international 2606 backhoe and loader weak hydraulics he

where do i start?
changed the fluid, changed the filter 3 times. bad leaks, but it works. I don't know what I am doing, but willing to try.
How many filters does this have and where are they?
Pulled small pump for steering looks ok.
where does the main pump sit?
This thing squeals like a pig when using the front loader and slow backhoe and outriggers. I know about the diversion valve for steering. This is all I know about it.
Anyone know about this old girl? Scott

https://youtu.be/Li5UP6iZZB0

This post was edited by winter411 on 02/06/2022 at 06:52 am.

I'm not very familiar with those tractors The bigger brothers 806 and such I know better. Anyway if it is a diesel there should be one or two filters on the engine for fuel filters then a single separate filter maybe in a canister for the oil filter on the engine oil. Fuel filters may be in canisters also. Usually next to each other and may or may not be the same filter in each fuel canister. Then for hydraulic you say you changed it 3 times so you already know where it is. I can not say if this model has the steering and remote pump piggybacked on each other or not. Or if they are separate pumps. If same as the bigger models then it will be back behind a 5 sided cover looking like a pentagon sort of. Depending on where the leaks are that could be the majority of you slow, low pressure issue. I would look into fixing some of the biggest leaks first then consider the flow pressure and speed of operation. Massive oil leaks or many small ones will kill any pump for pressure or volume at the right places.

Pumps are the same as a 460 u. A piggy back set up. One is 12-17 GPM and the other is 3-4 GPM all bolted together. I believe though the small one on the end does the three point
though. One filter is stock by the brakes. The tube that feeds the pump is notorious for leaks at the seal in the middle if not positioned correctly. Is the oil foamy? If so air
leak. If you can find a 3000lb gauge and plumb it in on the ports for the pump by the clutch. It should be around 1800. Those tractors hydraulics are noisy until the oil is warmed
up from past experience in the winter. From the wording this tractor has only one pump? I would have thought with a back hoe it would have a front pump or pto one also. If some one
changed the main to a 17 it will cavitate because the factory filter is too small. There is a chance the flow control screen might be getting plugged. Does it sound like it is on
high pressure? If so the control valves may be (to set double acting to single) may be in between the settings. So many things to look at. Too heavy of oil can cause problems . It
should be Hytran which is a 20 weight. Filter, is it one oval filter or two doughnuts? If it is the two small round ones change it to the oval. Some thoughts.

Hello Scott welcome to YT! You have gotten some
good information so far. Here are a couple of
suggestions or items that may help. A common theme
on here when posters say ..I do not know much about
this.. is to suggest the purchase of manuals for your
machine. So in the 1st link there is an IT repair manual
that will cover basic need to know technical info to
repair your tractor. However, the first one on the list is
the IH manual, now it says it does not include hydraulic
pumps but my guess is that means it does not cover
disassembly and repair of the pumps, because IH
essentially called these throw away non rebuildable
units. This is the manual I would suggest you get, I
would call YT and see if they can tell you what it does
cover for hydraulics. It is the manual that dealers used
so it should cover all aspects well. In the second link is
the CNHI parts page for your tractor, you will be able
view the parts breakdowns of your tractor. This will
also help communicate proper terminology of parts
when you post here. For some reason they only show a
diesel model but I believe a gas model was also
offered. Is your machine a gas or diesel? In the video it
sounds like it is miss firing on one cylinder but difficult
to tell for sure. Lastly photos of the leaks you are
talking about would be helpful. However, for site
protection new posters are not allowed to post photos
until their 6th post. When.. if you get to that point
photos are added by the ..Choose files.. button near
the bottom of the reply and New Post pages. Hope this
helps!
YT manuals for 2606

CNHI IH 2606 online parts diagrams

What squeals? The valve? That could be a
relieve valve. A pressure check would
help tell what's wrong.

Wow thanks everyone!
I did not think I would get this many responding in the first day.
I apologize for not mentioning it is a gas tractor.
I have a manual like mentioned, it does not talk about the pumps.
It has a small pump in the left front block that goes to steering.
I am almost positive their would have to be another pump.

Not sure where it is but no 3 point on this. It has a backhoe and front loader. Would the other pump be under the seat area in the transmission block maybe?
Is their 2 filters?
One time I changed the filter and the backhoe worked fast and normal for about 2 min. Then slowed down to nothing. This was even with all the leaks.
sounded like a restriction somewhere.
Before I started tearing all the valves apart, I was going to try and find out more about it.
Thanks,Scott

I am hoping a relief valve would lead me in the right direction.
Still learning about this dinosaur.
I need to get a gauge soon.
Thanks ,Scott

found this in Parts manual, I might start here
156 - HYDRAULIC SYSTEM, CHECK VALVE, DOUBLE ACTING, FOR TRACTORS EQUIPPED WITH REMOTE CONTROL

I might have to tear it down again; I don't remember about the piggyback pump being there or not.
I know it is the Cessna pump

the YouTube video might have to be highlighted and copy and pasted
but shows it running.

If left front block means the block or valve plate ahead
and below the clutch pedal that is where the pumps
are. See the link, pumps are 10 & 13. Filter comes in
from the right behind the pentagon shaped plate.
Pump diagram

Yes that is the cessna pump I pulled out and the filter I have replaced.
it helps every time I changed the filter but within a couple two or three minutes it loses the power I gained.

(quoted from post at 07:45:02 02/06/22) where do i start?
changed the fluid, changed the filter 3 times. bad leaks, but it works. I don't know what I am doing, but willing to try.
How many filters does this have and where are they?
Pulled small pump for steering looks ok.
where does the main pump sit?
This thing squeals like a pig when using the front loader and slow backhoe and outriggers. I know about the diversion valve for steering. This is all I know about it.
Anyone know about this old girl? Scott

https://youtu.be/Li5UP6iZZB0

This post was edited by winter411 on 02/06/2022 at 06:52 am.

Click to expand...

Worked for a guy that had a International backhoe in the 70s not sure of the number though. There was a valve that I think was mounted on the left fender that you had to pull up to get the backhoe part to operate. Kind of looked like a big switch. You'd pull it up for the backhoe and outriggers and push it in when the backhoe wasn't in use and the loader was. Guessing the pump was sized to small to operate both.

Yes, that is the diversion valve I was talking about.
The small pump runs both the steering or the outriggers. You can switch it to either side.
Thank you!