Hydraulic Proportional Control With Maximum Angle Over-Ride (Types H1•H2 Or K1•K2) - Sauer Danfoss 51 Series Service Manual

Bent Axis Variable Displacement Motors
Minor Repair and Replacement - Variable Motor (Continued)
Hydraulic Proportional Control with
Maximum Angle Over-ride (Types H1•H2 or
K1•K2)
Thoroughly clean external surfaces prior to removing
the control.
The solenoid may be removed from the valve by
removing the nut with a 3/4" hex wrench.
The solenoid valve may be removed from the control
valve housing with a 7/8" hex wrench.
Remove the screws retaining the valve housing to the
multi-function block with a 4 mm internal hex wrench.
Remove the valve housing.
The plugs on the control housing may be removed
with an 11/16" hex wrench. When reinstalling, torque
the plugs to 37 Nm (27 ft•lbsf).
Install new O-rings onto the valve housing.
Install the valve housing onto the multi-function block,
and install the screws. Torque the screws to 6.4 Nm
(4.7 ft•lbsf).
When installing the solenoid valve into the valve
housing, the valve should be torqued to 20 Nm (15
ft•lbsf).
When installing the solenoid onto the valve, torque
the nut to 15 Nm (11 ft•lbsf.).
50 - 11
51000089
Fig. 50-52 - Remove
H1•H2 or K1•K2
Control Solenoid
Fig. 50-54 - Remove Control Housing
Screws
Fig. 50-55 - H1•H2 and K1•K2 Control
Components
51000092
Fig. 50-56 - Install
Solenoid Valve
Series 51
51000090
Fig. 50-53 - Remove
Solenoid Valve
51000091
51000021
51000093
Fig. 50-57 - Install
Solenoid
61