Parker P1/PD Series User Manual

Parker Hannin Corporation
Hydraulic Pump and Power Systems Division
Marysville, Ohio USA
Bulletin HY28-2708-02/SVC/EN | July 2019
Medium Pressure Axial Piston Pumps
P1/PD B-mod Service Information
43
Any seals that were removed during disassembly, including the shaft seal, should be
replaced. For major overhauls, all plugs should be removed and their O-rings replaced.
Assembly should be performed in a clean work environment.
Do not use bearing grease during installation. Grease does not dissolve in hydraulic
oil and may plug orices or lters in the system. Clean petroleum jelly is preferred to
lubricate O-rings and seals and to adhere parts for assembly.
NOTE: For uids other than petroleum based hydraulic oil, insure that the petroleum
jelly is compatible with the uid. If not compatible, another product should be used
instead.
1. Make sure new parts are clean, or if re-using parts, make sure they are
thoroughly cleaned.
2. Inspect all bearing surfaces and seal areas to ensure that they are free from
nicks, dings, scratches, or rust.
3. Use tool T7 to press the front shaft bearing cup (#33) into the bottom of
the housing. Make sure the cup is seated rmly against the bottom of the
housing.
4. Turn housing over and use tool T1 to press the shaft seal (#39) into the seal
bore of the housing. Install the snap ring (#40) into the groove in the seal
bore.
5. Use tool T8 to press the rear shaft bearing cup (#18) into the port block (#3).
Insure that the cup is seated rmly against the bottom of the casting. Install
the front shaft bearing cone (#32) and shaft (#28) into the housing. Tool T3
can be used to help protect the shaft seal from damage from the splines
when installing the shaft. Install the rear shaft bearing cone (#19) on the shaft.
6. Mount the port block (#3) onto the housing (#35) using the four socket head
cap screws (#1), and tighten to 20 ft-lbs +/- 1 ft-lb.
7. Position the pump so the shaft end is up and lay a parallel bar on the pump
mounting ange pilot. Press down on the shaft and rotate the shaft 3-5
times then measure the height of the shaft end to the parallel bar using dial
calipers or a dial indicator. Grasp the shaft and pull it up and rotate the shaft
3-5 times. Measure the height of the shaft end to the parallel bar. See Figure
9. Subtract the larger number from the smaller to get the gap differential.
Repeat this step three times, and calculate the average gap differential of the
three measurements.
NOTE: If the shaft slips or falls, this step must be repeated to get an accurate
measurement.
8. Based on the average gap differential, use the shim chart to determine the
correct shim (#17) to install in the pump.
9. Verify the correct shim (#17) was selected by rebuilding the pump with the
shaft bearings, shaft, and selected shim. Install the shaft bearing cone (#32).
Next, insert the shaft (#28) into the housing (#35) through the cone. Place the
shim over the shaft, and then install the port block bearing cone (#19) over
the shaft. Finally, install the port block (#3) onto the housing and pull on the
shaft to check for any shaft end play or excessive movement.
10. Remove the port block (#3) from the housing. Then remove the port block
bearing cone (#19) and shim (#17) and continue with the rest of the assembly.
Pump Assembly Procedures
060, 075, 085, 100, 140 Assembly Procedures

Parker P1/PD Series Specifications

General

Brand	Parker
Model	P1/PD Series
Category	Water Pump
Language	English