i have a kramer 580t . a squeke sound (not a grinding) has…

I see your question has not been picked up yet, I would like to help.

I am assuming you are looking for a drive train noise since you have checked the wheels for leaks. I have not worked on any Kramer machines but, it looks similar to the compact Cat loader.

The common problem I see with machine equipped with a central lubrication systems is, the driveshaft is forgotten. The Cat loader has a driveshaft from the rear axle to the front axle. The more the machine is used in a tight turn the fast the wear is on the "U" -joint (sometimes called, spider or cross-joint). If they have grease Zerk fittings, apply grease and see what happens. If no fitting is on the joint, the joint may need replacing.

Check for signs of rust around each bearing seal or remove the clamps to drop the joint for better inspection. The more is it exposed to water, the more common the problem.

Another common noise is, dirt or rust builds in the parking brake drum. The only thing to do here is apply the brake to see if the noise will change or remove the drum to inspect the shoes.

Inspect the fluid levels in each final drive, they are very small and any leak would lose all the oil quickly. Don't trust the fact you cannot see oil on the outside. Oil can also leak to the inside. Axle oil level must be maintained to prevent low oil level on the final drives. Most share the same oil but, slope work can effect levels. Park machine on level surface overnight to help keep levels even.

I hope this can help. If you have more questions, please feel free to ask. I will help as much as I can. Thanks, Donnie