Pressure limiter valve adjustment - Counterclockwise
P109553
060/068
A
B
1
2
3
Counterclockwise
rotation
4
C
D
Legend
Item
Description
Torque
Controls port
1
Pressure limiter adjusting
valve
20 Nm [15 lb•ft]
A
2
Pressure limiter adjusting
valve
20 Nm [15 lb•ft]
B
3
Pressure limiter adjusting
valve
20 Nm [15 lb•ft]
D
4
Pressure limiter adjusting
valve
20 Nm [15 lb•ft]
C
A, B, C, D
Pressure port
-
-
If you change pressure limiter settings, you must also change the HPRV valve to maintain proper PL
function. Refer to table on next page for corresponding settings.
2. Start the prime mover and operate at normal speed.
3. Use a 14 mm wrench to loosen the locking nut (L024).
4. Activate the control input until pressure in the high side of the system loop stops rising. This pressure
is the PL setting.
5. Return the pump to neutral and adjust the PL setting using an internal hex wrench. Wrench size is in
the diagram on the previous page. Turn the adjusting screw clockwise to increase the PL setting,
counter clockwise to decrease it. The adjustment is very sensitive. Change per turn is approximately
150 bar [2176 psi].
Change per turn is 150 bar/rev [2176 psi/rev].
Service Manual
H1 45/53/60/68 Tandem Closed Circuit Axial Piston Pumps
Adjustments
©
Danfoss | June 2018
520L0928 | AX00000103en-US0303 | 37