Case 770 Powershift

[Semerod Farm]

I have posted a thread a while ago called “Case 770 PS boy this is gonna be a long one” about tranny issues with my 770 so if you want caught up go look for it. Valve body is fully rebuilt and clean and the spools move good. It works a lot better than it did before since the dealer forgot to put the cold oil reliefs back into the filters when they changed them so the oil wasn’t getting filtered and clogging sh1t up.

So basically I need steered in the correct direction
The tractor upon startup works fine in ps 1 and reverse but when you shift up to ps 2 or 3 it will stop/freewheel for about 20-30 second and then it will take of and work in all the powershifts. Except for ps2. I can stall it out with the brakes in reverse ps1 and ps3 but ps2 slips real bad. I can’t find anything online about this issue.

I know everyone it gonna tell me I need to pressure test it but the only case guy anywhere close to here doesn’t mess with powershift transmissions. I don’t have the stuff to do it but I do know that the pto gets a little weaker not very noticeable but the remotes will not work at all in ps2.

That kinda leads me to think that I have an internal leak and the flow divider is pushing all the fluid into the clutches in ps2 and that’s why my remotes don’t work in that powershift.

Just lmk what you think if you wanna make me sound like an idiot be my guest lol. I know how these transmissions work I just don’t really feel like splitting a tractor right now I have plenty other tractors so I’m not in a hurry to get the 770 going. Also is brought to my attention that someone from the last thread called my grandpas landline and left me a number but I honestly lost the number. Iwould have called if I still had the number.

 

[mEl]

Sounds like a C3 problem but my stock advice in any of these problems is a flow test to Isolate clutch leakage problems. that your hydraulics are not working in certain ranges is an indication of clutch leakage. Gut feeling from your text is a problem with C3 clutch or its circuit.

 

[Don L.]

I have a complete 8 speed rear end if needed 507 433 0073

 

[Semerod Farm]

Sounds like a C3 problem but my stock advice in any of these problems is a flow test to Isolate clutch leakage problems. that your hydraulics are not working in certain ranges is an indication of clutch leakage. Gut feeling from your text is a problem with C3 clutch or its circuit.

Ok I had a bunch of data on the trans and how it worked in different conditions in my phone that I read over last night and I did diagnose it as C3 leakage so I guess I wasn’t far off. Logan

 

[Semerod Farm]

I have a complete 8 speed rear end if needed 507 433 0073

Where is it located at I’m in western pa

 

[Don L.]

Where is it located at I’m in western pa

Austin MN ... I have a trucker friend out your way . 507 433 0073

 

[RGMartin]

Its funny how those of us in western PA identify as being from western PA, and not just PA... I'm in Mercer county and have a 770 also.

 

[Semerod Farm]

Its funny how those of us in western PA identify as being from western PA, and not just PA... I'm in Mercer county and have a 770 also.

Haha I know right. I really do want to get the 770 going because it’s such a good size tractor for what I do. I have an 870 also but it’s got oversize tires on it so it’s kinda tall.