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Re: Re: Re: Loader Hydraulics slow and trembling-Why?
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Posted by Bill on May 17, 1999 at 15:05:58:
In Reply to: Re: Re: Loader Hydraulics slow and trembling-Why? posted by Ed on May 17, 1999 at 07:14:09:
I agree that you should start with the simplest
first. However, switching fluid viscosity and
adding reservoirs are only band-aid solutions.
There has to be something in the system making
the oil overheat. I would only use manufactures
recommended oil or equivalent. They have specified
the optimum oil for the operating temperature of
the machine. The only reason to change viscosity
is for climate, but then only what's recommended.
Now let's get down to basics, did the tractor
always have this problem? Are the fins in the oil
cooler plugged? Did you fill to the proper level?
Did you use the proper replacement filter? Are the
cylinders leaking externally or internally? Can
you hear fluid by-passing the relief valve? Are
there any leaking lines?If you listen to the pump
while the tractor is running do you here knocking,
cavitation or bearing noises? What about the breather for the system, is it plugged? Is it a
closed centre or open centre system? If it's a closed center system does your steering creep, or
rockshaft settle? A leak in these two systems can
cause oil to overheat as well as take fluid away
from the loader function. Check some of these things out, but just don't change viscosity, you'll do more damage than good. I hope it's not
the pump, but don't be surprised.
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