Toro Groundsmaster 1200 Service Manual page 34

Disassembling the Wheel Bearings (continued)
Assembling the Wheel Bearings
Chassis: Service and Repairs
6. Straighten and remove the cotter pin (10) from the torsion axle.
7. Remove the slotted nut (7) and spindle washer (6) that secure the wheel
hub (5) to the torsion axle (1).
8. Slide and remove the wheel hub (5) from the torsion axle (1).
9. Disassemble the wheel hub (5) as follows:
Note: Ensure that you do not damage the hub bore.
A. Pull the oil seal (2) out of the wheel hub. Discard the used oil seal.
B. Remove the bearing cones (3) from both sides of the wheel hub (5).
Clean the bearings in solvent. Inspect the bearings to ensure they are in
good operating condition.
C. Clean the inside of the wheel hub (5). Inspect the bearing cups (4) and
bearing cones (3) for wear, pitting, or other noticeable damage. Always
replace bearing cups and cones as a set.
D. Inspect the drive studs (9) from the wheel hub. Replace any worn or
damaged studs.
10. Clean and inspect the torsion axle (1). Replace any worn or damaged axles.
1. Clean all the wheel hub components before assembly.
2. Assemble the wheel hub as follows:
A. Press the bearing cups (4) into the hub until they seat against shoulder of
the wheel hub.
B. Fill the wheel hub (5) approximately 50% full of grease.
C. Pack both the bearing cones (3) with grease. Install the greased inner
bearing cone into the cup on inboard side of the wheel hub.
D. Install the new oil seal
The seal must be pressed in so that it is flush with the end of the
wheel hub. The lip of the seal must face the bearing.
E. Lubricate the inner surface of the new seal and press it flush with the
edge of the wheel hub.
F. Pack inside of the wheel hub (5) with some grease. Position the
remaining bearing cone (3) into the outer bearing cup (4).
3. Slide the wheel hub assembly (5) onto the spindle shaft (1) and secure it in
place with the spindle washer (6) and slotted nut (7). Do not tighten the nut
or install the cotter pin (12).
4. Rotate the wheel hub by hand and tighten the slotted nut (7) to 8.5 to 11.3
N·m (75 to 100 in-lb) to seat the bearings (3). Once the bearings have been
seated, back the nut off.
IMPORTANT
Page 3–6 Groundsmaster® 1200 Pull-Behind Rotary Mower
18235SL Rev A