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MAINTENANCE
VERSA PRO 03/09 Maintenance Section 5-13
© 2009 Alamo Group Inc.
MAINTENANCE
REPLACING HYDRAULIC PUMPS
The pump unit for the power circuit is a piston fixed displacement pump (see specifications) and is PTO driven.
It is mounted on the mainframe above the hydraulic reservoir. There is a separate pump for each wing. By
following the hose routing, the operator can determine each wing mower's supply source. Each pump has a
case drain to eliminate excessive fluid in the pump. All excess fluid in the pump is routed back to the reservoir
through the case drain.
Replacing Outer Pump:
1. Remove the Pump Cover by unscrewing the wing nut which holds it in place.
2. Disconnect the outer Pump Suction Hose, Case Drain Hose, and the Pressure Hose.
NOTE: Clean spills at once. Cap all hoses immediately to prevent contamination of the hydraulic system.
3. Remove the two bolts which attach the outer pump to the inner pump flange.
4. Remove Pump. Lightly oil new "O" Ring and place on inner pump flange. Install the new Pump with the
pump drain ports facing Hydraulic Tank.
5. Reinstall hydraulic hoses. Tighten hose fittings to their proper torque. Refer to Torque Chart.
6. Reinstall Pump Cover and tighten the four thumb screws securely.
Replacing Inner Pump:
7. To replace inner pump both pumps must be removed. Follow same procedure as for outer pump. BE
SURE TO CAP ALL HOSES AND CLEAN OIL SPILLS AT ONCE.
NOTE: Clean spills at once. Cap all hoses immediately to prevent contamination of the hydraulic system.
8. Separate the inner pump from the outer pump and install new pump to inner pump following step 4
making sure both case drain ports are facing hydraulic reservoir.
9. Reinstall pumps to pump mounting bracket.
10. Reinstall all hoses. Tighten hose fittings to their proper torque refer to torque chart.
11. Reinstall all guards.