Service Manual
Series 45 J Frame Open Circuit Axial Piston Pumps
520L0607
• Rev AI • Sep 2013
16
Caution
Incorrect shaft alignment may
result in damage to drive
shaft, bearings, or seal which
can cause external oil leakage.
Install Start-up Procedures
General
Start-up Procedure
1. Connect the pump to the prime mover. Ensure that pump shaft is properly aligned with the shaft
of the prime mover.
2. Fill the reservoir with recommended hydraulic fluid. Always filter fluid through a 10 micron filter
pouring into the reservoir. Never reuse hydraulic fluid.
3. Fill the main pump housing with clean hydraulic fluid. Pour filtered oil directly into the upper most
case drain port.
4. Fill the inlet line leading from the pump to the reservoir. Check the inlet line for properly tightened
fittings and be certain it is free of restrictions and air leaks.
5. To ensure the pump stays filled with oil, install the case drain line in the upper most case drain
port.
6. Install a gauge at port M1 to monitor system pressure during start up.
Follow recommendations in the vehicle/machine operator’s manual for prime mover start up
procedures.
7. While watching the pressure gauge installed at M1, jog the prime mover or run at the lowest
possible speed until system pressure builds to normal levels (minimum 11 bar [160 psi]). Once
system pressure is established, increase to full operating speed. If system pressure is not
maintained, shut down the prime mover, determine cause, and take corrective action. Refer to
Troubleshooting
, page 18.
8. Operate the hydraulic system for at least fifteen minutes under light load conditions.
9. Check and adjust control settings as necessary after installation. Refer to
Adjustments
, page 21
.
10. Shut down the prime mover and remove the pressure gauge. Replace plug at port M1.
11. Check the fluid level in the reservoir; add clean filtered fluid if necessary.
12. The pump is now ready for operation.
Follow this procedure when starting-up a new Series 45 installation or when restarting an
installation in which the pump has been removed.
Warning
Unintended movement of the machine or mechanism may cause injury to the technician or
bystanders. To protect against unintended movement, secure the machine or disable / disconnect
the mechanism while servicing.
Prior to installing the pump, inspect for damage incurred during shipping. Make certain all system
components (reservoir, hoses, valves, fittings, heat exchanger, etc.) are clean prior to filling with
fluid.