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Hi all Came across an older Nissan N350 mini excavator. It has a "tow pressure valve". There is no pilot joysticks on the machine. All controls are mechanical. Is there someone here that knows anything about such a valve on mini excavators? Here is to only schematic available.

From "Log Splitter Hydraulic Filter, Gauge Questions" When extending a DA cylinder, the level in tank drop, because the net volume into cylinder (both sides of piston), will increase depending on the piston rod. Level drops in tank, the volume of the extended piston rod, have to be replaced...

Since SA and DA cylinders are a pretty common subject, I want to make this comment.... Some SA cylinders can look like a DA cylinder with two ports, but rod side port is always connected to return or straight to tank. Even if rod side is connected to the Control Valve port, there can be a spool...

I do not want to "high jack" that other thread with this, so I start a new one... You are right Larry, that all ports connected is not what we want here, and that was not my intention either. There is a lot of different terms and definitions, and many times they are used different ways.....I...

Got my newsletter from the "Aussie", Brendan Casey. Must wonder if he has been reading our posts here at TBN...:laughing:

These hose sizing nomograms are hard to work online, if you do not want to print it out or lay a ruler across your computer screen Added a hose sizing spread sheet... Have Fun!

Hi all! Have tried out the Google online spreadsheet. Made a Haldex-Barnes calculator! Try it out! In the Green area, you are supposed to enter your own cylinder measurements, pump speed, PRV setting and pressure setting on the pump. The table above will show estimated or expected cylinder...

This company have a simple site with some Kubota tips and system explanations...Follow link to Our Services Hints, Tips & Troubleshooting

How do we use the control valves and restrictions to control cylinder speed in an Open Center, OC, system (Constant Flow, CF) and a Closed Center, CC, system (Constant Pressure, CP)???

Here is another "challenge" to all of you.... Have you ever heard about "flow makes it go"?? IS IT A MYTH?? Can you guys tell me your "take" on this one??

Pumps, flow and restrictions..... The pumps we use in hydrostatic systems are so called POSITIVE PUMPS, the are designed to force almost the entire flow FORWARD. A NEGATIVE PUMP are designed to allow flow going BACKWARD as well as forward. From now I only talk positive pumps. There are pumps...

I think there is some different opinions about what causes cylinder drift/drop..... It is usually gravity loads that makes cylinder drift....some times even inertial loads can make cylinders drift....while loads from friction never do.... A double action cylinder can hold a load on each side...

The first thing to learn, when there is something you do not know.....is to learn how much you do not know about it....other wise you think you know it all, when you don't know s**t......

Where do I get the best deal on a engine head and a head gasket kit for a Kubota engine type# V2203 ? I already posted on Parts-Repairs http://www.tractorbynet.com/forums/parts-repairs/174660-head-kubota-engine-type-v2203.html

Where do I get the best deal on a engine head and a head gasket kit for a Kubota engine type# V2203 ?

A Trouble Shooting Story Background This was about a forwarder, a logging machine, and its operator, in the beginning of 1980. A forwarder has a loading crane and a bunk to carry the logs. http://www.youtube.com/watch?v=1DV1Vndlyco All sorts a safety features started to be implemented in...