Ford 2910 Hydraulic Lift Cover

okgat · Jan 30, 2023

Good day,

I am trying to once in for all, with your assistance, trying to stop my hydraulic lift cover from leaking. I have replaced
the o rings twice, but I still have the same problem. Any suggestions?

Thank you, Rick

Sean in PA · Jan 30, 2023

Have you checked both surfaces with a known good straight edge to make sure neither are warped or have any surface anomalies?

Also, where are you getting the o-rings from? They are not all the same. I always get mine from my NH dealer to be sure they are the correct ones. They are a little more expensive, but not so much so that it would make me want to risk getting the incorrect ones

sotxbill · Jan 30, 2023

There are one or two special square cut orings, that MUST be used or it will leak.

flembo · Jan 30, 2023

I think they are called Quad Rings if I am not mistaken.

shaun wallace · Jan 30, 2023

There is square cut orings used in couple locations and couple of boss orings used.

Check Break · Jan 30, 2023

(quoted from post at 05:40:40 01/30/23) Good day, I am ... trying to stop my hydraulic lift cover from leaking. I have replaced the o rings twice, but I still have the same problem. Any suggestions?

You may be using 70 durometer o-rings when you should be using 90-s. I don't remember any square or quad rings in that block. The book calls for (5) -13s, and (1) each of a -14, -113 and -123. I got so mad trying to scrape together enough of each on a Sunday last summer that I bought enough to last several lifetimes. The -123 is the oddball.

okgat · Feb 2, 2023

(quoted from post at 21:53:02 01/30/23)

(quoted from post at 05:40:40 01/30/23) Good day, I am ... trying to stop my hydraulic lift cover from leaking. I have replaced the o rings twice, but I still have the same problem. Any suggestions?

Click to expand...

You may be using 70 durometer o-rings when you should be using 90-s. I don't remember any square or quad rings in that block. The book calls for (5) -13s, and (1) each of a -14, -113 and -123. I got so mad trying to scrape together enough of each on a Sunday last summer that I bought enough to last several lifetimes. The -123 is the oddball.

Thank you all for your replies. I was getting very frustrated over my replacing and leaking o rings. Now I have a way out. Thank you, Rick.

Check Break · Feb 2, 2023

(quoted from post at 13:52:16 02/02/23)

(quoted from post at 21:53:02 01/30/23)

(quoted from post at 05:40:40 01/30/23) Good day, I am ... trying to stop my hydraulic lift cover from leaking. I have replaced the o rings twice, but I still have the same problem. Any suggestions?

Click to expand...

You may be using 70 durometer o-rings when you should be using 90-s. I don't remember any square or quad rings in that block. The book calls for (5) -13s, and (1) each of a -14, -113 and -123. I got so mad trying to scrape together enough of each on a Sunday last summer that I bought enough to last several lifetimes. The -123 is the oddball.

Click to expand...

Thank you all for your replies. I was getting very frustrated over my replacing and leaking o rings. Now I have a way out. Thank you, Rick.

I should have explained my prior answer a little better. There's no down side to using a quad or square oring. They will cross over to the same -xxx number. It's hard to figure out which port is leaking sometimes and if there's a little damage to the steel surfaces, a square or quad oring will give you more sealing surface. You might want to use a 90 duro -113 and -123 the next time around on the large holes. The small holes should do fine with a standard oring. The advice you got re square/quad came from experience and may be predicated on eliminating do-overs. Once in a while reality differs from what the book says.

Destroked 450 · Feb 3, 2023

If you look at the bottom of your remote you ll probably find a recessed area it one location
That location will line up with one of the oil ports in the lift top, due to the larger diameter you need to install a larger o-ring in the remote rather than the smaller o-ring you have in the lift top

That s actually the location for the second quad ring but a regular o-ring will work

I don t know why there s two different o-ring provisions for the same port but the small o-ring in the lift top just ends up setting in a cavity not able to seal anything

Sean in PA · Feb 3, 2023

(quoted from post at 11:50:37 02/03/23)
If you look at the bottom of your remote you ll probably find a recessed area it one location
That location will line up with one of the oil ports in the lift top, due to the larger diameter you need to install a larger o-ring in the remote rather than the smaller o-ring you have in the lift top

That s actually the location for the second quad ring but a regular o-ring will work

I don t know why there s two different o-ring provisions for the same port but the small o-ring in the lift top just ends up setting in a cavity not able to seal anything

He never mentioned having a remote valve. He said his top cover was leaking, which I took to mean the stock blocking plate.

Destroked 450 · Feb 3, 2023

Looked like a couple of hydraulic remote lines laying next to the pto lever, so I went with that
Couldn t remember if the block off plate had that recess or not
All of mine have remote valves

Sean in PA · Feb 3, 2023

I see those hydraulic hoses now that you pointed them out. Hopefully he'll post back with exactly what he has.

Ford 2910 Hydraulic Lift Cover

okgat

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Sean in PA

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sotxbill

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flembo

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shaun wallace

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Check Break

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okgat

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Check Break

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Destroked 450

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Sean in PA

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Destroked 450

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Sean in PA

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