IH 574 PTO slows under load

I have an IH 574 that worked all through the hay season but after bush hogging a couple of fields, the PTO stated slowing and stopping when under load.

I replaced the hydralic filter and replaced all the Hy-Tran fluid but I'm still having the same issue. Now I'm worried that we ran the clutch pack dry and burned them up. I'm not sure how big of a job or how expensive that job will be.

One side note, I'm having a small leak at the steering controller. It's annoying but I don't think it is causing the problem.

Any feed back would be great, thanks.

Hi Bwholl, I would check the simple things first,
the PTO lever engagement mechanism. Check for
sticks and other debris that may have fallen down
at back of seat and around PTO lever. Next with
your favorite penetrating oil lube all the PTO
lever mechanism from the lever all the way over to
behind you left heel were it pulls a hydraulic
control valve on top of the MCV valve. There is a
rubber boot over the PTO valve, carefully pry that
up and squirt some penetrating oil under the boot
while working the PTO lever ON and Off.
If that doesn't fix the PTO problem, then a
hydraulic pressure gauge with proper fitting is
required to check PTO clutch hydraulic pressure.

JimB

(quoted from post at 03:33:18 10/22/12) Hi Bwholl, I would check the simple things first,
the PTO lever engagement mechanism. Check for
sticks and other debris that may have fallen down
at back of seat and around PTO lever. Next with
your favorite penetrating oil lube all the PTO
lever mechanism from the lever all the way over to
behind you left heel were it pulls a hydraulic
control valve on top of the MCV valve. There is a
rubber boot over the PTO valve, carefully pry that
up and squirt some penetrating oil under the boot
while working the PTO lever ON and Off.
If that doesn't fix the PTO problem, then a
hydraulic pressure gauge with proper fitting is
required to check PTO clutch hydraulic pressure.

JimB

Click to expand...

I'll give it a try. i'mstill worried I burnt or glazed the clutch plates, the PTO comes up to speed but it seems like it takes it a second or two.

BTW, when I changed the hydralic filter it was black. The fluid is nice and clear on the dipstick.

One other question, I saw in the service manual that to check the fluid level, "run the tractor for a couple of minutes and then check it when the tactor is running". Is the right?

Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

The parking brake has never really worked and right now I just noticied the parking brake lock doesn't work. I never trusted in when I got off with the tractor running and I feel better looking at the baler when it is stopped.

(quoted from post at 07:45:45 10/22/12) Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

Click to expand...

Hopefully I can get to it this weekend and check the easy stuff. I'm hoping it just some junk stuck near the valve. We have been cleaning up from two tornados in less that 12 months.

If that doesn't work I'm going to pull the ipto clutch pack out and see what is up with it. I was hoping to have the parts but I see that it can either be a 6 or 8 plate. While I'm up to my elbows in Hy-Tran it will be a good time to rebuild the leaking steering contoller and try to address any other leaks ( and there are a few).

(quoted from post at 19:02:02 10/24/12)

(quoted from post at 07:45:45 10/22/12) Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

Click to expand...

Hopefully I can get to it this weekend and check the easy stuff. I'm hoping it just some junk stuck near the valve. We have been cleaning up from two tornados in less that 12 months.

If that doesn't work I'm going to pull the ipto clutch pack out and see what is up with it. I was hoping to have the parts but I see that it can either be a 6 or 8 plate. While I'm up to my elbows in Hy-Tran it will be a good time to rebuild the leaking steering contoller and try to address any other leaks ( and there are a few).

Click to expand...

You really need to check the PTO circuit, both the entire circuit and deadheaded at the MCV outlet, with a gauge before repairing the clutch pack.

One tractor I worked on that had a similar symptom to yours had a gasket blown in the MCV that prevented PTO pressure from building completely.

(quoted from post at 14:59:19 10/25/12)

(quoted from post at 19:02:02 10/24/12)

(quoted from post at 07:45:45 10/22/12) Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

Click to expand...

Hopefully I can get to it this weekend and check the easy stuff. I'm hoping it just some junk stuck near the valve. We have been cleaning up from two tornados in less that 12 months.

