Section 6
Hydraulic System
20425603
5-2005/Rev 0
6-17
6. Place the flexible coupling on the motor coupling half. Follow Step 9 and 11 in the
previous procedure to determine if the coupling half on the hydraulic pump is properly
positioned. If necessary, adjust the position of the pump coupling half.
7. Place the hydraulic pump on the motor, ensuring the coupling teeth mesh into the flexible
coupling. Force should not be required.
8. Verify that the mating surfaces of the motor and pump meet without resistance from the
coupling.
9. Replace the pump mounting bolts and torque to 55 ft-lbs (75 Nm).
10. Position the motor and pump in the frame, aligning the vibration isolation mounts with the
mounting holes in the frame base plate. Attach the vibration isolation mounts to the frame
base plate.
11. Reconnect the electrical leads.
12. Complete steps 16-18 in the previous procedure.
13. Check the motor rotation. If the motor shaft is rotating in the wrong direction, reverse one
pair of motor leads.
14. Start the motor and apply full high pressure water pressure. Inspect for hydraulic leaks
and note any unusual sounds from the motor or pump assembly.
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