Toro Groundsmaster 3280-D Service Manual page 185

Removing the Hydraulic Pump
Installing the Hydraulic Pump
Groundsmaster ® 3280-D/3320
05138SL Rev B
Before opening the hydraulic system, operate all the hydraulic
controls to release system pressure and avoid injury from the
pressurized hydraulic fluid; refer to
Hydraulic System (page
1. Park the machine on a level surface, set the parking brake, lower the cutting
deck (or implement), shut off the engine, and remove the key from the key
switch.
2. Remove the operator seat; refer to
3. Remove the fuel tank; refer to
4. Read the General Precautions for Removing and Installing the Hydraulic
System Components (page
5. Clean the hydraulic pump, front axle, and all hydraulic connections to prevent
hydraulic system contamination.
6. For assembly purposes, label all the hydraulic connections.
7. Disconnect the hoses and tubes from the fittings on the hydraulic pump.
Allow the hydraulic lines to drain into a suitable container.
8. Install clean caps or plugs on the openings of pump and disconnected lines
to prevent contamination.
9. Remove the hydraulic pump driveshaft; refer to
(Machine Serial Number above 316000000) (page
10. Remove the cotter pin and flat washer that retain the traction rod end to
the pump lever, and remove the traction rod from the lever. Disconnect the
wire harness electrical connector from the traction neutral sensor; refer to
Traction Neutral Arm Assembly (Machine Serial Number above 316000000)
(page 5–105).
11. Remove the 2 flange-head screws (item 3 in
flange nuts that secure the hydraulic pump to the pump bracket.
Ensure that you do not damage the machine components while
removing the hydraulic pump.
12. Carefully remove the hydraulic pump from the machine.
13. If necessary, remove the hydraulic fittings from the pump. Note the
orientation of the fittings for assembly purposes.
14. Remove and discard all the O-rings from the hydraulic hoses, tubes, and
fittings that were removed.
1. If the hydraulic fittings were removed from the pump, lubricate and install new
O-rings to the fittings. Install the fittings into the pumps; refer to
Hydraulic Fittings (SAE Straight Thread O-Ring Fitting into the Component
Port) (page 5–11).
CAUTION
Releasing Pressure from the
5–6).
Removing the Operator Seat (page
Removing the Fuel Tank (page
5–77).
IMPORTANT
Page 5–101
4–16).
Hydraulic Pump Driveshaft
5–97).
Figure 87), 2 washers, and 2
Installing the
Hydraulic System: Service and Repairs
7–20).