VALVE GP-SOLENOID 1432363 - Caterpillar

This manual provides repair procedures for the Series 50 fixed displacement motor/pumps and variable displacement motors. These instructions are divided into "Minor Repairs" and "Major Repairs." Minor Repairs are those repairs which can be performed without removing the housing, end cap, or control head. These repairs can be performed by any customer without affecting the unit warranty. These repairs are also described in the "Series 50 - Service Manual," Bulletin BLN-9960. Major Repairs are those repairs which require the removal of the housing, end cap, or control head. These repairs are to be performed only by Sundstrand-Sauer Authorized Service Centers and/or original equipment manufacturers who have been adequately trained by Sundstrand-Sauer to perform these repairs. Performing major repairs on the Series 50 products may affect the unit warranty status, thus the factory should be consulted prior to undertaking such repairs.These repair procedures, when used in conjunction with the Series 50 Service manual, Bulletin BLN-9960, provide complete service and repair information for the Series 50 products.Sundstrand-Sauer, through its worldwide Authorized Service Center network, provides a complete repair service for the Series 50 products.The torque values, pressures, and dimensions used throughput this manual are given in English and metric measurements.
Fig. 1 - Series 50 Fixed Displacement Motor/Pump
Fig. 2 - Series 50 Variable Displacement MotorSafety Precautions
* When Series 50 units are used in vehicular hydrostatic drive systems, the loss of hydrostatic drive line power in an acceleration, deceleration, or neutral mode may cause a loss of hydrostatic braking capacity. A braking system, redundant to the hydrostatic transmission must, therefore, be provided which is adequate to stop and/or hold the system should the condition develop.* Certain service procedures may require the vehicle/machine to be disabled (wheels raised off the ground, work function disconnected, etc.) while performing them in order to prevent injury to the technician and bystanders.* Use caution when dealing with hydraulic fluid under pressure. Escaping hydraulic fluid under pressure can have sufficient force to penetrate your skin causing serious injury. This fluid may also be hot enough to burn. Serious infection or reactions can develop if proper medical treatment is not administered immediately.* Some cleaning solvents are flammable. To avoid possible fire, do not use cleaning solvents in an area where a source of ignition may be present.