If that doesn't work I'm going to pull the ipto clutch pack out and see what is up with it. I was hoping to have the parts but I see that it can either be a 6 or 8 plate. While I'm up to my elbows in Hy-Tran it will be a good time to rebuild the leaking steering contoller and try to address any other leaks ( and there are a few).

Click to expand...

You really need to check the PTO circuit, both the entire circuit and deadheaded at the MCV outlet, with a gauge before repairing the clutch pack.

One tractor I worked on that had a similar symptom to yours had a gasket blown in the MCV that prevented PTO pressure from building completely.

Click to expand...

I'm looking at the parts breakdown from the CNH website and I didn't see any gaskets but there sure are a lot of o-rings. Could I just take all the valves off one at a time an clean, inspect and replace all the o-rings? Could this be done without removing the MCV from the tractor?

(quoted from post at 07:27:07 10/25/12)

(quoted from post at 14:59:19 10/25/12)

(quoted from post at 19:02:02 10/24/12)

(quoted from post at 07:45:45 10/22/12) Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

Click to expand...

Hopefully I can get to it this weekend and check the easy stuff. I'm hoping it just some junk stuck near the valve. We have been cleaning up from two tornados in less that 12 months.

If that doesn't work I'm going to pull the ipto clutch pack out and see what is up with it. I was hoping to have the parts but I see that it can either be a 6 or 8 plate. While I'm up to my elbows in Hy-Tran it will be a good time to rebuild the leaking steering contoller and try to address any other leaks ( and there are a few).

Click to expand...

You really need to check the PTO circuit, both the entire circuit and deadheaded at the MCV outlet, with a gauge before repairing the clutch pack.

One tractor I worked on that had a similar symptom to yours had a gasket blown in the MCV that prevented PTO pressure from building completely.

Click to expand...

I'm looking at the parts breakdown from the CNH website and I didn't see any gaskets but there sure are a lot of o-rings. Could I just take all the valves off one at a time an clean, inspect and replace all the o-rings? Could this be done without removing the MCV from the tractor?

Click to expand...

Gasket p/n 253547A1 is the one that can fail and cause internal leakage in the PTO circuit.. (original p/n is 65000C2)

Find gaskets on 10-01 and 10-03.

(quoted from post at 04:40:37 10/26/12)

(quoted from post at 07:27:07 10/25/12)

(quoted from post at 14:59:19 10/25/12)

(quoted from post at 19:02:02 10/24/12)

(quoted from post at 07:45:45 10/22/12) Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

Click to expand...

Hopefully I can get to it this weekend and check the easy stuff. I'm hoping it just some junk stuck near the valve. We have been cleaning up from two tornados in less that 12 months.

If that doesn't work I'm going to pull the ipto clutch pack out and see what is up with it. I was hoping to have the parts but I see that it can either be a 6 or 8 plate. While I'm up to my elbows in Hy-Tran it will be a good time to rebuild the leaking steering contoller and try to address any other leaks ( and there are a few).

Click to expand...

You really need to check the PTO circuit, both the entire circuit and deadheaded at the MCV outlet, with a gauge before repairing the clutch pack.

One tractor I worked on that had a similar symptom to yours had a gasket blown in the MCV that prevented PTO pressure from building completely.

Click to expand...

I'm looking at the parts breakdown from the CNH website and I didn't see any gaskets but there sure are a lot of o-rings. Could I just take all the valves off one at a time an clean, inspect and replace all the o-rings? Could this be done without removing the MCV from the tractor?

Click to expand...

Gasket p/n 253547A1 is the one that can fail and cause internal leakage in the PTO circuit.. (original p/n is 65000C2)

Find gaskets on 10-01 and 10-03.

Click to expand...

I see it now. I just need to figure out which the Europe or North America gasket. Europe is 6500C1 and North America is 6500C2. How do I tell other than pull it apart and compare the drawings?

