Inspection Instructions; Checking The High Pressure Relief Valve - Sauer Danfoss 20 Series Service Manual

INSPECTION
INSTRUCTIONS
CAUTION!
The relief valves are factory
set and should not be
disassembled further.
350 for 350 bar [5000 psi]
315 for 315 bar [4500 psi]
280 for 280 bar [4000 psi]
245 for 245 bar [3500 psi]
210 for 210 bar [3000 psi]
175 for 175 bar [2500 psi]
140 for 140 bar [2000 psi]
Series 20 – Axial Piston Motors
Service Manual and Repair Instructions
Trouble Shooting

Checking the high pressure relief valve

High pressure relief valve
103
Pressure on ports A or B in accordance to high pressure relief valve setting on the
opposite side to the port.
To check high pressure relief valve setting, pump should be driven under load by a prime
mover with rated speed.
Stroke control lever for five seconds in both directions to final position.
Pressure setting should be in accordance to machine specification.
DKMH.PS.330.C1.02 520L0534
When the problem occurs in one direc-
120
tion only, interchange the relief valve
cartridges to see if the problem changes
to the other direction. If so, one relief
valve cartridge is either malfunctioning
or does not have the proper setting.The
three (3) digits of the pressure setting
are stamped on the end of the cartridge.
Compare to machine specification.
F000 059
F000 059
F000 059
13