Two Connection Hydraulic Proportional Control For "Dual Path" Vehicles (Type Hc) - Sauer Danfoss 51 Series Service Manual

Bent Axis Variable Displacement Motors
Minor Repair and Replacement - Variable Motor (Continued)
51000103
Fig. 50-69 - Remove
HC Control Bleed
Valve
51000176
Fig. 50-71 - Install
HC Control Bleed
Valve Seal Nut
51000123
Fig. 50-73 - Install
Servo Pressure
Shuttle Ball Valve
51000105
Fig. 50-75 - Install
Control Pressure
Shuttle Spool
64
51000175
Fig. 50-70 - Install
HC Control Bleed
Valve
51000104
Fig. 50-72 - Remove
Servo Pressure Ball
Shuttle Valve
51000174
Fig. 50-74 - Torque
Servo Pressure
Shuttle Ball Seat
51000122
Fig. 50-76 - Torque
Shuttle Spool Plugs
Two Connection Hydraulic Proportional
Control for "Dual Path" Vehicles (Type HC)
Bleed Valve
Loosen the seal lock nut on the bleed valve with a 10
mm hex wrench, and remove the valve with a 4 mm
internal hex wrench.
Install the bleed valve and torque to 3 Nm (27 in•lbsf).
Install the seal lock nut and torque to 19 Nm (14
ft•lbsf).
Servo Pressure Shuttle Valve
Remove the servo pressure shuttle plug with an
11⁄16" hex wrench. Remove the shuttle ball seat with
a 5 mm internal hex wrench and remove the ball.
Install the servo pressure shuttle ball.
Install the shuttle ball seat and torque to 11 Nm (8
ft•lbsf). Install the shuttle passage plug and torque to
37 Nm (27 ft•lbsf).
Control Pressure Shuttle Valve
Remove the shuttle spool plugs with a 1/4" internal
hex wrench. Remove the control pressure shuttle
spool.
Install the control pressure shuttle spool.
Install the shuttle spool plugs and torque to 20 Nm (15
ft•lbsf).
Series 51
50 - 14