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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 90 – Pulse Sensing Change Some of the pulse pick ups that are on the pumps and motors between June 1992 and April 1994 were found to be defective. They were corrosion on the internal circultry.The corrosion of the internal circultry can have intermittent operation or partial loss of signal and eventual failure.The picture shows what an installation looks like of the silver color of the potentially defective pulse pick up body. 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 90 – Side Cover Change In this section they will be dealing with Service Bulletin SB – 1995 – 025changing the side cover and swashplate leveler guide post.The new way is that the side cover has two hardshell inserts in the machined slot, which gives aid to guide the swashplate leveler and modified guide post. The swashplate leveler doesn’t change.Old guide posts will still be available for service requirements of pumps that have...

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 90 Filter Tube ChangesChanges to this were in February 1996. The reasons for this is to add the tube length for the remote filter adapter that was left off first time.The filtration tube used in the manifold for the remote or integral pressure filtration could be too short in length. The filtration tube need to be measured for the correct length and replaced if it needs to be. The first repair requirement for...

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 90 – General Info Cleanliness is a key means of making sure that your hydraulic pump last for a long time. You will need to clean parts using a diluent to properly clean parts and use adequate time to let them dry. And you will need to keep them in an area that is dust, dirt and chemicals free away from parts. Make sure all seals are protected from contamination.Parts that have motion...

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 20 – Axial Piston Slipper Pad DesignThey have 9 pistons that go into the cylinder block. When the cylinder block rotates, the pistons are pushed in and out of the bores by the angle of the swashplate. The results of it is a specific amount of fluid that is displaced for every time the revolution of the cylinder block. In a pump, the fluid is pushed out as the angle of the swashplate...