Case 648 update. Hydraulics. We made a mess

1939farmall · Apr 17, 2022

Decided against my better judgment to take a look at the hydraulics inside the shop since they were calling for rain all day, yup got oil everywhere! Here what were getting out of it.

It sure looks and feels like it has more water in it than oil. We opened about every line and plug we can get to drain it all out. Im hopeful fresh oil will help solve the slow / No travel in high gear. Got a new filter and O-ring. That was a little pricey! But we have to have it.

I think were got about all the old oil/water out of it that were gonna get. I feel like weve disassembled this poor little tractor about 3 time now, but were getting closer to trying it out!

Im thinking well quit for the day and start putting fresh oil in tomorrow. Any tips for getting air out of the system when we start adding oil? As always thanks for your knowledge and help!

Steve@Advance · Apr 17, 2022

Any way to take the cylinders loose and cycle then through, still a bunch of mud trapped inside them.

Might want to wash out the old filter, put it back in for the initial start up, then make the decision if you want to change the oil again, then put in the new filter.

The air will self purge as the cylinders are cycled. The level will drop as the air comes out. Might be a little jerky and moan, but eventually the air will come out. The oil level will drop some as the air clears.

Any clue as to how water got in it? Flood? Missing breather letting rain in?

1939farmall · Apr 17, 2022

Steve,

Yes we took the cylinders loose every where we could. And cycled them manually with jacks and a come along. I think were close to having most of it out. The book calls for 13 quarts for the tractor and loader. Not sure what the backhoe holds but I know were around 3 gallons we got out of it. Still have to do the cylinders for the loader arms. I have it blocked up for now so we can work on it. I figured we would do them last.

Good idea on the filter. I was thinking we may have to flush the system twice.

As far as the water getting in, the tractor sat outside under a deck for the last 10 years. My best guess is it seeped in past the seals on the cylinders. I think we probably made a mistake not draining it first before we got it running, but we werent sure the engine was good at the time so that was the first priority.

Thanks

caterpillar guy · Apr 17, 2022

Cycle some cheap oil through it first then put the good stuff in then change in about a week and again with filters both time should have most of it out then. Even though you cycle the empty cylinder there is still some in the system and lines you can't drain.

Tom/Idaho · Apr 18, 2022

Not being critical just offering a safer (for me) way to hold up the loader.
I cut 2 pieces of 2 x 1/4 angle iron the length of the visible rod and set one end on the top of the cylinder
and the other end into the loader frame where the rod attaches. The weight of the loader frame should hold it in place. Can put a hose clamp or two around it for added safety. Eliminates the post that usually gets in my way.
Works for me when holding up the loader on my 8N.
I think it's great that you and your son are doing this together.
Tom/Idaho

1939farmall · Apr 18, 2022

Tom

Thank you, I always appreciate safety tips. Especially since Im trying to teach son how to work around these things. You cant see it in the picture but I had a chain on the loader as well holding it from above. The post was the secondary safety just in case. Between what I know and what you guys have taught me i think son is getting the right idea. Now if he sees me do something questionable he will point it out. Thanks again.

1939farmall · Apr 18, 2022

Caterpillar guy

That sounds like the right idea. Im going to add oil to it today and cycle everything and see how it looks.
Thanks.

Case 648 update. Hydraulics. We made a mess

1939farmall

Member

Steve@Advance

Well-known Member

1939farmall

Member

caterpillar guy

Well-known Member

Tom/Idaho

Member

1939farmall

Member

1939farmall

Member

Similar threads