News and Helpful Videos

How to Troubleshoot Your Hydraulic System

Posted by Tammy Soper on

At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss; Hydraulic System Troubleshooting Below is a list of problems and what causes the problems. Problem Cause The hydraulic system will not operate 1,2,3,4 Show hydraulic system action 1,3,5,7,8 Hydraulic action is not smooth 1,5,7,8,9 Lift arms go up slowly at full engine RPM 1,3,5,7,8,10,12 The lift arms will move with the the pedal in neutral 6,11 position The lift arms come down slowly with the pedal in the 6,11,12,13 neutral position Description of Causes (numbers above correlate...

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Solenoid Control – Options on the External Pilot Pressure

Posted by Tammy Soper on

At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: External Pilot Pressure Option for Solenoid Control There are other options for a solenoid control and that is using external pilot pressure. How this is used, is as follows; pressure for the pilot valve comes from the pressure passage in the main valve. There are times you would not want this, such as when the system pressure goes up or down to a degree that the pilot pressure to shift the main valve spool may not be...

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Rexroth Hydraulic Symbols Part 2

Posted by Tammy Soper on

Rexroth Hydraulic Symbols Part 2 SO – new style – open loopSG – new style – closed loopW – old style motorM – new style motorO – new style – open loop pumpTO – tandemG – closed loopSL – hydrostatic bearingOld Style – straight piston – 20-25 degree axis housingNew Style – tapered piston & bearing – 45 degrees axis housing If you need further help deciphering letters and numbers of different Rexroths, let us know by call us at800-361-0068sales@hydrostatic-transmission.com

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Rexroth Piston Sizes – Hydromatik

Posted by Tammy Soper on

Rexroth Piston Sizes – Hydromatik Piston Displacement Degree12mm 12cc 10cc14mm 28cc 23cc20mm 55cc 45cc22mm 80cc 58cc25mm 107cc 87cc28mm 160cc 125cc32mm 225cc 182cc Series 1-4Old StyleStraight Piston If you need more info on these sizes, call us at 800-361-0068sales@hydrostatic-transmission.com

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Definition of a Hydraulic Double Pump

Posted by Tammy Soper on

Our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic PartsToday we will discuss: Hydraulic Double Pumps The vane pumps is usually referred to as a single pump, it has one inlet, one outlet and a single cartridge assembly. They also are called double pumps. It has a housing with two cartridges assy., one or two inlets and two separate outlets. It can be said it is a double pump with two pumps in one housing. A double pump can let out two different flow rates from each of the outlets. And...

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