Control Neutral Adjustment
All functions of the Electric Displacement Control (EDC), are preset at the factory. If necessary, adjust the
pump to neutral with the pump running on a test stand or on the vehicle/machine with the prime mover
operating. If adjustment fails to give satisfactory results, you may need to replace the control or coils. See
Minor repair for details.
Control neutral adjustment
Servo pressure gauge port M
0 - 50 bar [0 - 1000 psi]
/16 in
19 N•m [14 lbf•ft]
4 mm
Adjusting screw
Locknut
13 mm
12 N•m [9 lbf•ft]
Servo pressure gauge port M5
0 - 50 bar [0 - 1000 psi]
/16 in
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.
Service Manual
H1T 045/053, 060/068 Axial Piston Tandem Pumps
Adjustments
50 |
©
Danfoss | September 2020 AX152886481761en-000405
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