Toro Groundsmaster 3500 30807 Service Manual page 142

Piston Pump/Hydrostat
RIGHT
FRONT
4
5
6
7
1. Engine mount bracket
2. Flange nut
3. Flange screw
4. Pump mount plate
Piston Pump/Hydrostat Removal (Fig. 50 and 53)
1. Park machine on a level surface. Lower cutting units,
stop engine and engage parking brake. Remove key
from the ignition switch.
2. Raise and support hood.
WARNING
Before disconnecting or performing any work on
the hydraulic system, all pressure in the system
must be relieved. See Relieving Hydraulic Sys-
tem Pressure in the General Information section
of this chapter.
Hydraulic System
3
8
5. Hardened washer
6. 10 mm cap screw (4)
7. 8 mm cap screw (1)
1
2
10
9
Figure 53
3. Remove pump drive belt (see Drive Belt Removal in
this chapter).
4. Remove neutral arm assembly (see Neutral Arm Re-
moval in this chapter).
5. Thoroughly clean hydraulic hose ends and fittings on
piston pump/hydrostat and gear pumps to prevent hy-
draulic system contamination.
6. Disconnect the suction hose from the barbed fitting
on the bottom of the gear pump and drain hydraulic tank
into a suitable container.
7. Label all hydraulic hoses and fittings for assembly
purposes.
Page 5 − 84
8. Hardened washer
9. Long spacer (4)
10. Short spacer (1)
Groundsmaster 3500