Multi-function valve pressure adjustment
You accomplish adjustment of the pressure limiter setting and the high pressure relief valve (HPRV)
setting simultaneously. The HPRV setting is automatically set approximately 35 bar [500 psi] above the
pressure limiter setting.
Lock the motor output shaft by locking the vehicle’s brakes or rigidly fixing the work function so it cannot
rotate or cap the system ports.
W
Warning
Take necessary precautions that the motor shaft remains stationary during the adjustment procedure.
Multi-function valve adjustment
Charge pressure gauge port M3
System pressure gauge port M2
G
B
t
G
B
t
0 - 1000 bar [0 - 10000 psi]
9/16-18
23 N•m [17 lbf•ft]
0 - 50 bar [0 - 1000 psi]
9/16-18
23 N•m [17 lbf•ft]
P106 168E
See appropriate table
System pressure gauge port M1
G
B
t
0 - 1000 bar [0 - 10000 psi]
9/16-18
23 N•m [17 lbf•ft]
Adjusting screw
Lock nut (smaller hex nut)
Lock nut torque
t
h
I
1. Install two 1000 bar (or 10 000 psi) pressure gauges in the high pressure gauge ports (M1 and M2).
Install a 50 bar (or 1000 psi) pressure gauge in the pump charge pressure gauge port (M3).
2. Start the prime mover and operate at normal speed.
3. Loosen locking nut.
4. Insert an internal hex wrench into the pressure adjusting screw.
A plastic dust plug is installed in the adjusting screw.
5. The model code shows the factory preset pressure limiter setting. It is referenced to charge pressure,
so the pressure limiter setting is the difference between the high and low pressure sides of the
system loop. Activate or move the control input so that pressure increases in the high pressure side of
the closed circuit to the pressure limiter pressure setting. The pressure limiter setting is reached when
the pressure stops increasing and remains steady at a given pressure level (as shown on the gauges).
Service Manual
Series T90 Axial Piston Pumps
Adjustments
©
Danfoss | March 2020
AX216086485386en-000101 | 31