Toro Groundsmaster 4300-D Service Manual page 165

Removing the Hydraulic Pump Assembly (continued)
Groundsmaster ® 4300-D
16226SL Rev C
1. Park the machine on a level surface, set the parking brake, lower the cutting
decks, and shut off the engine. Remove the key from the key switch.
2. Read the General Precautions for Removing and Installing the Hydraulic
System Components (page
3. Clean the traction and gear pump assembly and all hydraulic connections to
prevent hydraulic system contamination.
4. For assembly purposes, label all the hydraulic connections.
5. Disconnect the hoses and tubes from the fittings on the traction and gear
pump assembly. Allow the hydraulic lines to drain into a suitable container.
6. Install clean caps or plugs on the openings of pumps and disconnected lines
to prevent contamination.
7. Remove the hydraulic pump driveshaft; refer to
Pump Driveshaft (page
8. Separate the traction cable assembly from the traction pump
follows:
A. Remove the flange nut (item 7 in
damper to the traction cable bracket.
B. Remove the bolt (item 5 in
secure the traction cable to the pump lever.
C. Loosen the 2 jam nuts that secure the traction cable to the traction cable
bracket.
D. Position the traction cable assembly away from the pump assembly.
9. Disconnect the wire harness electrical connector from the traction neutral
switch.
The weight of the pump assembly is approximately 30.5 kg (67 lb).
Ensure that the lift or hoist can support the total weight of the pump
assembly before removing the bolts from the pump assembly and
frame.
10. Connect a lift or hoist to the hole in the traction cable bracket on the traction
pump to support the pump assembly and for pump removal.
11. Loosen and remove the 2 carriage screws (item 22 in
nuts that secure the pump support bracket to the frame.
12. Remove the 2 flange-head screws (item 38 in
that secure the traction pump flange to the machine frame.
Ensure that you do not damage the machine components while
removing the pump assembly.
13. Carefully lift the pump assembly from the machine.
4–87).
4–98).
Figure
Figure 86), flat washers, and locknut that
CAUTION
IMPORTANT
Page 4–103
Removing the Hydraulic
(Figure
86) that secures the lever
Figure 84) and 2 flange
Figure 84) and 2 flange nuts
Hydraulic System: Service and Repairs
86) as