

semocoachworks · 05-10-2009, 01:05 PM

When you take a look, keep us updated. I'll look at work and see if I have anything on the Case. If I have anything I'll do my best to help ya out.

hotrodpc · 05-10-2009, 01:26 PM

Cool, Thanks. I sure do not consider myself a mechanic on these tractors, but if I can figure them out, I make a good parts changer. We had a "tractor mechanic" over several times working on the Massey 65 for a failed PTO. That guy came over after every day for a week changing ****. I even ordered a new internal sleeve and piston for the hyd pump system. That was some money, but not the problem either. Then the guy never came back with the core and moved out of state. It was a good thing too or me may have had an *** beatin coming. I ended up putting all that back together myself after trial and error. Did a bit more research and found it was actually likley the clutch and nothing to do with hydraulics at all. The drive clutch worked great so he did not think that was it. Come to find out it has a dual clutch, 1 for PTO and 1 for drive. So feeling energetic and wanting this freakin tractor out of my driveway and back out at the property, I split the tractor. Back half hanging from an engine hoist, front half on a floor jack. The PTO clutch was shredded like roast beef. Would have made some great taco's. So after spending $400 in parts that was NOT the problem, I took the clutch and pressure plate to a local rebuilder here in town, and they rebuilt and relined my parts for $80 and loaned me the alignment tool for nothing, and that tractor was running great, until we decided to in frame bebuild the motor, w valve job and now it runs like new.

hotrodpc · 05-10-2009, 01:36 PM

I just talked to my dad, he says its not the hyd pump that needs looked at, it is the diesel pump, so I guess that would make more sense. He says he can't remember if was missing or smoking. He just shut it down becuase he has clear liquid coming out of the hose that runs along side the block that he thinks is the crankcase breather. He pulled the dipstick and it is full to the top with some form of clear liquid. Also to note, he had his neighbor rebuild the motor. I was going to do it, but its an hour drive to get out there each way to and from. So my dad got impatient and let the neighbor do it. I told him to get it magged and hot tanked since it was out of the hoe. The neighbor told him industrial engines don't crack so no need to do that and delay us 2 days on the rebuild. BS, with the cost of those parts, I would have spent the $40 for a hot tank and magnaflux. After about an hour of use, it got water in the oil, so they took the head off and found out the head gasket was not right or not installed right, I will never get the truth on that since I told my dad to wait for me and he didn't. Now since that fix, it has about 3 or 4 hours use on it and has this problem. I have a feeling this problem is also a result of the rebuild done improperly. The bad thing is, I can take stuff apart and put it back together fine, but coming in after someone elses mess really sucks, and not having the experience myself, it will be a challenge. I also verified with my dad about the service manual. Yes he has one. I told him I want to study that first. He acted as if its gold and not sure he wants me to study it or him give up the book for a few days. LOL. I figured I would at least familiarize myself a bit before I got started or look for a trouble shooting section. If you can't tell, the other 2 people he has had work on this equipemnt have not done so well, and when he finally gives up, I end up being the one to clean up their messes. You'd think he can see the pattern there and just be patient and let me get to it when I can. I'm telling you, you think raising kids is tough??? Parents are even tougher !!!

semocoachworks · 05-10-2009, 05:41 PM

If the crankcase is filling up and it's not diesel, it's almost got to be coolant. Maybe the head gasket failed again? Let me know your findings and i can probably help you. If the injectors are bad, the pump could very well have issues too. The pump will build pressure trying to push fuel through clogged injectors and could blow a seal,o-ring, or diaphram. Keep us informed.

hotrodpc · 05-10-2009, 09:58 PM

I am farily positive its not water this time. It is a clear oily liquid with black runs in it which is the motor oil, so I am assuming whatever it is, its not mixing with that the motor oil which water would eventually do and make that nasty looking mayonaise stuff. We don't have any of that forming anywhere, dipstick, filler cap or coming out of the crankcase vent. Likely the diesel fuel as you suggest. I hope to be out there to look at it Tues or Wed. You other suggestion makes sense too, about the clogged injectors.

05-10-2009, 08:35 AM	#1
hotrodpc Senior Member Join Date: Jul 2008 Location: OKC, OK Posts: 3,137	Case 570B Back Hoe Hydraulic Pump Anyone know anythnig about rebuilding a pump off of a 570B Case Back Hoe? I do not have alot of experience working on tractors, but I have done quite a bit to these 2 family tractors we have. A Massey Ferg 65 and Case 570B. The oil in the crankcase seems to be full of some kind of clear oily liquid, and the hydraulic oil keeps getting low. I am making a guess that the hyd pump is leaking fluid into the crankcase. We are not running the Hoe being we recently rebuilt the motor. Any suggestions or ideas would be great if anyone has experience on this unit.

05-10-2009, 10:46 AM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	I ordered manuals for my international from these people, it has helped, spent about $100 but it has proved worth it YT Catalog Search I got both service and part manuals and use both when repairing it __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

05-10-2009, 12:35 PM	#3
semocoachworks Senior Member Join Date: May 2009 Location: rapid city, sd Posts: 422	case backhoe Hey hotrod, your hyd pump should have no way of leaking into the crankcase. Your pump will have a seal at the input shaft and i don't see anyway hydraulic oil could get into the engine. I have a horizontal drill tore down right now that has diesel leaking into the crankcase because of bad injectors/broken ring. Maybe check to see if it is diesel in the oil. You could do a compression test on the cylinders and see if you have a leak. Any smoke? Miss? Do you have any other leaks that would cause hyd oil to be low?

