5. After adjustment, verify proper maximum vehicle/machine speed. Readjust if necessary.
Displacement limiter adjustment
P106 626E
927
9/16 in
911
929
928
Swashplate neutral adjustment
With the pump properly plumbed, primed, and mounted on a vehicle or test stand, use this procedure to
adjust mechanical neutral. If pump is on a vehicle, securely block the wheels to prevent movement.
Measured data
•
System pressure at MA
•
System pressure at MB
•
Pressure differential between MA and MB (optional)
Pump Setup
1. Attach 600 bar [10,000 psi] gauge to system pressure gage ports MA and MB.
2. Using a hydraulic line and fittings, shunt the servo piston by connecting servo pressure ports (M4 and
M5).
Connecting servo ports M4 and M5 defeats the affect of any control pressure on the servo piston.
Service Manual
Series 40 M46 Variable Pumps
Adjustments
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©
Danfoss | September 2017
11026743 | AX00000027en-US0202