Hydraulic Accessory Plate - O RINGS?

duckkilla

Member
I'm getting ready to add a hydraulic accessory plate to my ford 861. I have the accessory block, but I do not have the O-rings to go with it. The drawing shows the following

(5) NAA 937 E
(1) NAA 937 D
(1) NCA 834 A
(1) NCA 917 A

Does anyone know if there are some easy to get hardware store equivalents? If so, what # or diameter?

Thanks!

Steve
 
those orings come in a top cover kit or you can get them in a seperate kit.

I HAVE hit up my universal kit and replaced orings under a option cover i took off before as I was in a pinch and could not run to the dealer. the only hitch is repalce all of them. don't repalce one new fat one and leave 7 old hard smashed ones under there or you will be taking it off to repalce the other 6.

ps. a lil gun grease holds them in place just fine..
 
Do I need a gasket? The manual doesn't show one, but the top end kits that I'm finding have one....???

Thanks.

Steve
 
I just went through CNH for the O-rings. They aren't that expensive at all and it beats running around locally trying to save a dollar or two. They will also be dimensionally correct. I think I got all of them for about $7 give or take.
 
Yrs ago , when I removed the blank accessory cover on my 640 to install a remote for me front bulldozer blade , I tried using O rings from an auto parts store . I had leaks everywhere . So someone suggested going to my local Ford tractor dealer (before Ford gave in to a name change) & buy the specified hydraulic remote cover O ring kit . After that I had no leaks .God bless , Ken
 
Some of the diameters are a little odd. I found most of them online (McMaster Carr) but you're required to buy WAY more than you need and thus more expensive. This is one of those CNH is easier and faster endeavours.
 

iirc the tisco or sparex part number is 1495... for the oring kit. And yes if you dont use the correct special orings, it will leak forever.
 
(quoted from post at 17:32:18 04/20/14) Some of the diameters are a little odd. I found most of them online (McMaster Carr) but you're required to buy WAY more than you need and thus more expensive. This is one of those CNH is easier and faster endeavours.

I am going to disagree on the odd diameter part... Sometimes the engineer will throw you a curve ball like the o-ring used on the un-loader valve but its still a standard off the self o-ring... I have had to buy it to understand why he chose it... I started pushing sizing up your own o-rings a few years ago and a few have caught on its not that hard once you get the hang of it.. I will agree CNH is a EZ out just take a fat pocketbook...
 
Fat wallet??? Nope! I just priced out the o-rings
for my 545 and it was a whopping $6.18 (just
priced it out through the CNH parts site). I
don"t know about you, by my time is better spent
elsewhere than scrounging up the right ones and
burning fuel. Order online, drive, pick up,
repair and move on. Easy! CNH does have some
greatly overprice items, but this is definitely
not the case in this instance. At least CNH gives
you the dimensions of these parts if you have the
overwhelming desire to buy elsewhere. Comparing
new to the old compressed ones is asking for
trouble. But to each their own.
 
Those numbers have been superseded. New #'s are at the link below.

If you click on the individual part numbers, a dimensional description will come up, including durometer.

On the other hand, keeping it simple, the CNH price ranges from $.53 to $1.94 each.

Looks like Messicks have them in stock, if you don't have a dealer nearby. You could have them at your door in a couple of days.
861 parts lookup
 
agree that if you get the proper size and material, an o-ring is an o-ring.
I get my Ford hydraulic stuff o-rings from my CNH.
on the shelf, and I like to do a little business there to keep a good relationship with them, in case I need something offbeat.
(and o-rings are one of the few things I can afford there!)
I do keep an eye on their parts though, seems same part as every place else lately, in a CNH bag.

o-rings have the same problem as everything else nowadays.
quality -import- is slipping. too soft, break in your hand, junk.
one of my previous jobs was as a serviceman on vacuum tester
machines for auto air conditioner condensors. lots of o-rings that go on and off hundreds of times..
Don't know where they got them, but they were GOOD stuff......
 

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