Be sure to install the slipper retainer (C20) so it mates correctly with the ball guide (C15) (concave side
of the slipper retainer against the convex side of the ball guide).
Cylinder Kit Installation
1. Position pump with shaft pointing down.
2. Insert the cylinder block kit onto the shaft. While holding the shaft, slightly rotate the cylinder block
kit to help start the shaft splines over the ball guide and align it with the block splines.
Install cylinder block
E101 421E
Prevent shaft
from rotating
Slightly rotate
cylinder block
C010
Timing Pin and Endcap Bushing Installation
1. Install timing pin (C020) in endcap as shown. Orient slot away from valve plate. Install the alignment
pins (B010) in housing. Measure pin insertion depth to verify proper pin insertion.
2. Orient endcap bushing slots towards top or bottom of endcap. Lubricate and press the bushings
(G550) into the end cap to depth shown below.
Timing pin installation
P106 251E
C020
4.45 0.25 mm
[0.175 0.01 in]
+-
+-
Slot
orientation
Ensure that bushing is properly installed. Improper installation resulting in improper depth or
misalignment will result in premature bushing and charge pump failure.
Repair Instructions
H1 45/53/60/68 Closed Circuit Axial Piston Pumps
Assembly
520L0957 • Rev CB • September 2014
35
