Toro Greensmaster TriFlex 3320/3420 Service Manual page 263

Disassembly (Fig. 11)
1. Park machine on a level surface, engage the parking
brake, lower the cutting units and stop the engine. Re-
move key from the ignition switch.
2. Chock front wheels to prevent machine from shifting.
3. Remove rear wheel (see Wheel Removal in this sec-
tion). Make sure to support machine with jack stands.
4. Remove the dust cap from the wheel hub.
5. Remove the cotter pin, retainer, jam nut and tab
washer. Slide the wheel hub from the spindle shaft.
6. Pull the seal out of the wheel hub. Discard seal.
7. Remove the bearing cones from both sides of the
wheel hub. Clean the bearings in solvent. Make sure the
bearings are in good operating condition. Clean the in-
side of the wheel hub. Check the bearing cups for wear,
pitting or other damage. Replace worn or damaged
parts.
8. If necessary, press wheel studs from wheel hub.
9. Inspect wheel spindle for wear or damage. If re-
quired, remove cap screws and flange nuts that secure
spindle to rear fork and remove spindle from machine.
Assembly (Fig. 11)
1. If wheel spindle was removed from rear fork, position
spindle to fork and secure with cap screws and flange
nuts.
2. If bearing cups were removed from the wheel hub,
press new cups into the hub until they seat against the
shoulder of the hub.
3. If wheel studs were removed from wheel hub, press
wheel studs into hub. Make sure that stud shoulders are
fully pressed against hub surface.
4. Apply a light coating of grease to wheel spindle.
5. Pack both bearing cones with grease. Install one
bearing into the bearing cup on inboard side of the wheel
hub.
Greensmaster 3320/3420
IMPORTANT: The lip of the seal must be toward the
bearing. The seal should be pressed in so it is flush
with the end of the wheel hub.
6. Lubricate the inside of a new seal and press it into the
wheel hub with the seal lip toward the bearing.
7. Fill wheel hub cavity between bearings approximate-
ly 50% full of grease. Position remaining bearing into the
outer bearing cup.
8. Carefully slide the wheel hub assembly onto the
spindle shaft and secure it in place with the tab washer
and jam nut. DO NOT fully tighten the nut or install the
cotter pin.
9. While rotating the wheel hub by hand, torque the jam
nut from 75 to 100 in-lb (8.5 to 11.3 N--m) to set the bear-
ings. Then, loosen the nut until the hub has endplay.
10.Again, while rotating the wheel hub by hand, torque
the jam nut from 15 to 20 in-lb (1.7 to 2.3 N- -m). After
tightening, make sure that the wheel hub does not have
any free play.
11. Install retainer with slot aligned to cotter pin hole in
spindle. Install cotter pin.
12.Fill dust cap approximately half full of grease. Install
dust cap.
13.Install rear wheel (see Wheel Installation in this sec-
tion).
14.Lower machine to ground.
Failure to maintain proper wheel lug nut torque
could result in failure or loss of wheel and may re-
sult in personal injury.
15.Torque lug nuts evenly in a crossing pattern from 65
to 85 ft- -lb (89 to 115 N- -m).
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WARNING
Chassis