And It Gets Better

History: Prior owner of my 966 had bought a new front end loader and had it installed here locally. Shortly thereafter, the darned engine develops a sleeve o-ring leak allowing antifreeze into the crankcase and the tractor was parked. The thing sat for 6 years before I bought it.

Fast forward to my oil pump replacement debacle.

Went out there this morning to swap the hydraulic pumps and come to find out, according to the part numbers, it has already been replaced with the high output 17 gallon pump. Local boys must have swapped it out when they sold him the loader.

Considering that the tractor only has 4,000 original hours on it to start with and also that I find a bad o-ring/gasket at the pump yesterday, I think I'm totally wasting my time replacing this pump.

Maybe just put in a new o-ring, gasket and button 'er up?

Allan

I guess you checked to see if the baler cylinders are OK. Worn o rings in the cylinders cause the same symptoms.

KEH

All is well now tho, she snaps her open and closed like a trouper.

Allan

The o-ring was for sure the problem. Wrong darned one.

See my fix down under the Vet's post and see what ya think.

Allan

The thing was flow rated at 1800 lbs at wide open throttle when I bought the tractor. A new pressure valve was put in at that time also.

Now, this hydraulic pump has been "singing" ever since I got it.

Further, the hydrulics have been getting steadily worse the past year and now will not even work unless I have the tractor wound clear up. Won't hardly even open the gate on the big round baler.

It will still lift that big plow if wide open, but won't budge it at any speed lower.

Oil is pretty darned black too. Maybe I should just go ahead and replce the pump and service 'er all out while I'm at it?

Allan

Relief valve first. This is a late '76 black stripe model so is supposed to run at (I think) 2,000 or 2200 lbs.

Now, the o-ring was for sure the problem; it was too skinny by far and too small to fit inside the shoulder of the recess. New o-ring doesn't come with the pump nor does it come with the cover gasket package; thought I was stuck fer a minute.

So, I do the next best thing and arrive at this cure from my transmission days. Is it gonna work? I really don't see why not.

Yes, I'm using 6" guide bolts to go back on and I decided to just go ahead and put on the new pump, as it "feels" stouter when ya turn it.

Thanks Bud,

Allan

But, when I bought this tractor, the locals told me that there is no way that the loader could have more than 50 hours on it 'cause right after they sold it to him, the tractor went down and he just parked the old thing.

I'm throughly convinced that the pump was new with that loader because the loader was plumbed to work off the tractor hydraulics and it had one of those fancy electric over hydraulic controls installed also.

On the other side of the coin, there was a problem going on with that hydraulic system the day I bought it. Look at that hitch..... .

Would you go to the trouble of replacing the pump while you were in there, if you were I?

Allan

Money has already been spent. I got over that little hurdle yesterday. :>)

Yep, I bolted on the new one. It just plain "feels" better; probably 'cause there is no wear on the gears.

Thanks,

Allan

I dunno about that IH stuff, but with my old Ford's, when I think a pump is going bad, I pull the thing apart and just look at the housings. When the bushings start to wear a bit, they cut the housings up, and the pump is pretty much toast then. Wouldn't take you but half an hour I bet, and then you'll know. I know that with the Ford's, it doesn't take much wear to make quite an impact on performance.

Rod