Rear Wheel Bearings - Toro Reelmaster 4500–D Service Manual

1. Jack up rear of machine until tire is off the floor. Sup-
port machine with jack stands or blocks to prevent it from
falling.
2. Remove dust cap (16) from end of wheel spindle.
3. Remove cotter pin (15), slotted nut and washer (18).
Slide wheel off of spindle shaft.
4. Pull seal (22) out of wheel hub (9).
5. Remove bearings (11, 21) from both sides of wheel
hub (9). Clean the bearings in solvent. Make sure the
bearings are in good operating condition. Clean the in-
side of the wheel hub (9). Check the bearing cups (10,
20) for wear, pitting or other noticeable damage. Re-
place worn or damaged parts.
6. If bearing cups (10, 20) were removed from the wheel
hub (9), press them into the hub until they seat against
the shoulder.
7. Use No. 2 general purpose lithium base grease con-
taining E.P. additive. Pack both bearings (11, 21) with
grease. Install one bearing (21) into the cup (20) on in-
board side of wheel hub. Lubricate the inside of the new
lip seal (22) and press it into the wheel hub.
IMPORTANT: The lip seal must be pressed in so it is
flush with the end of the hub. The lip of the seal must
be toward the bearing.
8. Pack inside of wheel hub with some grease (not full).
Install remaining bearing (11) into bearing cup (10).
9. Slide the wheel onto the spindle shaft and secure it in
place with the flat washer (18), nut (17), and retainer nut
(50). DO NOT tighten the nut or install the cotter pin.
10. Adjust preload on the wheel bearings (see Adjusting

Rear Wheel Bearings).

Axles and Brakes
Adjusting Rear Wheel Bearings
1. Remove dust cap (16) from end of wheel spindle. Re-
move cotter pin (15) retaining slotted nut (50) in place.
2. Rotate the wheel by hand and tighten the slotted nut
until the bearing binds SLIGHTLY. Then, loosen the nut
until the nearest slot and hole in the spindle line up. Re-
install the cotter pin (15) to retain the slotted nut (50) in
place.
NOTE: The correct end play of the adjusted assembly
is 0.002 – 0.005 inches.
3. Remove jack stands or blocks and lower machine to
floor.
4. Put a coating of grease on the inside of the dust cap
(16). Install dust cap on end of wheel spindle.
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Figure 6
Reelmaster 4500–D