Toro Greensmaster 3150 Service Manual page 76

Front Wheel Motor Removal (Fig. 23)
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
Before continuing further, read and become fa-
miliar with General Precautions for Removing
and Installing Hydraulic System Components.
2. Chock front and rear of wheels not being lifted to
prevent the machine from moving. Lift front wheel off the
ground using a jack, and place blocks beneath the
frame.
3. Remove lug nuts (1), tire (2), and rim (3) from drive
studs (7). Loosen but do not remove lock nut (24) from
hydraulic wheel motor (20) shaft.
IMPORTANT: DO NOT hit wheel hub (6) with a ham-
mer during removal or installation. Hammering may
cause damage to the hydraulic wheel motor (20).
Note: The brake drum assembly consists of the wheel
hub (6), brake drum (3), and drive stud (7).
4. Use wheel hub puller (see Special Tools) to free
wheel hub assembly from motor shaft. Do not disas-
semble. Remove lock nut (24) and key (13) from the hy-
draulic wheel motor (20) shaft.
5. Remove retaining clip (10) from the brake cam (9)
and brake lever (23). Separate lever from cam.
Note: The brake assembly consists of return spring
(11), brake cam (9), brake shoes (12), backing plate (8),
and retaining ring (10).
6. Remove brake assembly from the brake bracket
(14) by removing four cap screws (26) and lock nuts (29)
from the backing plate (8) and brake bracket. Do not dis-
assemble.
7. Label all connections for reassembly purposes.
8. Disconnect both hose assemblies (15 or 16) and O–
rings (18) from the both hydraulic fittings (17). Allow
hoses to drain into a suitable container.
9. Remove hydraulic fittings (17) and O–rings (19)
from the hydraulic wheel motor (20).
10. Remove four cap screws (30), and lock nuts (32)
from brake bracket (14) and hydraulic wheel motor (20).
Remove motor from the frame.
Hydraulic System
Front Wheel Motor Installation (Fig. 23)
1. Position hydraulic wheel motor (20) to the frame.
Make sure ports of motor face the rear of the machine.
Secure motor and brake bracket (14) to the frame with
four cap screws (30), and lock nuts (32).
2. Remove caps or plugs from the hydraulic wheel mo-
tor (20). Lubricate new O–rings (19) with clean hydraulic
fluid. Install O–rings and hydraulic fittings (17) to the mo-
tor and tighten.
3. Lubricate new O–rings (18) with clean hydraulic
fluid. Install O–rings and hose assemblies (15 or 16) to
the hydraulic fittings (17). Tighten hose connections.
Note: The brake assembly consists of return spring
(11), brake cam (9), brake shoes (12), backing plate (8),
and retaining ring (10).
4. Install brake assembly to the brake bracket (14) by
securing the backing plate (8) to the brake bracket with
four cap screws (26) and lock nuts (29).
5. Secure brake lever (23) to the brake cam (9) with the
retaining clip (10).
IMPORTANT: DO NOT hit wheel hub (6) with a ham-
mer during removal or installation. Hammering may
cause damage to the hydraulic wheel motor (20).
Note: The brake drum assembly consists of the wheel
hub (6), brake drum (3), and drive stud (7).
6. Place antiseize lubricant on woodruff key (13) and
inside of the wheel hub (6). Install key (13) to the hydrau-
lic wheel motor (20) shaft. Slide brake drum assembly
onto the motor shaft.
7. Secure lock nut (24) to the hydraulic wheel motor
(20) shaft. Torque nut from 250 to 400 ft–lb (339 to 542
Nm).
8. Install the tire (2), and rim (3), to the brake drum as-
sembly. Secure rim with lug nuts (1). Torque nuts from
70 to 90 ft–lb (95 to 122 Nm).
Page 4 – 52 Rev. A Greensmaster 3150