3. Observe pressure gauges. If necessary, turn adjusting screw (D015) to reduce pressure differential.
EDC adjustment is very sensitive. Be sure to hold the hex wrench steady while loosening the locknut.
Total adjustment is less than 120 degrees.
Control Adjustment
Adjusting screw
4 mm
Locknut
13 mm
12 N•m [9 lbf•ft]
Servo pressure gauge port M5
0 - 50 bar [0 - 1000 psi]
3/16 in
19 N•m [14 lbf•ft]
Servo pressure gauge port M4
0 - 50 bar [0 - 1000 psi]
3/16 in
19 N•m [14 lbf•ft]
P108773
4. Rotate the neutral adjusting screw (D015) clockwise until the pressure increases on the gauge. Note
the angular position of the wrench. Then rotate the neutral adjusting screw counterclockwise until
the pressure increases by an equal amount on the other gauge. Again note the angular position of
the wrench.
5. Rotate the neutral adjusting screw clockwise half the distance between the wrench positions noted
above. The gauges should read the same pressure, indicating that the control is in its neutral position.
6. Hold the neutral adjusting screw stationary and tighten the locknut (D060). Torque to 12 N•m [9
lbf•ft]. Do not over torque the nut.
7. When the neutral position is set, stop the prime mover, remove the gauges, and install the gauge
port plugs. Reconnect the external control input.
A small pressure differential of 1.5 bar [22 psi] or less is acceptable. Zero differential is usually not
possible.
Service Manual
Series 40 M46 Variable Pumps
Adjustments
26 |
©
Danfoss | September 2017
11026743 | AX00000027en-US0202