6. Locate the cylinder block in the approximate center of the housing opening.
Tip the housing until the endcap mounting surface is level to help keep the block centered. Do not
allow pistons or synchronizing shaft rollers to fall out of position
7. Using petroleum jelly, install the valve segment (B05) into the end cap so the segment spindle
engages the setting lug in the servo piston.
8. Orient the valve segment so the hole at the edge is aligned with the loop-flushing valve drain hole in
the end cap.
9. Locate the valve segment and servo piston in the approximate center of their travel.
Bearing plate and valve segment
B50
C10
B05
G34
B50
C20
SAE flange version shown
(cartridge version similar)
G32
End cap
(typical side port
configuration shown)
G60
P104 105
see page 30
Endcap installation
1. Rotate the motor shaft and check for play between the shaft and cylinder block. Any play indicates
that the synchronizing shaft rollers are not installed correctly.
2. Install the end cap assembly and valve segment so the spindle engages the bearing in the cylinder
block.
Caution
Do not allow the pistons or synchronizing shaft rollers to fall out of position.
3. Install screws (G32) and (G34) to retain the end cap assembly to the motor.
Install the screws in their proper locations to ensure adequate thread engagement. The internal
spring (in the motor shaft) will hold the end cap away from the housing a short distance.
Repair Instructions
Series 51 and 51-1 Bent Axis Motors Repair Instructions
Assembly
30 11009449 • Rev BA • December 2014
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