(quoted from post at 17:43:06 10/25/12)

(quoted from post at 04:40:37 10/26/12)

(quoted from post at 07:27:07 10/25/12)

(quoted from post at 14:59:19 10/25/12)

(quoted from post at 19:02:02 10/24/12)

(quoted from post at 07:45:45 10/22/12) Hi, re hydraulic fluid level, yes run tractor for a
few minutes at fast idle then check level.
Re black filter, does the parking brake still work?
The black can be chewed up parking brake band or PTO
clutch.

JimB

Click to expand...

Hopefully I can get to it this weekend and check the easy stuff. I'm hoping it just some junk stuck near the valve. We have been cleaning up from two tornados in less that 12 months.

If that doesn't work I'm going to pull the ipto clutch pack out and see what is up with it. I was hoping to have the parts but I see that it can either be a 6 or 8 plate. While I'm up to my elbows in Hy-Tran it will be a good time to rebuild the leaking steering contoller and try to address any other leaks ( and there are a few).

Click to expand...

You really need to check the PTO circuit, both the entire circuit and deadheaded at the MCV outlet, with a gauge before repairing the clutch pack.

One tractor I worked on that had a similar symptom to yours had a gasket blown in the MCV that prevented PTO pressure from building completely.

Click to expand...

I'm looking at the parts breakdown from the CNH website and I didn't see any gaskets but there sure are a lot of o-rings. Could I just take all the valves off one at a time an clean, inspect and replace all the o-rings? Could this be done without removing the MCV from the tractor?

Click to expand...

Gasket p/n 253547A1 is the one that can fail and cause internal leakage in the PTO circuit.. (original p/n is 65000C2)

Find gaskets on 10-01 and 10-03.

Click to expand...

I see it now. I just need to figure out which the Europe or North America gasket. Europe is 6500C1 and North America is 6500C2. How do I tell other than pull it apart and compare the drawings?

Click to expand...

Both numbers sub up to p/n 253547A1.

(quoted from post at 03:33:18 10/22/12) Hi Bwholl, I would check the simple things first,
the PTO lever engagement mechanism. Check for
sticks and other debris that may have fallen down
at back of seat and around PTO lever. Next with
your favorite penetrating oil lube all the PTO
lever mechanism from the lever all the way over to
behind you left heel were it pulls a hydraulic
control valve on top of the MCV valve. There is a
rubber boot over the PTO valve, carefully pry that
up and squirt some penetrating oil under the boot
while working the PTO lever ON and Off.
If that doesn't fix the PTO problem, then a
hydraulic pressure gauge with proper fitting is
required to check PTO clutch hydraulic pressure.

JimB

Click to expand...

It took awhile to get back to this but it appears the easy thing is the fix. I pulled the access panel off so I could actually see the MCV.

First off I have the remains of a rubber boot over the PTO valve, I guess need to order a new one. The first thing I noticed is that when the PTO was engaged the valve was not traveling as far down as before. I checked the manual and I should have been getting 1 3/16" of travel but I was getting only 3/4". I noticed there is some play in the cross shaft but I didn't see anything broken. I then adjusted the PTO lever to push it all the way down and that seems to have done the trick. I was able to bush-hog a 5 ac field. I'm not totally convinced and I need to find out when the play in the cross shaft from the lever is coming from.

There must have been much smaller people when these things were built. Getting access to anything requires smaller hands than I have and mine are not that big.

Thanks for the input and the suggestions.

As it turned out I finally pulled the MVC apart and the gasket was bad. While I had it apart and drained, I pulled the IPTO clutch out and rebuilt it. I glad I did, the clutch and the drive plates were in bad shape. Other that having to wait on parts a second time because whoever did the overhaul before swapped out the IPTO clutch pack and didn't put the same type back in. I had it all out and went to put the drive plates in and I had the six spring plates that should have gone into my tractor based on the SN but my clutch pack was a four spring version.

While it was all apart I took the time to rebuild my steering controller that was leaking and replace the gaskets on the PTO at the back.

Big test is tonight when I hook the baler up to bale some broken bales. I'm not expecting any issues.

Thanks to Joe at www.redrunrite.com for getting my parts swapped quickly.