Sauer Danfoss 51 Series Service Manual page 72

Bent Axis Variable Displacement Motors
Minor Repair and Replacement - Variable Motor (Continued)
51000138
Fig. 50-119 - Remove
Servo Pressure
Supply Spool Plug
Fig. 50-121 - Multi-function Block with
Servo Pressure Supply Shuttle Spool
51000139
Fig. 50-122 - Install
Servo Pressure
Supply Shuttle Spool
72
51000139
Fig. 50-120 - Remove
Servo Pressure
Supply Shuttle Spool
51000030
51000140
Fig. 50-123 - Torque
Servo Pressure
Supply Spool Plug
Servo Pressure Supply Shuttle Spool
Remove the servo pressure supply shuttle spool plug
from the multi-function valve with a 9/16" hex wrench.
NOTE: If a pressure compensator valve block is
installed, the opposite end of the shuttle
spool bore in the multi-function valve is
plugged with an internal hex head plug lo-
cated under the valve block. If a pressure
compensator valve block is not installed, the
opposite end of the shuttle spool bore is
plugged with a hex head plug.
Remove the servo pressure supply shuttle spool from
the multi-function valve block.
Inspect the shuttle spool for burrs or scoring. The
spool must slide free in its bore. The shuttle ball in the
spool must be free to move.
Install the shuttle spool into the multi-function block.
Install the hex head plug into the multi-function valve
and torque to 37 Nm (27 ft•lbsf).
NOTE: If an internal hex head plug was removed
from the opposite end of the shuttle spool
bore, torque it to 20 Nm (15 ft•lbsf).
Series 51
50 - 22