How many hours is too much for a case ih 8950

Justin Walsh · Jun 24, 2013

I'm looking to buy one and I want to know some pros and cons of the tractor

Bob Bancroft · Jun 24, 2013

I have a 7240 and I think it's a great tractor. The only part I take issue with is the hyd. spool valve. You can adjust flow from the cab, but you can't get the detents to work at all speeds(engine) and pressures. I can see why they went to elec. over hyd. controls.
I believe the 89 series is the same.
A neighbor who goes to Midwest auctions let an 8950 go by in the $30,000's last winter because he didn't know what it was. GRRRRRRRR. (He's all green).

T in NE · Jun 25, 2013

Take a (150 PSI) tire gauge with you when you look at it. Under the skirting behind the steps you'll find a couple accumulators. If they are between 50 and 130 PSI there's no transmission worries. 30 is the "official" minimum before damage starts.

A friend who deals used equipment has 3 questions on a Magnum.
1 What are the accumulator pressures?
2 Will I need to paint it?
3 Will I need to put tires on it?

The only reason he wants to know hours is for pricing.

Jim Naden · Jun 26, 2013

(quoted from post at 20:56:55 06/25/13) Take a (150 PSI) tire gauge with you when you look at it. Under the skirting behind the steps you'll find a couple accumulators. If they are between 50 and 130 PSI there's no transmission worries. 30 is the "official" minimum before damage starts.

A friend who deals used equipment has 3 questions on a Magnum.
1 What are the accumulator pressures?
2 Will I need to paint it?
3 Will I need to put tires on it?

The only reason he wants to know hours is for pricing.

Testing the accumulators with a tire gauge will cause the pressure to drop noticeably every time you stick the gauge on there due to low volume capacity of the accumulator.

Where did your friend come up with the "30 is the "official" minimum before damage starts." BS?

Low accumulator pressure will not "damage" the transmission, it just won't work correctly (shift smoothly esp.6-7 and 12-13 shifts) until the accumulators are recharged or replaced if failed.

BTW, 135 psi @ 70 degrees F. is the proper charge for the accumulators. There is a pressure/temperature chart that should be used to get the optimal charge when recharging the accumulators. The higher the temperature at recharging the higher the charge pressure required.

T in NE · Jun 27, 2013

Running them too low for too long isn't good for things. 7250 I ran for a while with a dead accumulator had a lot of slippage in the upshifts. You don't check them every day, either, just when you notice odd shifting, or when you are going to look at buying it.

Jim Naden · Jun 28, 2013

(quoted from post at 20:01:04 06/27/13) Running them too low for too long isn't good for things. 7250 I ran for a while with a dead accumulator had a lot of slippage in the upshifts. You don't check them every day, either, just when you notice odd shifting, or when you are going to look at buying it.

They don't "slip" anything when the accumulators are low.

When there is insufficient oil left to make up or down shifts the flow sensor spool drops down and disengages the Master Clutch until pressure is built in all three transmission clutch circuits then M/C pressure will be available again. This can happen during multiple quick shifts, up or down, even if the accumulators are fully charged.
This feature is the main reason the Magnum transmissions survive as well as they do.

Charging the accumulators is a routine maintenance item, low charge is not indicative of an internal transmission problem in any way.

How many hours is too much for a case ih 8950

Justin Walsh

New User

Bob Bancroft

Well-known Member

T in NE

Well-known Member

Jim Naden

Member

T in NE

Well-known Member

Jim Naden

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