running 450c without hydraulic oil

RussT

New User
I have a 1977 John Deere 450C. Today the main high pressure hydraulic line busted near the pump in the front. This is the hydraulics for the blade. i need to get the dozer on a trailer to get it where I can repair it. Can I run it without any hydraulic fluid in the reservoir? I'm afraid of burning up the pump. My thought is that I can back it on the trailer dragging the blade behind me.
Thanks!
 
DON'T!

Can you pull/disconnect/uncouple the pump if you REALLY have to move it rather than simply toughing it out and replacing the line right where's sitting?
 
I think you would sooner burn up the clutches in the hyd. reverser unit ? and maybe the steering clutches ?
 
I haven't even thought about uncoupling the pump. Its mounted in front of the radiator so it shouldn't be too hard. But this being such an old machine it may have "grown" on there. I'll take a look. Thanks Bob!
 
Does anyone know how hard it is to take the hydraulic pump off of the front of a John Deere 450C?
 
Hydraulic pump has nothing to do with the reverser or steering-clutches.

If the pump had oil in it recently and is still wet inside, I would not be afraid to run it long enough to go on a trailer.

It is a generic Cessna 23 GPM gear-pump. Two bolts and it slides right off the splined shaft IF not rusted stuck.
 
My Case 580CK backhoe has the same pump as the Deere 450C and it too hooks up with just two bolts. In theory, it is supposed to slip right off. NOT the case with my Case I thought I was going to break the pump in half when I worked at prying it off.

So yeah, I know what you mean. In theory though, the 450C uses a two-bolt SAE flange-mount and is supposed to slip right off for easy fan-belt changes.
 
Thanks JDEM. The hole in the hose is more like a blowout than a leak but I thought I would put some more fluid in the tank, lay plastic under the bulldozer and on the trailer and load the dozer. That should keep oil in the pump while its running but will waste a lot of fluid.
 
Not quite the same thing. I recently bought a wrecked 2002 Chevy van at an insurance auction. Engine oil cooler lines broken off, along with no coolant in engine. Auction guy started it up and drove it onto a trailer. I was kind of in shock when he did it. Engine was completely out of oil but still wet inside. I thought for sure it would be damaged.

Nope. I fixed it all up and driving it now. 4.3 V6. Tough engine I guess.
 
Yes , but am thinking more along the lines of it being out of oil and will not build pressure to lock the reverser plates tight enough to drive. Or are those made different than a tractor with a hi-lo where oil pressure has to be applied to make them not slip and tear their selves up.
 

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