Toro Greensmaster 3150 Service Manual page 138

Removal (Fig. 2)
1. Park machine on a level surface. Make sure engine
is off. Set brake and block front wheels.
2. Jack up and secure the rear wheel off the ground.
Note: The wheel assembly consists of the tire (14),
rim (15), and valve stem (13) with cap. The hub assem-
bly consists of the wheel hub (21), oil seals (18), bearing
cones (19), bearing cups (20), grease fitting (22), and
drive studs (23).
3. Remove lock nut (26) from the castor bolt (34). Sup-
port the rear wheel assembly and pull the castor bolt
from both adapter plates (30 and 33).
4. Remove the spacers (16), and the wheel and hub
assemblies from the castor fork (24).
5. If damage to the castor fork bearings is suspected,
remove the castor fork (24) from the frame as follows:
A. Remove cotter pin (27) and slotted hex nut (28)
securing the steering cylinder rod end (9) to the cas-
tor fork.
B. Release the steering cylinder rod end from the
castor fork.
C. Remove the four hex head screws and flat wash-
ers securing the fuel tank to the frame.
D. Tilt rear of fuel tank up to gain access to the top of
the castor fork. Support fuel tank securely.
CAUTION
Support the castor fork while removing the
slotted hex nut (5) to prevent the fork from drop-
ping and causing personal injury.
E. Remove cotter pin (6) and slotted hex nut (5)
from the castor fork shaft. Lower castor fork from the
frame.
F. Clean and inspect bearing cones (3) and bearing
cups (2) for damage, and replace if necessary.
6. Remove lug nuts (11) from the drive studs (23) of the
wheel hub assembly (17). Separate wheel and hub as-
semblies.
Wheels and Brakes
4
1. Bearing cup
2. Wheel hub
3. Bearing cone
Disassembly (Fig. 2)
1. If drive studs (23) are bent or damaged, press studs
from the wheel hub (21).
2. Remove oil seals (18). Clean and inspect bearing
cones (19) and bearing cups (20) for damage, and re-
place if necessary.
Assembly (Fig. 3)
1. Pack bearing cones (19) with No. 2 multipurpose
lithium base grease and Install bearing cones into the
wheel hub.
2. Grease inner edge of the new shaft seals (18) with
No. 2 multipurpose lithium base grease. Install new
shaft seals (18) into the hub with the lip of the seals fac-
ing towards the inside.
3. If removed. press new drive stud (23) into the wheel
hub (21).
Installation (Fig. 2)
1. Slide wheel assembly onto the drive studs (23).
Tighten lug nuts (11) to the drive studs evenly in a cris–
cross pattern to a torque of 70 to 90 ft–lb (95 to
122 Nm).
2. If the bearings in the castor fork pivot housing were
removed, install castor fork (24) to the frame as follows:
A. Press new bearing cups (2) into the castor fork
pivot housing with the thick side of the cups facing
towards the inside.
B. Pack bearing cones (3) with No. 2 multipurpose
lithium base grease.
C. Coat castor fork shaft with antiseize lubricant
and place two steering washers (4) onto the castor
fork shaft. Slide lower bearing cone onto castor fork
shaft with the wide edge of the bearing against the
washers.
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5
3
3
1
1
5
Figure 3
4. Shaft seal
5. Drive stud
Greensmaster 3150
4
2