IH 450 TRACTOR

rustred is correct. They both use Hytran fluid but the Hydraulics are not combined until later models. Jim
 
Did your tractor happen to set outside? Is the fluid
milky looking? Could have gotten water in it and now it
is overfull, most likely way water gets in is down the
gear shift. The level check plug is down by the clutch
pedal and in front of the left brake. Should not leak any
way, but would have to be overfull to continually leak
while sitting.
 
People are nit-picking. It's hydraulic fluid, in the transmission. Just not used for hydraulics on this tractor. Being in the transmission does not magically make the oil something else.

The oil level in the rear end of the tractor should not be high enough for oil to leak out the brake pinion shafts unless you're on an extreme side hill. So look at why your rear end is overfull. Water settles to the bottom so if you're careful you can drain the water off and only lose a little hydraulic fluid. Even genuiune Hy-Tran has its limits for water absorption.

The pinion shaft seals are not a crisis either. They can be changed from the outside by simply removing the brake housing, discs, and actuator. Some clever work with a slide hammer to pop the old seals out, and drive new ones in. No big deal.
 
(quoted from post at 15:51:31 04/13/23) People are nit-picking. It's hydraulic fluid, in the transmission. Just not used for hydraulics on this tractor. Being in the transmission does not magically make the oil something else.

The oil level in the rear end of the tractor should not be high enough for oil to leak out the brake pinion shafts unless you're on an extreme side hill. So look at why your rear end is overfull. Water settles to the bottom so if you're careful you can drain the water off and only lose a little hydraulic fluid. Even genuiune Hy-Tran has its limits for water absorption.

The pinion shaft seals are not a crisis either. They can be changed from the outside by simply removing the brake housing, discs, and actuator. Some clever work with a slide hammer to pop the old seals out, and drive new ones in. No big deal.
 
I checked it again and took the side plug out and it is over full of oil. I have put a lot of hydraulic oil in so some how it is going in the trans. how is that possible.
mvphoto104686.jpg
 
(quoted from post at 19:30:00 04/12/23) Did your tractor happen to set outside? Is the fluid
milky looking? Could have gotten water in it and now it
is overfull, most likely way water gets in is down the
gear shift. The level check plug is down by the clutch
pedal and in front of the left brake. Should not leak any
way, but would have to be overfull to continually leak
while sitting.


Just as much water gets into the housings of tractors that are shedded as it does the ones that aren't.
 
(quoted from post at 22:26:36 04/12/23) That would be hytran leaking out of the trans. Diff. Hyd.
Is a separate compartment.
I have been loosing hydraulic fluid by the gallons and no leaks so some how it is going in the trans and diff.
 
(quoted from post at 17:27:01 04/15/23)
(quoted from post at 22:26:36 04/12/23) That would be hytran leaking out of the trans. Diff. Hyd.
Is a separate compartment.
I have been loosing hydraulic fluid by the gallons and no leaks so some how it is going in the trans and diff.

Not possible unless someone did something very stupid with some extra hoses.

The hydraulic system is self-contained in the console under the steering wheel. There are two walls of solid steel between it and the transmission so there is just no direct way to get from one to the other.

Hydraulic oil can run into the engine through a bad seal in the hydraulic pump but there is no way for oil to get from the engine to the transmission.

By the looks of that oil you're draining out it is VERY water contaminated.

Where are you replacing the hydraulic oil that you're "losing by the gallons?" If you're dumping it in the transmission thinking you're filling the hydraulics, there is your source of overfilling.
 
(quoted from post at 13:56:43 04/16/23)
(quoted from post at 17:27:01 04/15/23)
(quoted from post at 22:26:36 04/12/23) That would be hytran leaking out of the trans. Diff. Hyd.
Is a separate compartment.
I have been loosing hydraulic fluid by the gallons and no leaks so some how it is going in the trans and diff.

Not possible unless someone did something very stupid with some extra hoses.

The hydraulic system is self-contained in the console under the steering wheel. There are two walls of solid steel between it and the transmission so there is just no direct way to get from one to the other.

Hydraulic oil can run into the engine through a bad seal in the hydraulic pump but there is no way for oil to get from the engine to the transmission.

By the looks of that oil you're draining out it is VERY water contaminated.

Where are you replacing the hydraulic oil that you're "losing by the gallons?" If you're dumping it in the transmission thinking you're filling the hydraulics, there is your source of overfilling.
 
I pulled Hydraulic pump and changed the seal now it back fires when I try to start it what did I do wrong timing must be off where do I start!
 
(quoted from post at 01:34:12 09/22/23) I pulled Hydraulic pump and changed the seal now it back fires when I try to start it what did I do wrong timing must be off where do I start!
Did you time the pump drive gear properly when you put it back in? Also, the distributor drive can be put in two ways one of them would be 180 out. You should have had the rotor pointed to number 1 cap terminal before you pulled it apart. If you did no timing of the pump gear you will have to run it up on TDC of compression on cylinder 1. If you did time the pump gear unbolt the distributor and turn it 180 and reinstall.
 
(quoted from post at 00:41:54 09/22/23)
(quoted from post at 01:34:12 09/22/23) I pulled Hydraulic pump and changed the seal now it back fires when I try to start it what did I do wrong timing must be off where do I start!
Did you time the pump drive gear properly when you put it back in? Also, the distributor drive can be put in two ways one of them would be 180 out. You should have had the rotor pointed to number 1 cap terminal before you pulled it apart. If you did no timing of the pump gear you will have to run it up on TDC of compression on cylinder 1. If you did time the pump gear unbolt the distributor and turn it 180 and reinstall.
 

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