Haole Cat, this tractor wouldn,t have a master clutch as they are a power shift tranmission and just a torque convertor where the clutch would normally be off the flywheel.

10-4, just goes to prove I don't know everything, I keep reminding myself of that! Lol! Sorry, just trying to help!

Ordered the seals today, I will get them in before the weekend is over and will let ya'll know how it turns out. This has been a priceless source of information!

Put all the seals in today. reinstalled the valve body. Started her up and I am now up to 155 PSI. Still got a major leak somewhere. I noticed that when the machine is of, the oil level is about 5 or 6 inches high. When you started, the pump seems to be dry and it takes about 20 or 30 seconds to build up the pressure. The oil level then goes back to about the full level. I have another 955l that does not fluctuate near this much.

Seems like there is a bad leak inside the trans and all the oil pours into the sump when its off. I think the tranny needs to come out and see me!

Not so fast Sid. You may have a suction line leak and the pump picking up air(slow to build pressure). If the pump pressure is holding with in 10% between high and low idle there is likely a pressure control problem in the trans pressure control pack(top section of the valve). If the pressure doesn't hold good between high and low idle(100 PSI diff) The new pump might be ruined by worn drive splines(can happen in a few hours). If splines are bad gear can be turned over. How is the modulation?(time to return to full pressure after a shift) 1to2 sec? Might have a broken spring or dirt in orifice causing it to stay on initial pressure. Trans oil normally drops when running, fill to full in neutral at low idle.
Later Bob

The pressure drops about 40 to 50 psi between high and low idle. That is around 35%. I check the pressure on the 955L I have that works and it had about 350 reguardless of RPM.

I checked for wear in the splines and could not measure any. The machine has only been ran a maximum of 15 minutes since the pump was changed.

I took the pressure regulator all apart and all seemed well but I am a novice with CATS. I went to block the machine up today and it would not pull itself up on the 12 inch blocks in F1.

I do not know the history of this machine. I bought it from a man for $1500.00. The engine is perfect. He said the machine was given to him when he retired from the company he worked for and it was like that then.. He tried to use it around the farm for 5 or 6 years in this weak condition.

I will look for suction leaks but I dont see a lot of air in the oil and the guage is pretty stable and the 150 PSI or so.

Sid, it's a lot of work but swap the pressure control valve from your other machine and see what pressure you get. Think it's in the top valve pack.
Later Bob

My hat is off to you! I swapped the pressure valve from a parts machine I have sitting in the woods and fired her up.. I had a 300 PSI guage on it and I think I destroyed my guage. Well over 300 PSI and drove like a dream. Has all 3 speeds and F/R. Good and stong, did a little brush pile pushing and all went well.

We went through the pressure group but did not see a problem. I will go back through it just to see if I can find what I missed.

I still have work to do like fixing leaks, the guage does wiggle a bit like it has some suction leaks, replace all the guages in the dash, etc. It does look like the worst may be over. I will use it lightly some this week to see if any other transmission problems surface.

Thanks a bunch!!!!!!!!!!

Very Good Sid email me <a href="This email address is being protected from spambots. You need JavaScript enabled to view it." target="_blank">This email address is being protected from spambots. You need JavaScript enabled to view it.. I will try to look up a good parts dwg of the pressure control pack. With that you can verify what IS in the right place and what Is Not. Please include the part# on the circular tag rivited to your PC pack.
Later Bob

Hey Bob, I could not get that email to work. I took the defective valve body apart and could not see any visible problem. Have not went over it with a micrometer or measured the pressure of the springs but that may be next. I guess someone before me could have taken it apart and put it back together wrong. I am putting it back together the way I find it so if its in there wrong, I am putting it back in wrong.

I have the machine running well with the reg pack that is in it now and will use it this weekend pushing up brush piles, etc, just to warm everthing up and see how it holds up. They guy that had it before me had let every guage on the dash go bad. So, first order of business is to get all the guages back up to speed. At this point, I have no way to monitor torque converter temp.

Right now my pressure is 350 or higher. Speeds are solid and the machine will turn on a dime.