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Hydraulic Leak
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- 10+ Years
- Posts: 179
- Joined: Thu Oct 22, 2009 8:35 am
- Zip Code: 49057
- Location: SW Michigan
Hydraulic Leak
This leak started a few days ago. It seems to be dripping from the bottom of the hydraulic housing area.
What could be the reason for the leak?
Thanks,
Dell
- tmays
- 10+ Years
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- Joined: Wed May 11, 2011 8:59 pm
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- Tractors Owned: 1969 Farmall Cub
1952 Cub
1942 Farmall H - Location: Raymond, MS
Re: Hydraulic Leak
More than likely it's from the control valve. The small rod sticking out the front. Just needs oring replaced if that's the case. Can be done with unit on tractor. They are proud of that oring, however
Thomas
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- 10+ Years
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- Zip Code: 49057
- Location: SW Michigan
Re: Hydraulic Leak
I could not find the sevice manual for instructions on changing the control valve o-ring while on the tractor. But from reading other posts this is what I understand.
Drain the fluid.
Remove the pin.
Slide the control valve out forward.
Remove the old o-ring and install the new one.
Lube the o-ring.
Slide the control valve into place.
Install the pin.
Is that all there is to it? Will the control valve line up correctly and easily.
Is it necessary to drain fluid? What can go wrong.
Thanks,
Dell
Drain the fluid.
Remove the pin.
Slide the control valve out forward.
Remove the old o-ring and install the new one.
Lube the o-ring.
Slide the control valve into place.
Install the pin.
Is that all there is to it? Will the control valve line up correctly and easily.
Is it necessary to drain fluid? What can go wrong.
Thanks,
Dell
- tmays
- 10+ Years
- Posts: 3414
- Joined: Wed May 11, 2011 8:59 pm
- Zip Code: 39154
- Tractors Owned: 1969 Farmall Cub
1952 Cub
1942 Farmall H - Location: Raymond, MS
Re: Hydraulic Leak
Pretty much that easy. On draining the fluid-up to you. If you don't, some will come out when you remove valve. Not really a problem since it has been leaking already.
Lube the oring and shaft before putting oring on. Be very careful not to nick the oring
Edit: clean front of block really well before starting. I degrease and pressure wash before starting. Of course this is probably a given
Lube the oring and shaft before putting oring on. Be very careful not to nick the oring
Edit: clean front of block really well before starting. I degrease and pressure wash before starting. Of course this is probably a given
Thomas
-
- 10+ Years
- Posts: 179
- Joined: Thu Oct 22, 2009 8:35 am
- Zip Code: 49057
- Location: SW Michigan
Re: Hydraulic Leak
Thanks Thomas,
Is it important to use a IH oring or do you go to the hardware and match it up.
Dell
Is it important to use a IH oring or do you go to the hardware and match it up.
Dell
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- 10+ Years
- Posts: 179
- Joined: Thu Oct 22, 2009 8:35 am
- Zip Code: 49057
- Location: SW Michigan
Re: Hydraulic Leak
Thanks Thomas,
Is it important to use a IH oring or do you go to the hardware and match it up.
Dell
Is it important to use a IH oring or do you go to the hardware and match it up.
Dell
- tmays
- 10+ Years
- Posts: 3414
- Joined: Wed May 11, 2011 8:59 pm
- Zip Code: 39154
- Tractors Owned: 1969 Farmall Cub
1952 Cub
1942 Farmall H - Location: Raymond, MS
Re: Hydraulic Leak
If you're like me(out in the country) you'll spend the price of the oring in gas and time trying to find one. If you decide to look for one, it needs to be able to withstand the hydro fluid it will be in. Maybe one of the guys on here knows of a cheaper source. I have always just bit the bullet and buy from TM. That way I KNOW I have the proper one and it'll last
Thomas
- John *.?-!.* cub owner
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Re: Hydraulic Leak
The 0-ring is a real oddball size, and is made of a material that stands up to heat and oil. The 0-ring from IH which is about $7 is worth it. Here is a link from TM Tractor, one of our sponsors at the bottom of the page. O-ring and shipping will run about $10.
http://www.tmtractor.com/new/hy/674fp.htm
http://www.tmtractor.com/new/hy/674fp.htm
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
- BIGHOSS
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and a Palomino Mare named GIGI - Circle of Safety: Y
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Re: Hydraulic Leak
The correct O ring has a "fatter" (technical term) cross section that ones that you can buy locally. When installed on the shaft rod and down in the groove, the ring should be a little proud of the rod to have a good seal. Don't ask how I know this.
"Courage is being scared to death-but saddling up anyway".......John Wayne
- Don McCombs
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- Location: MD, Deep Creek Lake
Re: Hydraulic Leak
Anyone have the dimensions on this o-ring?
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- 10+ Years
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- Joined: Thu Oct 22, 2009 8:35 am
- Zip Code: 49057
- Location: SW Michigan
Re: Hydraulic Leak
IH parts store just calls it a 0.482".
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Re: Hydraulic Leak
Dell wrote:IH parts store just calls it a 0.482".
John *.?-!.* cub owner wrote:The 0-ring is a real oddball size..........
Boy that's the truth, that doesn't come close to converting to anything, fractional or metric. I would think it has something to do with a "compression fit" into the bore to give it more surface area and holding power. But where did the IH designers come up with that number in 1950? Plus actually find somebody to supply it?
- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Hydraulic Leak
It is very difficult to measure a loose o-ring, but thickness (technical term) of this one helps. Using a digital caliper I got an
ID of 0.478 (0.482 in parts catalog),
OD of 0.776, and
thickness of 0.147, which is very fat for an o-ring of that ID.
ID of 0.478 (0.482 in parts catalog),
OD of 0.776, and
thickness of 0.147, which is very fat for an o-ring of that ID.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
- Don McCombs
- Team Cub Mentor
- Posts: 17488
- Joined: Mon Feb 03, 2003 6:45 am
- Zip Code: 21550
- Tractors Owned: "1950 Something" Farmall Cub
1957 Farmall Cub w/FH
1977 International Cub w/FH
1978 International Cub
1948 Farmall Super A - Circle of Safety: Y
- Location: MD, Deep Creek Lake
Re: Hydraulic Leak
John,
Are those dimensions from a new one? Thanks.
Are those dimensions from a new one? Thanks.
- John *.?-!.* cub owner
- Cub Pro
- Posts: 23701
- Joined: Sun Feb 02, 2003 2:09 pm
- Zip Code: 63664
- Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
- Location: Mo, Potosi
Re: Hydraulic Leak
Don McCombs wrote:John,
Are those dimensions from a new one? Thanks.
yes. I had to replace a leaking one a couple months ago and shipping was the same for 2 as for one, so also ordered a spare.
If you are not part of the solution,
you are part of the problem!!!
you are part of the problem!!!
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