How can I solve a cavitation problem?

[legman]

HELP!!!! I have an older Case 1845 and when I use the right/left controls there is a bad cavitation noise. This only happens during motivation and NOT when using the boom. We changed the filter with no resolution. Coleman Case in Pa. tells me that these machines should use 30 weight oil in the system, NOT "hydraulic" oil - so we put 30 weight in it. I've read on here about some machines having an anti-cavitation valve somewhere, but know nothing about these machines and would deeply appreciate some help from a qualified individual - someone with experience in the repair of Case skid loaders. Is there cheap fix to this cavitation? Please answer ASAP................... [email protected]

 

[Tazza]

Is it possible the problem is your hydraulic pump? when they wear they can growl and shudder too, are there any oil leaks? it could be pulling in air causing cavitation

 

[skidsteer.ca]

Is it possible the problem is your hydraulic pump? when they wear they can growl and shudder too, are there any oil leaks? it could be pulling in air causing cavitation

There are many things that can cause this. You need to get your hands on the repair manual or find a shop that knows them.
Have you check for charge pressure? (thats ehat makes your transmission light go out and feeds oil to the hydrostatic transmission) You should plumb a 500 psi guage into the system and see what the pressure does while operating. Not sure where it should be on the 1845 (is it a C or a B model) guessing 150 psi
Also does your trans light work? on when you switch the key to run but off right after it starts? It should stay off while the engine is running. Essentually if the chrage pressure run to low or out of pressure anytime during operation then the hydrostat is not being fead oil and can cavitate.
I'm no expert on these and I recommend you get a service manual so you can follow their testing procedures
Ken