Figure 4-14. Cylinder Block Kit
Install locating pins in neck end of cylinder block.
Place the washer on the three pins. Install the retaining ring guide on the washer.
Place retaining ring over retaining ring guide. The guide should protrude through the center of the
retaining ring. Make certain the washer remains centered under the retaining ring guide.
Lubricate each of the pistons with clean hydraulic oil and install through the retaining ring and into the
Slide the cylinder block assembly (10, figure 4-12) onto the shaft (30) and against the thrust plate (14). Use care
that the washer and retaining guide do not come off the locating pins.
When properly installed, a spring load can be felt when pushing against the cylinder block.
Stand the unit vertically with the shaft seal (27) down to insure all parts remain in position. Then rotate the
cylinder block two or three times to confirm that the piston slippers are completely in contact with the thrust plate.
Install the tapered bearing (8) on the pump shaft (30) with an arbor type press for the most satisfactory results.
The bearing must not be driven onto the shaft. Press against the inner race of the bearing and use care not to
damage the roller cage.
The bearing must be pressed on until it rests on the shoulder of the shaft to insure adequate