I.
Turn the unit on its side with the large control cavity on top and install the thrust plate (47). Lubricate the thrust
plate with clean hydraulic oil prior to assembly.
m.
Prior to reassembly of the cylinder block (37), inspect the pistons for contamination or excessively worn slipper
pads. If excessive wear is found, install a new cylinder block kit (32, 33, 34, 36 and 37).
NOTE
To install the cylinder block assembly (37), it is necessary to check the alignment of certain
parts. There is no special relationship of pistons (73) to bores, springs, etc. However, the
alignment of the ball guide (74) and cylinder block (34) splines is critical. The undersized
tooth in the spline of the cylinder block (34) must line up with the missing tooth in the ball
guide (74) spline. These in turn line up with a missing tooth on the shaft (45) spline. The hole
for the bearing plate locating pin (75) in the cylinder block (34) face is in line with the
undersize tooth in the cylinder block and provides an assembly guide.
n.
Lubricate the thrust plate (47), slippers (76), pistons (73) and bores with clean hydraulic oil. While holding the
shaft (45) on the external end, align the missing tooth of the shaft and ball guide (74) by sighting through the
control cavity. Using the locating pin (75) hole as a guide, slide the cylinder block assembly (37) onto the shaft
(45) and against the thrust plate (47). When properly installed a spring load can be felt when pushing against the
cylinder block (34).
o.
Set the pump vertically and install the spacer (36) into the center bore of the cylinder block (34).
p.
The tapered bearing (35) should be installed with an arbor type press for the most satisfactory results. This
bearing can not be driven onto the shaft due to the internal spring loading of the cylinder block and shaft. Press
on the inner race of the bearing and use care not to damage roller cage. The bearing must be pressed on until it
rests on the shoulder of the shaft to insure ¶ adequate bearing clearance.
q.
Install the pilot ring (33) in the bearing plate (32) and the locating pin in the cylinder block. Install the bearing
plate (32) so that the milled slot locates over the pin and the pilot ring (33) fits in the center bore of the cylinder
block (34). After installation, lubricate the exposed surfaces with clean hydraulic oil.
r.
Assemble the bearing race (29), shim (31) (if required) and locating pin (30) in the end cap (25). Check the
valve plate (28) to be certain it is a pump valve plate (has 2 tapered slots) and that it is for correct rotation (slots
point away from direction of rotation).
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