Hydraulic pump orings

Ultradog MN · Apr 27, 2015

I mentioned before that the side pump on my 4200 SOS is leaking pretty bad and I think it's sucking air.
Pump is the same as a 2/3000.
It is the older style with 3 bolt flange to attach the hydraulic lines.
I want to order new orings for the flange.
I looked at the CNH parts site but can't figure out part numbers for those orings.
Could someone look those up for me?
Also, are the ones for the flange that hooks to the rear end the same?
I would order all 4 O rings while I'm at it.
Sean? Rick?
Thanks for any help.

Sean in PA · Apr 27, 2015

The parts site just lists part numbers for the ones at the pump, but it lists actual specs of the o-rings for the ones back at the center housing. Here you go.

At pump:
Inlet/suction port - C0NNB998A
Pressure port - 47697560 (was C0NNB997A originally)

At center housing:
Suction (lower) port - 272344 - 90 Duro, .487" ID x .103" Thk
Pressure (upper) port - 83932416 (was 87054S95 originally) - 90 Duro, 1.062" ID x .139" Thk

UPFord · Apr 27, 2015

When I replaced these on my 4500 with left side engine mount pump, the large o-ring crossed to a -215 and the smaller one to -112.

Ultradog MN · Apr 28, 2015

Thanks fellows.
I will call the dealer and get them in the mail today.

Hydraulic pump orings

Ultradog MN

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Sean in PA

Well-known Member

UPFord

Member

Ultradog MN

Well-known Member

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