Re: Hydraulic Tank Question
Reply #2 –
Bruce,
As Mike said, the hydraulic reservoir is not pressurized. Oil is pumped into the tank through the return line, and pumped out of the tank through the supply line going to your hydraulic pump. The tank always stays at atmospheric pressure.
The dip stick is the thing with the "T" handle. If it is working correctly, you turn the "T" handle clockwise to lock it into the hole in the top of the tank, and anti-clockwise to remove it. You should have a similar type locking dip stick in your transmission oil filler tube.
If you can turn the "T" handle clockwise and it never tightens up, then like Mike said the nut (inside the tank cover) is either stripped or it fell off. Either way, the solution is to remove the lid and see what is going on. If the nut fell off, it will be in the bottom of the tank. You can use a magnetic retrieval tool or a claw tool to fish it out. DON'T remove the filters unless you are sure you know where the nut is. You don't want the nut falling down inside one of the hydraulic lines.
If the dip stick won't tighten down, for whatever reason, pull it straight up and out. Then check the oil level in the tank. One reason for the fans turning too slow might be a very low oil level in the tank.
Let us know what you find.
Topic: Hydraulic Tank Question