• Sundstrand Sauer Danfoss Series 40 MPV035D/MPT035D Trunnion Cover Seal
    Sundstrand Sauer Danfoss Series 40 MPV035D/MPT035D Trunnion Cover Seal
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    Sundstrand Sauer Danfoss Series 40 MPV035D/MPT035D Trunnion Seal The trunnion seal is being added to the trunnion cover as a major improvement to series 40 variable and tandem direct displacement pumps. The trunnion cover/seal assy. and the trunnion seal are still stocked as service parts. The trunnion cover however is not in stock as a…

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  • Vickers Variable Displacement Piston Motor
    Vickers Variable Displacement Piston Motor
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    Vickers Variable Displacement Piston Motor Although pumps and motors are almost the same in design, they operate in reverse of each other.  Motors are rotated by the fluid and pumps are forcing it thru the unit as it rotates. And variable displacement units are operate by the design of the yoke angle. Now piston motors…

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  • Denison P11V Port Block Installation
    Denison P11V Port Block Installation
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    Denison Port Block Installation   The part of the pump that has the unplugged hole in the housing assy facing up, then put in the gasket (5) on the housing. Put two port plate pins (3) in the face of the port block assy (2). Use a good amount of grease  to the back of…

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  • Sundstrand Sauer Danfoss Series 20 Parts Breakdown for Hydraulic Fixed Motor
    Sundstrand Sauer Danfoss Series 20 Parts Breakdown for Hydraulic Fixed Motor
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    Sundstrand Sauer Danfoss Series 20 Parts Breakdown for Hydraulic Fixed Motor   At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic Parts Today we will discuss: This is a Sundstrand Sauer Danfoss Series 20 Breakdown of a Motor. This will help in assembling the motor,…

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  • Troubleshooting Noisy Bearings Part 2
    Troubleshooting Noisy Bearings Part 2
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    Troubleshooting Noisy Bearings Part 2   At our Hydrostatic Pump Repair Site, we offer many types of Hydrostatic Transmission Repair and information relating to Hydrostatic Parts Today we will discuss:   Noisy Bearings Part 2 Again this subject talks about how noisy bearings and their solutions to fixing the problem and you should fix the…

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  • Denison Axial Piston Constant Volume Pump 500 Series
    Denison Axial Piston Constant Volume Pump 500 Series
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    Denison Axial Piston Constant Volume Pump 500 Series   Below is a table for recommended oil specs. It also is a good idea for the oil to have in it an anti-wear additive. This helps with the noise and will expand the life of your oil. It helps with distributing properties within the oil.  …

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  • Denison Goldcup Series – System Pressure Gauge
    Denison Goldcup Series – System Pressure Gauge
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    Denison Goldcup Series – System Pressure Gauge When you are putting in your gauge it would be helpful to loosen pin that is left in the port. Typical Pressure Features Closed Loop Replenishment – 180-220 PSI + case pressure Servo – 300 PSI + case PSI + 40 PSI per 1000 system pressure Case –…

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  • Denison Electro Hydraulic Stroker For Goldcup Series Pumps
    Denison Electro Hydraulic Stroker For Goldcup Series Pumps
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    Denison Electro Hydraulic Stroker For Goldcup Series Pumps   This type of control starts the rotary input shaft by using a hydraulic spool. The zero current condition the jet pipe is focused over the two receiver orifices to construct the same amount of pressure to each receiver. The jet pipe is held down by the…

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  • Vickers Displacement Piston Motor MFD35
    Vickers Displacement Piston Motor MFD35
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    Vickers Displacement Piston Motor MFD35   This gives a breakdown with model and parts numbers. Also, how it is to be put back together. This is helpful when you are repairing or rebuilding a unit. And for ordering parts. It is also good to have this when you are talking to a technician, it can…

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  • Cooling Circuit on a Sundstrand Sauer Danfoss Series 20
    Cooling Circuit on a Sundstrand Sauer Danfoss Series 20
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    Sundstrand Sauer Danfoss Series 20 Cooling Circuit When excess cooling oil that comes from the manifold charge pressure relief valve after it goes into the motor case, and it flows thru the case drain lines to the pump case. The cooling oil is transferred thru each of the hydraulic elements in the series to help…

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