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Discussion Starter #1
I have removed all Cap bolts on my Gas IH 424 Hydraulic Reservoir. I have tried lifting it off with a hoist but reservoir will not loosen. Reservoir is located under seat and on top of transmission.
Does the reservoir fit down into tyranny housing (say 1/4 inch) or does it sit on top of tyranny housing?
Any ideas on how to remove reservoir so I can get into transmission unit.
 

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Hi oldman!!! Welcome to TF.com!!:friends:

I haven't been into a 424, but I believe they have the same transmision as a 444. The hyd unit sits on top of the transmision housing with no flange down into the case.There are 2 or 3 bolts across the front of the housing under the valve body that are hard to see, you usually have to dig a whole bunch of dirt off them to find them. The unit often bonds pretty well to the gasket, and sits on 2 dowels also which tend to stick. I generally unfasten the vertical lift arms and give a few good hard tugs up on the arms of the unit to break it loose.


Hope this helps!!

Good luck, let us know how you make out.:)
 

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Reply to TF.com

Thanks.
I will look again closely, but I have removed all I have seen. I have yanked with a hoist, but it doesn't giive. It's as if there are bollts not removed or the unit is severely stuck on the transmission housing. Do you have any idea how much this reservoir weights? The reason I need too remove this unit is that I have a leaking rear axle seal. According to the book you have to remove a keeper key inside the transmission housing.
Also I have a leak around the differential clutch housing thats bolts on to transmission housing. I have removed brake assembly with clutch pedal. This leaves a splined shaft coming out of another housing bolted onto the tyranny. Can I remove this and replace the seals with no problem, or is this housing a support for the splined shaft?
Thanks for your help.
 

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The hydraulic units usually stick down pretty hard, I expect they bind on the dowel pins. As I mentioned, I give them quite a snap up on the lift arms to break them loose. You could also try prying between the valve body and the shifter cover. But be sure you do have all the bolts out. Look very closely along the front under the valve body.

The seal you are talking about on the side of the differential case, I believe, is the bull pinion shaft housing ( the shaft the brakes run off of). To replace this seal you have to remove the rear axle on that side, the PTO shaft, and the bull gear for that side. You will then have to remove a circlip from the end of the differential lock shaft, it is under an 1 1/2" long retainer at the outer end of the shaft. The retainer is spring loaded, I use vise grips to push it in, and a screw driver to pry out the circlip. You need about 3 hands to do this and have room for about 1! Unbolt the bull pinion shaft housing, and the housing and shaft should come out as an assembly. The inner bearing of the shaft is pressed into the case, but will come out with a light tap. You should then be able to get to the seal that needs to be replaced.
Good luck, and let us know how you are making out.:thumbsup:
 

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Discussion Starter #5
Reply to parts man

I think the seal you are referring to is aroung the splined shaft itself. It appears that most of the fluid is coming from around the shaft housing that is bolted (with embedded bolts) onto the outside of the Tyranny. Can I remove these bolts and slide the housing off of the splined shaft and replace a gasket behind this housing?
Thanks.
 

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Sorry, yes I thought you meant the seal around the spined shaft.:eek:

The bearing toward the differential on the slined shaft is lightly pressed into that casting. It should come out alright with out removing the splined shaft, but it may be a problem to get the bearing seated again properly. Also, to remove the casting you still have to take out the bull gear for that side as there is a lip of the casting to the inside of the bull gear. To remove the bull gear you must remove the PTO shaft. Once you've gone this far, it's not much extra to take the splined shaft out too, and make it easier to be sure the bearing is seated properly.


Have you been able to remove the hydralic unit yet:question:
 

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Discussion Starter #7
Reply to Parts man

I haven't gotten the Hydraulic unit off yet. I talked to a mechanic today. He says remove the control unit mounted on front of the reservoir and verify there are no bolts underneath. If not then tap lightly with a screw driver between reservoir and transmission housing. He says they can be stuck pretty hard together.
In regards to the spline brake shaft. on the housing that's bolted to the transmission unit (where the splined shaft comes out) is what I'm trying to get off because it seems the fluid is coming from the outside of the housing and not around the splined shaft.
I was trying to replace a gasket for the housing from the outside just in case I couldn't get the reservoir off.
Thanks any help is appreciated.
 

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The brake shaft housing can't come out until the bull gear is removed. That housing has a lip that runs to the inside of the bull gear. Trying to pry it out with out removing the bull gear breaks the brake shaft housing. We've sold quite a few because of that! The first step is to remove the hydraulic unit. There are 3 bolts across the front, 1 at each side, in about an 1"-1 1/2" from the edge, 1 near the middle front. All are accessable with out removing the control valve from the tank. The middle 1 is under the front edge of the control valve, but still on the outside flange of the tank.
 

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Discussion Starter #10
Reply to Parts Man

Thanks for the help and quick response. It good to get info from people who know. I'll try to get the reservoir off this weekend. Since it going to be cold down here (high 35, that's cold for us), I'm not sure how much I'll get done. Let you know how it turns out though.
Thanks.
 

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oldman, good luck!! Right now 35 would be very welcomed for us!! Most of January was at least -20 C!! It has moderated for Feb so far though, been about -5 to - 10 through the day and around -15 to -20 at night, basically normal for us!

As for insightful replies, you got lucky :lmao: you happened to pick a model I'm quite familiar with! We use a 444 and a 384, and have parted out some over 50 of those series tractors! They are very popular around here!!
 

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35 cold?????? We hit 32 yesterday, and are all walking around in shorts, and tee's. Been the coldest jan I remember. Not as bad as Partsman has it but we have been happy when it hits 20. Oh and the one day it hits over 30???? Snow, and ice..:mad: :mad: Is it spring yet?????
 

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Its spring here sun is shining:crazysun: and its 52deg a Beautiful day. I would be working in the yard but its to wet got about five inches of rain the last two days.:tellyou:
Jody
 

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If

Originally posted by jodyand
Its spring here sun is shining:crazysun: and its 52deg a Beautiful day. I would be working in the yard but its to wet got about five inches of rain the last two days.:tellyou:
Jody
52 and sunny! How can you stand it? I would have to go swimming and get a tan.:cool:
 

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when it hits -5 C here ( around 20 F) I dig out my shorts and go for a swim!!!

Not quite,,, but I do consider that all kinds warm enough to work outside our UNHEATED shop to take tractors apart.
 

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Discussion Starter #16
Well I finally got the hydraulic reservoir off of my IH-424. It was stuck really bad. Only one capscrew across front and that was next to hydraulic lines. Now it's time to do some useful.
Thanks for the help.
 

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That's good news!!! Glad it worked out for you!! Sometimes they really get glued down!! Were you able to repair the gaskets around the bull pinion carriers while you were at it?
 

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Discussion Starter #18
How do you remove Hydraulic Reservoir

Didn't get to anything else. It looks like every seal around there is leaking. That will be a weekend job.
Thanks.
 

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Discussion Starter #19
How do remove hydraulic reservoir

Well finally got the lock ring off that holds axles in. Made a tool for pushing axle out. Hadn't had a chance to work with it much.
Anyone know how these rear axles are normally removed on a IH-424?
Thanks,
Oldman
 

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Oldman, is that lock ring the one on the end of the axle housing with the 4 bolts in it?

There should also be a bolt in the centre of the axle on the inside end, remove it too. Then I use a 4LB hammer, and tap on the axle flange that the wheel bolts to, and tap it out. This ussually briings the outer bearing too, not always. Not a big deal either way. THere is also a spacer on the axle to the wheel end of the inner bearing. It will fall off inside the axle housing, make sure this is put back on when re-installing the axle.
 
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