6. Install the cylinder block and its support pin (C40) on to the pistons and synchronizing shaft.
Pistons
Position the motor shaft
as shown prior to installing
the cylinder block
P104 103
(Cylinder block not installed)
The synchronizing shaft rollers (C50) enter their races in the block, while each piston enters its
corresponding bore in the block.
7. Insert a brass rod through the cylinder block kidneys to guide the pistons into position.
8. Start with the four (4) pistons closest to the lowest part of the end cap mounting surface.
9. After the 4 pistons enter their bores, tilt the cylinder block so the synchronizing shaft rollers (C50)
enter their races in the cylinder block and the next two pistons enter their bore.
The support pin (C40) enters its recess in the synchronizing shaft (C60).
10. Lift the cylinder block slightly.
11. Guide the remaining 3 pistons into their bores.
12. After the last piston is in position, check the position of the rollers closest to the minimum angle stop.
13. Maintain an inward force on the cylinder block.
14. Carefully push it toward the highest part of the end cap mounting surface.
15. Check that all of the synchronizing shaft rollers are in position.
If the cylinder block is properly installed, there will be very little rotational free-play between the
cylinder block and the motor shaft.
Repair Instructions
Series 51 and 51-1 Bent Axis Motors Repair Instructions
Assembly
28
11009449 • Rev BA • December 2014