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Case Tractors Discussion Forum
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Re: Case 870 hydraulic and shifting problems

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brokengun

05-06-2013 11:04:43
4.252.27.127



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I have a feeling that you have a clutch or fiber disk failure and the screen to the pump is plugged.

Normally you need to do a pressure check/flow test on the PS/hyd system to determine the problem

What type of oil did you use when you changed it?

I once changed oil in a cherry 1370 and the oil I used dissolved the glue underneath the fiber disk plates and plugged up the oil intake screen.

P.S> An 870 is worth fixing so if you do have a major problem please consider fixing it

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John Saeli

05-06-2013 12:55:17
66.66.16.240



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 Re: Case 870 hydraulic and shifting problems in reply to brokengun, 05-06-2013 11:04:43  
Curious as to what oil you used that disolved the glue holding the fiber on. All the major brand oils say they are compatible w/ CASE-IH, but contributors to this forum have had other experience.



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brokengun

05-07-2013 00:04:12
4.252.135.107



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 Re: Case 870 hydraulic and shifting problems in reply to John Saeli, 05-06-2013 12:55:17  
Marathon 577 was the oil i used. It eat the glue right out from under the plates the fiber disk peeled like the skin on an onion.

The C4 plate fiber disk was very close to like new thickness when they failed.

In the end I split that tractor 4 times before i got everything fixed. Every disk except the TLC failed.

The only reason the TLC didnt fail was because the guy that owned the tractor before me put a NEW case rebuilt engine and a new TLC at the same time

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mEl

05-06-2013 14:46:52
96.249.137.235



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 Re: Case 870 hydraulic and shifting problems in reply to John Saeli, 05-06-2013 12:55:17  

John Saeli said: (quoted from post at 12:55:17 05/06/13) Curious as to what oil you used that disolved the glue holding the fiber on. All the major brand oils say they are compatible w/ CASE-IH, but contributors to this forum have had other experience.


The 870 has external dry brakes, no diff lock and unless someone has had it apart and put new C4 stuff in it should have all sintered brass clutch plates in it. I'm not saying that could not have been done but all 70 series of that vintage had sintered brass plates, including the large C4 plate, not till much later was the gray fibre plates used and I'm not sure the others were ever subed to the early tractors, the fact that the failure is heat related leads me to believe you have pump wear. Pay a competent shop to perform a flo test on the system, with one hookup right at the remotes the entire system can be diagnosed including the power shift clutch leakage. Anything else is speculation. . mEl
This post was edited by mEl at 14:48:11 05/06/13.

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Troy Warnken

05-06-2013 11:12:57
155.91.45.231



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 Re: Case 870 hydraulic and shifting problems in reply to brokengun, 05-06-2013 11:04:43  
I used Ultra Tran from the local Case dealer. The pressure was better today than yesterday on the gauge. Do you think I need to bleed the brake system it said to do that on the directions when I changed the filters but the dealer didnt think I needed to.



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