Pressure Limiter Adjustment
Lock motor output shaft to adjust the pressure limiter setting. Lock the vehicle’s brakes or rigidly fix the
work function so it cannot rotate.
Pressure limiter adjustment
System pressure gauge port MB
(on bottom)
Pressure limiter
adjusting screw
Pressure limiter
locknut
P104 465E
System pressure gauge port MA
0 - 600 bar [0 - 10,000 psi]
1/4 in
24 N•m [18 lbf•ft]
0 - 600 bar [0 - 10,000 psi]
1/4 in
24 N•m [18 lbf•ft]
Charge pressure gauge port M3
0 - 50 bar [0 - 1000 psi]
1/4 in
24 N•m [18 lbf•ft]
HPRV
Endcaps are different for clockwise and counter clockwise rotation.
Clockwise and counter clockwise rotation
Port B
System
pressure
Port A
System
pressure
Counterclockwise rotation
Pressure limiter valves
Controls
Port B
Controls
Port A
Port B
System
pressure
Port A
System
pressure
Clockwise rotation
Pressure limiter valves
Controls
Port A
Controls
Port B
* Clockwise rotation as seen from
shaft end of pump
*
* Counterclockwise rotation as seen
from shaft end of pump
*
If you change pressure limiter settings, you must also change the HPRV valve to maintain proper PL
function. Refer to table below for corresponding settings.
Pressure limiter setting (bar)
PL setting
150
180
200
230
250
280
300
330
350
380
400
410
420
430
440
450
460
470
480
HPRV
setting
200
230
250
280
300
330
350
380
400
420
450
480
510
1. Install 600 bar [10 000 psi] pressure gauges in the high pressure gauge ports (MA and MB).
2. Install a 50 bar [1000 psi] pressure gauge in the charge pressure gauge port (M3).
Ensure charge pressure is properly set before checking pressure limiter.
3. Start the prime mover and operate at normal speed.
4. Use a 17 mm wrench to loosen the locking nut (L024).
Service Manual
H1P 045/053/060/068 Axial Piston Single Pumps
Adjustments
©
Danfoss | June 2020
AX152886481964en-000405 | 37
