Toro Greensmaster TriFlex 3300 Service Manual page 119

Piston Pump Removal (Fig. 44)
1. Park machine on a level surface, engage the parking
brake, lower the cutting units and stop the engine. Re-
move key from the ignition switch.
CAUTION
Before continuing further, read and become fa-
miliar with General Precautions for Removing
and Installing Hydraulic System Components in
this section.
2. Disconnect the traction control cable ball joint (item
20) from the pump lever. Loosen traction control cable
jam nuts that secure traction control cable to the cable
support. Position cable away from the pump assembly.
3. On machines with gasoline engine, remove two (2)
cap screws, coupling spacers and flange nuts that se-
cure pump hub to rubber coupling (Fig. 45).
4. Thoroughly clean hydraulic hose ends and fittings on
gear and piston (traction) pumps to prevent hydraulic
system contamination.
5. Label all hydraulic hose connections on gear and
piston pumps for assembly purposes.
6. Clamp pump suction hose (item 9) to prevent drain-
ing the hydraulic reservoir.
7. Loosen hose clamp and remove suction hose from
the gear pump.
8. Disconnect hydraulic hoses from fittings on pump
assembly. Allow hoses to drain into a suitable container.
Plug hoses and fittings to prevent contamination.
CAUTION
Support the gear and piston pump assembly
when removing its supporting fasteners to pre-
vent it from falling and causing damage or per-
sonal injury.
9. Support pump assembly to prevent it from falling.
10.Remove two (2) cap screws (item 23) and flat wash-
ers (item 24) that secure pump assembly to pump
mount. Separate pump assembly from the pump mount
and remove pump from machine.
11. If necessary, remove pump hub (Greensmaster
3300 machines shown in Figure 45) or coupling (Green-
smaster 3400 shown in Figure 46). Locate and retrieve
key from pump shaft.
Greensmaster 3300/3400
12.Separate gear pump from the piston pump (see Gear
Pump Removal in this section).
IMPORTANT: If fittings are going to be removed
from piston pump, note position of fittings for as-
sembly purposes.
13.If fitting removal from piston pump is necessary,
mark hydraulic fitting orientation to allow correct assem-
bly. Remove hydraulic fittings and O--rings from piston
pump. Discard removed O--rings.
2
9
3
GREENSMASTER 3300
1. Piston pump
2. Cap screw (2 used)
3. Flat washer (2 used)
4. Coupling spacer (2 used)
5. Pump mount
6. Cap screw
2
3
GREENSMASTER 3400
1. Piston pump
2. Cap screw (2 used)
3. Flat washer (2 used)
4. Coupling
5. Cap screw
Page 5 - - 67
Loctite #242
27 to 33 ft- -lb
(37 to 44 N- -m)
1
11
7
6
10
4
5
Figure 45
7. Spacer
8. Flange nut (2 used)
9. Cap screw (2 used)
10. Pump hub
11. Key
12. Rubber coupling
Loctite #242
27 to 33 ft- -lb
(37 to 44 N- -m)
1
9
8
6
5
4
Figure 46
6. Spacer
7. Engine coupling flange
8. Bell housing
9. Key
Hydraulic System
12
8
7