Service Manual

7. Remove master link from drive chain. Remove chain
from sprocket on rear hub.
8. Carefully pry dust cap (item 11) from hub.
9. Remove cotter pin (item 14) from shaft.
10.Remove nut retainer (item 12), jam nut (item 10) and
t
ab washer (item 13) that secure hub to shaft. Slide hub
with bearings from shaft.
11. Disassemble wheel hub:
A. Pull shaft seal (item 5) from hub.
B. Remove bearings (item 6) from both ends of hub.
C. Inspect bearing cups and cones for wear or dam-
age.
12.If required, remove lock nut (item 2) that secures
shaft to frame and remove shaft from machine.
Installation (Fig. 2)
1. Clean all parts thoroughly before reassembly.
2. If shaft was removed from frame, clean taper on
shaft and frame. Position shaft to frame and secure with
lock nut (item 2).
3. Assemble wheel hub:
A. If bearing cups were removed from the wheel
hub, press inner and outer cups into the hub until
they seat against the hub shoulder
.
B. Pack both bearing cones with grease. Install
greased inner bearing into the cup on inboard side of
the wheel hub.
IMPORTANT: The lip of the seal must face the
bearing. The seal must be pressed in so it is flush
with the end of the hub.
C. Lubricate the inside of the new lip seal and press
it into the wheel hub.
4. Install the wheel hub onto the shaft taking care to not
damage seal.
5. Install greased outer bearing cone, tab washer (item
13), and jam nut (item 10) onto shaft.
6. Rotate the wheel hub by hand and torque the jam nut
from 75 to 180 in-lb (8.5 to 20.3 N–m) to seat bearings.
Loosen nut until it is away from tab washer and hub has
e
nd play. Finally, tighten jam nut from 15 to 20 in–lbs (1.7
to 2.3 N–m) while rotating hub.
7. Install nut retainer and cotter pin to secure hub as-
sembly
.
8. Fill dust cup approximately 50% full of grease and
install dust cap to hub.
9. Grease hub bearings at grease fitting on hub until
grease purges from seal. Clean excess grease from
seal area.
10.Position drive chain to hub sprocket (Fig. 3). Install
master link to chain. Lubricate chain.
11. Install chassis guard (item 28 or 30) and sprocket
guard (item 3) to machine.
12.While holding idler sprocket, remove cap screw (item
21), lock washer (item 20), flat washer (item 22) and
special
nut (item 29) and then install idler cover (item
23). Reinstall cap screw, washers and special nut. Make
sure that special nut is correctly positioned in slot in
frame.
13.Adjust drive chain tension (see Operator’s Manual).
14.Install rear wheel assembly with valve stem facing
out. Secure wheel to machine with four (4) lug nuts.
T
orque lug nuts from 65 to 90 ft–lb (88 to 122 N–m).
15.Lower machine to ground.
16.Lower lock–up brackets from coring head before ma-
chine use.
Figure 3
Chassis
Greens Aerator Page 6 – 7 Chassis