Toro 3200, Service Manual

Page: 123 / 274

Rev. C
Greensmaster 3200/3200–D Hydraulic System Page 5 – 51
Front Wheel Motor Removal (Fig. 26)
1. Before removing any parts from the hydraulic sys-
tem, park the machine on a level surface, engage the
parking brake, lower the cutting units, and stop the en-
gine.
CAUTION
Operate all hydraulic controls to relieve sys-
tem pressure and avoid injury from pressur-
ized hydraulic oil. Controls must be oper-
ated with the ignition switch in RUN and the
engine OFF. Return ignition switch to OFF
when pressure has been relieved. Remove
key from the ignition switch.
2. Block front and rear of wheels not being lifted. Lift
front wheel off the ground using a jack, and place blocks
beneath the frame.
3. Remove lug nuts (1) and tire (2) and rim (23). Re-
move lock nut (14) from hydraulic wheel motor (10)
shaft.
IMPORTANT: DO NOT hit wheel hub (24) with a ham-
mer during removal or installation. Hammering may
cause damage to the hydraulic wheel motor (10).
Note: The brake drum assembly consists of the wheel
hub (24), brake drum (3), and drive stud (25).
4. Use a puller to remove brake drum assembly. Do
not disassemble. Remove key (5) from the hydraulic
wheel motor (10) shaft.
5. Remove retaining clip (29) from the brake cam (26)
and brake lever (13). Separate lever from cam.
Note: The brake assembly consists of return spring
(4), brake cam (26), brake shoes (27), backing plate
(28), and retaining clip (29).
6. Remove brake assembly from the brake bracket (6)
by removing four cap screws (16) and lock nuts (19)
from the backing plate (28) and brake bracket. Do not
disassemble.
7. Clean hydraulic wheel motor (10) and hydraulic
connections. Label all connections for reassembly.
8. Disconnect both hose assemblies (7 or 8) and O–
rings (30) from the both hydraulic fittings (9). Allow
hoses to drain into a suitable container.
9. Remove hydraulic fittings (9) and O–rings (31) from
the hydraulic wheel motor (10).
10. Put caps or plugs on disconnected hoses and motor
ports to prevent contamination.
11. Remove four cap screws (20) from brake bracket (6)
and hydraulic wheel motor (10). Remove motor from the
frame.
Front Wheel Motor Installation (Fig. 26)
1. Position hydraulic wheel motor (10) to the frame
(32). Make sure ports of motor face the rear of the ma-
chine. Secure motor and brake bracket (6) to the frame
with four cap screws (20).
2. Remove caps or plugs from the hydraulic wheel mo-
tor (10). Lubricate new O–rings (31) with clean hydraulic
fluid. Install O–rings and hydraulic fittings (9) to the mo-
tor and tighten.
3. Lubricate new O–rings (30) with clean hydraulic
fluid. Install O–rings and hose assemblies (7 or 8) to the
hydraulic fittings (9). Tighten hose connections.
Note: The brake assembly consists of return spring
(4), brake cam (26), brake shoes (27), backing plate
(28), and retaining clip (29).
4. Install brake assembly to the brake bracket (6) by
securing the backing plate (28) to the brake bracket with
four cap screws (16) and lock nuts (19).
5. Secure brake lever (13) to the brake cam (26) with
the retaining clip (29).
IMPORTANT: DO NOT hit wheel hub (24) with a ham-
mer during removal or installation. Hammering may
cause damage to the hydraulic wheel motor (10).
Note: The brake drum assembly consists of the wheel
hub (24), brake drum (3), and drive stud (25).
6. Install key (5) to the hydraulic wheel motor (10)
shaft. Slide brake drum assembly onto the motor shaft.
7. Secure lock nut (14) to the hydraulic wheel motor
(10) shaft. Torque nut from 250 to 400 ft–lb (34.6 to 55.3
kg–m).
8. Install tire (2) and rim (23) to the brake drum assem-
bly. Secure rim with lug nuts (1). Torque nuts from 40 to
50 ft–lb, (5.5 to 6.9 kg–m).
Hydraulic System