Toro Workman 3000 Series, Service Manual

Page: 263 / 306

Front Wheel
Drive (4WD)
3. Inspect differential case (27) in the area where the
bevel side gears (5) and pinion gear shafts (6) mesh.
Replace case if machined areas are scored or if the pin-
ion shaft (25) fits loosely in its bore (Fig. 28).
IMPORTANT: The ring gear (32) and pinion gear (8)
must be replaced as a matched set.
4. Inspect bevel side gears (5), pinion gear shafts (6),
pinion gear (8), and ring gear (32) for abnormal wear or
damage. Replace any gear that is worn or damaged.
Cracked, broken, missing, or chipped gear teeth are not
acceptable (Fig. 29).
Figure 28
IMPORTANT: If any part of a bearing needs replace-
ment, both bearing cone and cup must be replaced.
5. Replace bearing cones (9, 22, or 29) and corre-
sponding bearing cups (10, 23, or 30) if any of the follow-
ing conditions occur (Fig. 30 and 31):
A. Spalling or pitting on roller or cone contact sur -
faces. Corrosion that can not be cleaned up with light
polishing.
B. The rib face on the cone is worn back, or rollers
are worn or scored. The roller cage is cracked or bro -
ken.
Figure 29
C. Peeling, gouges, or nicks inside the cup or on roll -
ers. Scalloping, high spots, brinelling, or burrs in the
cups.
BEARING
CONE
Figure 30
BEARING
CUP
Figure 31
Workman 4000 Series Page 10 – 21 Front Wheel Drive (4WD)