News and Helpful Videos

At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: Pressure Reducing Valves A pressure reducing valve is an open pressure control valve. A pressure reducing valve knows when a sensing fluid pressure fluid has passed through the valve. When the pressure downstream is the same as the setting of the valve, the spool is particular closed causing a restricted flow path. When that much restriction is in to play, it turns any extra pressure energy ahead of the valve into heat. If the pressure, after the...

A return line filter is positioned in the circuit just before the reservoir. Range of illustration usually found in return line filters is from 40-3 micrometers. Advantages A return line filter catches the dirt in the system before it enters the reservoir.The filter housing does not operate under full system pressure and is therefore less expensive than a pressure line.Fluid can be filtered fine since system pressure is available to push the fluid through the element. Disadvantages There is no direct protection for circuit components.In return line full flow filters, flow surges from dischsrging cylinders,actuators and accumulators must be considered...

At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: Terms Associated with Hydraulic Motors Breakaway Torque – this is torque that is needed to get a non working load turning. You need more torque to start a load, than to keep it moving. Running Torque – this means a motor’s load, meaning the torque to keeping a load turning. It takes a reading of the actual torque it takes to size up the inefficiency and is expressed as a percentage of it’s theoretical torque. The running...

At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: John Deere Crawler 755B – Install Fuel Injection Pump Procedures for installing a standyne DB4 fuel injection pump.If the injection pump drive gear needs replacing, then you will need accurate engine timing. While the pump drive gear is against the front plate, the pump shaft (A) and index pin (B) need to be aligned with pump drive gear slot.The shaft roll pin can be easily damaged when the drive gear is put on to tight if it...

At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: Sundstrand Sauer Danfoss Series 21 Model to Group Cross Reference chart will help with models that are listed. And if you need further help, please leave a comment or call us at 800-361-0068email – sales@hydrostatic-transmission.com We can get you all the information you need to understand your Sauer Unit, whether it is on the chart or you need another series all together.