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05-10-2009, 12:38 PM	#4
semocoachworks Senior Member Join Date: May 2009 Location: rapid city, sd Posts: 422	Depending on the year, it may have an oil cooler and hyd oil cooler in one cell that might possibly be cross-contaminating??? This is rare but it can happen.

05-10-2009, 12:56 PM	#5
hotrodpc Senior Member Join Date: Jul 2008 Location: OKC, OK Posts: 3,137	That is what I was thinking too semo. I have not looked at it myself yet. It is at my dads on the property and he had guy "look" at it and he said its probably that pump, so my dad is beating me up asking me to come do it. You are right about the manual Leo, I think my dad has already paid $100 for a complete service manual on this thing, so I will look at it first and see what I can figure out. Thanks for the tips, anyone else have any, feel free to post suggestions. I will check them all out. And Yes, it does have other hyd leaks that could be causing the fluid to get low. They are not bad, but there are serveral leaks and they add up. This is my dads equipment and he is not the sharpest when it come to mechanical stuff. He can swing a 32oz hammer, use a saw and and even cut circles with a wormdrive skill saw to build concrete parking stuctures, and grow a tomoto plant 10 foot tall, but when it comes to mechanics, he can't change an air filter on a Briggs and Straton lawn mower.

05-10-2009, 01:05 PM	#6
semocoachworks Senior Member Join Date: May 2009 Location: rapid city, sd Posts: 422	When you take a look, keep us updated. I'll look at work and see if I have anything on the Case. If I have anything I'll do my best to help ya out.

05-10-2009, 01:26 PM	#7
hotrodpc Senior Member Join Date: Jul 2008 Location: OKC, OK Posts: 3,137	Cool, Thanks. I sure do not consider myself a mechanic on these tractors, but if I can figure them out, I make a good parts changer. We had a "tractor mechanic" over several times working on the Massey 65 for a failed PTO. That guy came over after every day for a week changing **. I even ordered a new internal sleeve and piston for the hyd pump system. That was some money, but not the problem either. Then the guy never came back with the core and moved out of state. It was a good thing too or me may have had an * beatin coming. I ended up putting all that back together myself after trial and error. Did a bit more research and found it was actually likley the clutch and nothing to do with hydraulics at all. The drive clutch worked great so he did not think that was it. Come to find out it has a dual clutch, 1 for PTO and 1 for drive. So feeling energetic and wanting this freakin tractor out of my driveway and back out at the property, I split the tractor. Back half hanging from an engine hoist, front half on a floor jack. The PTO clutch was shredded like roast beef. Would have made some great taco's. So after spending $400 in parts that was NOT the problem, I took the clutch and pressure plate to a local rebuilder here in town, and they rebuilt and relined my parts for $80 and loaned me the alignment tool for nothing, and that tractor was running great, until we decided to in frame bebuild the motor, w valve job and now it runs like new.

05-10-2009, 01:36 PM	#8
hotrodpc Senior Member Join Date: Jul 2008 Location: OKC, OK Posts: 3,137	I just talked to my dad, he says its not the hyd pump that needs looked at, it is the diesel pump, so I guess that would make more sense. He says he can't remember if was missing or smoking. He just shut it down becuase he has clear liquid coming out of the hose that runs along side the block that he thinks is the crankcase breather. He pulled the dipstick and it is full to the top with some form of clear liquid. Also to note, he had his neighbor rebuild the motor. I was going to do it, but its an hour drive to get out there each way to and from. So my dad got impatient and let the neighbor do it. I told him to get it magged and hot tanked since it was out of the hoe. The neighbor told him industrial engines don't crack so no need to do that and delay us 2 days on the rebuild. BS, with the cost of those parts, I would have spent the $40 for a hot tank and magnaflux. After about an hour of use, it got water in the oil, so they took the head off and found out the head gasket was not right or not installed right, I will never get the truth on that since I told my dad to wait for me and he didn't. Now since that fix, it has about 3 or 4 hours use on it and has this problem. I have a feeling this problem is also a result of the rebuild done improperly. The bad thing is, I can take stuff apart and put it back together fine, but coming in after someone elses mess really sucks, and not having the experience myself, it will be a challenge. I also verified with my dad about the service manual. Yes he has one. I told him I want to study that first. He acted as if its gold and not sure he wants me to study it or him give up the book for a few days. LOL. I figured I would at least familiarize myself a bit before I got started or look for a trouble shooting section. If you can't tell, the other 2 people he has had work on this equipemnt have not done so well, and when he finally gives up, I end up being the one to clean up their messes. You'd think he can see the pattern there and just be patient and let me get to it when I can. I'm telling you, you think raising kids is tough??? Parents are even tougher !!!

05-10-2009, 05:41 PM	#9
semocoachworks Senior Member Join Date: May 2009 Location: rapid city, sd Posts: 422	If the crankcase is filling up and it's not diesel, it's almost got to be coolant. Maybe the head gasket failed again? Let me know your findings and i can probably help you. If the injectors are bad, the pump could very well have issues too. The pump will build pressure trying to push fuel through clogged injectors and could blow a seal,o-ring, or diaphram. Keep us informed.

05-10-2009, 09:58 PM	#10
hotrodpc Senior Member Join Date: Jul 2008 Location: OKC, OK Posts: 3,137	I am farily positive its not water this time. It is a clear oily liquid with black runs in it which is the motor oil, so I am assuming whatever it is, its not mixing with that the motor oil which water would eventually do and make that nasty looking mayonaise stuff. We don't have any of that forming anywhere, dipstick, filler cap or coming out of the crankcase vent. Likely the diesel fuel as you suggest. I hope to be out there to look at it Tues or Wed. You other suggestion makes sense too, about the clogged injectors.