175 Aux Hydraulic Pump Clearance Problem

I upgraded my early 175 to the newer style auxiliary hydraulic pump. When I went to install the Hydraulic pump assembly, the auxiliary pump hits the side of the differential housing and won't allow the PTO shaft to align with the PTO driven gear or the transmission PTO shaft. I seem to be lacking about 5/16 of an inch. I was under the impression that the newer style aux pump would fit in an older tractor. Is there another style of aux pump that would fit. What am I missing here?

Hi,
Which type of auxilliary pump mounting do you have? It can be either the plated drive unit consisting of two plates and an idler gear mounted on the front of the pump or a 'shelf bracket' type where the aux pump sits on a 'shelf' above the main pump.
Can you post a photo of the new pump etc?

DavidP, South Wales

David, Thank you for your response. The original pump was the single section shelf mounted Cessna pump. I was worn out and I could not find any new replacement pumps of that type so I felt that I needed to convert to the newer style two section plated drive Auxiliary pump which are readily available. Attached are three photos. The first one shows the misalignment of the stand pipe ports on the pump and the manifold on the side cover. I drew a line on the centerline of both parts for reference. I believe that the alignment here may be a corrected by a spacer between the side cover and hydraulic manifold. The second and third pictures are the front and rear view of the Aux pump. You can see that the pump is resting against the differential housing wall. Also note that the pictures were taken with the Aux pump assembly mounted to the old lift pump. Wen mounted to my new lift pump; the alignment is worse. In fact so bad that I cant engage the splined pump shaft into the ground speed PTO gear.
David D, Ohio

Hello,
Hmmm it does not look good. I can't see but I'm assuming that you have the Ferguson pump dowels fitted. The pump assembly does look to be upright. Have you cross-referenced the number for the new aux pump to the 175 and checked with any other part numbers that you have? As far as I am aware there is only one part number for the plated drive assembly.
You may be trying to cross over a design change that was not planned for whatever reason to be interchangeable or just plain unlucky if no one has done this before. Can you give me the part number (MF) for the new pump and I'll see what I can find on this side of the pond?

DavidP

Yes, the Ferguson pump was installed with the dowels in. If you search for 1663627M92 then that is the pump that I have. Now I was looking at another pump that looks like it should fit the plate mount. It has a 12 spline shaft like the one I have and the mount holes look the same in the pictures. The AGCO parts book shows this pump using the same plates and drive gear as the one I have. It is 886821M94. It is referred to as a lift pump as on the YT site. Or it is also referred to an Aux pump or Multipower pump on other sites. The only thing that the AGCO parts book refers to it as is: HYDRAULIC PUMP (6 SPEED WITH IPTO WITHOUT. It looks to me like this pump is used for independent PTO and Multipower as it has both ports but can't be used for auxiliary hydraulics when using it for Multipower and/or IPTO. This other pump looks like it may solve my clearance problem as it angles smaller toward the top which is where I'm having my clearance problem. I wonder if this would work to run my Multipower and then I could use the Ferguson Scotch Yoke pump for my auxiliary outlets? I am going to mount a front mounted engine pump for the loader and the Ferguson pump should be good enough to run a hydraulic cylinder on a mower?
Thanks again
Dave

You have the wrong pump, the pump you have is sparex part number S.40875. The pump you need is sparex part number S.40873. See picture below for the difference.

PTfarmer, will the S.40873 pump run only the multipower? Or is it capable of running the auxiliary hydraulic and multi power as well? Looks
like a single section pump?

Pump S.40873 (6.3 Gallon Per Minute).
Pump S.40875 (5.8 Gallon Per Minute).