Testing Testing Assembled Motor - Sauer Danfoss DH Series Assembly And Test Procedures

Testing Assembled Motor
DH and DS Motors
Assembly and Test Procedures
Testing
Hydraulic Fluid Specifications
Fluid type
Viscosity range
Oil cleanliness
Rotation
With the shaft pointing toward you and the system ports facing up, the motor must turn
to the right (clockwise) when supplying pressure to the right connection port.
Starting Pressure
With the motor disengaged and no outside load on the output shaft, slowly raise the
oil supply pressure until the motor starts.Then lower the differential pressure to the
limit shown in the table below (7 or 10 bar [102 or 145 psi]). Check that the motor is still
turning at this limit. If so the motor is good.
If the motor begins to turn below the specified pressure, the motor check is OK.
11065435 • Rev AD • October 2011
General Testing Conditions
Mineral hydraulic oil class HM, ISO 6743/4
35 ± 3 cSt
18/13 – contamination degree, ISO 4406
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