General Information 6 - Toro GroundsmasterR 4300-D Service Manual

9. Loosen and remove two (2) carriage screws (item
12) and flange nuts (item 15) that secure pump support
bracket (item 8) to frame.
10.Remove two (2) flange screws (item 3) and flange
nuts (item 9) that secure traction pump flange to ma-
chine frame.
IMPORTANT: Make sure to not damage machine
components while removing the pump assembly.
11. Carefully lift pump assembly from the machine.
12.Separate traction and gear pumps (Fig. 70):
A. Remove two (2) socket head screws, lock wash-
ers and flat washers that secure gear pump to trac-
tion pump.
B. Remove gear pump from traction pump. Locate
and discard O--ring from between pumps.
C. If necessary, remove two (2) lock nuts that secure
pump support bracket to gear pump. Remove brack-
et and two (2) flat washers from gear pump.
13.If necessary, remove hydraulic fittings from pumps.
Note orientation of fittings for assembly purposes.
14.Remove and discard all O--rings from removed hy-
draulic lines and fittings.
Installation (Fig. 67)
1. If fittings were removed from pumps, lightly lubricate
new fitting O--rings with clean hydraulic oil. Install fittings
with O--rings to the pumps (see Hydraulic Fitting Instal-
lation in the General Information section of this chapter).
Orientate fittings as noted during removal.
2. Assemble traction and gear pumps (Fig. 70):
A. Lubricate and position new O--ring between
pumps.
B. Position gear pump to traction pump and secure
with two (2) socket head screws, lock washers and
flat washers.
C. If pump support bracket was removed from gear
pump, fit flat washers and bracket to gear pump and
secure with two (2) lock nuts.
IMPORTANT: Make sure to not damage machine
components while installing the pump assembly.
3. Carefully lower pump assembly to machine frame.
4. Secure pump assembly to machine frame with two
(2) flange screws and flange nuts.
Hydraulic System
6
7
9
1. Traction pump
2. O- -ring
3. Flat washer (2 used)
4. Lock washer (2 used)
5. Socket screw (2 used)
5. Secure pump support bracket to inside of frame
bracket with two (2) carriage screws (item 12) and
flange nuts (item 15).
6. Install hydraulic hoses to fittings on pump assembly
in positions noted during removal (see Hydraulic Hose
and Tube Installation in the General Information section
of this chapter).
7. Connect machine wire harness electrical connector
to traction neutral switch.
8. Secure traction cable assembly to traction pump
(Fig. 69):
A. Position traction cable assembly to pump assem-
bly.
B. Secure traction lever bracket (item 12 in Fig. 69)
to pump lever with cap screws (items 7 and 13 in Fig.
69) and lock nut (item 8 in Fig. 69).
C. Secure lever damper (item 14 in Fig. 69) to trac-
tion cable bracket with flange nut (item 4 in Fig. 69).
D. Secure traction cable to traction cable bracket
(item 6 in Fig. 69) with jam nuts.
9. Install hydraulic pump drive shaft (see Hydraulic
Pump Drive Shaft Installation in this section).
10.Check oil level in hydraulic reservoir and add correct
oil if necessary.
11. Follow Hydraulic System Start--up procedures (see
Hydraulic System Start--up in this section).
12.Check traction drive for neutral and traction neutral
switch operation. Adjust if necessary.
Page 4 - - 70
3
4
5
2
8
Figure 70
6. Gear pump
7. Flat washer (2 used)
8. Pump support bracket
9. Lock nut (2 used)
Groundsmaster 4300--D
1