7. Tip and rotate the synchronizing shaft in all directions to check for binding. The synchronizing shaft
rollers must move freely in the races in the motor shaft.
Cylinder block and sync-shaft
Q20
Cylinder
block
C40
C40
C60
C50
P104 102
C60
C50
Cylinder block
1. Lubricate the pistons and sync-shaft and rollers with clean hydraulic oil and rotate the shaft to the
position shown in the illustration.
2. Tip the 3 pistons closest to the minimum angle stop out, toward the housing.
3. Tip the 6 remaining pistons forward toward the lowest part of the end cap mounting surface.
4. Tip the synchronizing shaft forward toward the lowest part of the end cap mounting surface.
5. Position the cylinder block so one synchronizing shaft roller raceway is aligned between two pistons.
Repair Instructions
Series 51 and 51-1 Bent Axis Motors Repair Instructions
Assembly
11009449 • Rev BA • December 2014 27
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