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Sundstrand Sauer Danfoss Series 20 Cylinder Block Procedures Below is picture will have a description Fig. 1 thru 3 Fig. 1On this particular cylinder block you can see that the bores and port face is clear from nicks, burrs and scratches. The block’s face needs to be flat to seal it against the bearing plate. And the bronze cylinder bore bushing cannot be loose at all. Fig. 2This picture shows a pulled bushing. The pistons have been contaminated, overuse or lack of lubrication. Also the bore bushings cannot be replaced. When it is like this,it is not replaceable…needs to thrown...

Sundstrand Sauer Danfoss Series 15 InlineThe configurations and specifications of an Inline Type PumpThe diagram shows the optional mounting flanges:4 boltSAE type A 2 bolt Also it tells us that case must drain directly into output axle or gearbox thru shaft bearing.And as you can tell by the diagram it shows the output and input shaft, control shaft and drain. And it gives the dimensions for the SAE Type A 2 bolt mounting flange. If you need additional information on this topic, please let us know.800-361-0068sales@hydrostatic-transmisison.com

Sundstrand Sauer Danfoss Series 15 – All Types Shaft & Trunnion Replacement In the transmissions lip seals are generally used. They can be replaced without taking out the transmissions, but if you need to replace the input or output shaft, you will need to take out the transmissions from the machine.Make sure you take out the seal very carefully from the housing bore. Try not to damage the housing bore or the shaft. And when you take out the seal, disgard it and put in a new one.Before you put in the new shaft, you will need to polish it,...

Sundstrand Sauer Danfoss Series 15 & 18 Precautions the variable displacement pumps and motors of the 15 & 18 series transmissions are automatically controlled. The control shaft is linked directly to the swashplate in such a way that any movement of the control shaft is in a direct proportionate swashplate movement and change in pump flow and motor shaft speed direction.They don’t have any mechanical or hydraulic massing on the swashplate to direct back the swashplate to a neutral position. One must conclude that the parameters that were designed to control the system to be used with the 15 &...

Sundstrand Sauer Danfoss Series 15 Variable Displacement Pump The manual control on a variable displacement pump is attached directly to the tiltable swashplate, so the operator can move the control so that the swashplate can be slanted at such an angle the fluid flow can circulate thru the pump. The fluid goes into the fixed displacement motor and then pressure builds up so that it allows the motor output shaft to starts to rotate. The speed that the output shaft turn is relative to the position of the control lever and is variably within zero and the highest speed. The...