Control neutral adjustment
Locknut
13 mm
Neutral adjusting screw
4 mm
P106 145E
10 N•m
[7 lbf•ft]
Servo pressure gauge port M5
Servo pressure gauge port M4
0 - 50 bar [0 - 1000 psi]
3/16 in
19 N•m [14 lbf•ft]
0 - 50 bar [0 - 1000 psi]
3/16 in
Servo pressure gauge port M4
0 - 50 bar [0 - 1000 psi]
3/16 in
Servo pressure gauge port M5
0 - 50 bar [0 - 1000 psi]
3/16 in
19 N•m [14 lbf•ft]
19 N•m [14 lbf•ft]
19 N•m [14 lbf•ft]
1. Install a 50 bar [1000 psi] gauge in each of the two servo gauge ports (M4 and M5).
2. Disconnect the external control input (electrical connections) from the control.
3. Start the prime mover and operate at normal speed.
4. Use a 4 mm internal hex wrench to hold the neutral adjusting screw (D015) stationary while
loosening the locknut (D060) with a 13 mm wrench.
5. Observe pressure gauges and if necessary, turn adjusting screw (D015) to reduce pressure differential.
Adjustment of the EDC is very sensitive. Be sure to hold the hex wrench steady while loosening the
locknut. Total adjustment is less than 120 degrees.
Neutral Adjustment (EDC) (bottom view)
Solenoid shaft
Feedback pin
Adjusting
screw
(cam)
P106 046E
Maximum
adjustment
less than 120°
Control spool
Illustration shows how cam on adjusting pin rotates to adjust for neutral position after pump is re-
installed.
6. Rotate the neutral adjusting screw clockwise until the pressure increases on the gauge.
Note the angular position of the wrench.
Service Manual
H1P 069—H1P 280 Axial Piston Single Pumps
Adjustments
©
Danfoss | January 2021
AX152886482551en-000601 | 39