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28 Service & Maintenance
MAN0506 (Rev. 9/5/2008)
Gearbox leakage & Troubleshooting
Some gearbox oil leakage may be acceptable if:
1. Oil covers less than a 3-inch diameter circle around
the shaft seal area (see Figure 30).
2. Oil covers less than a 4-inch diameter circle around
the dipstick tube (see Figure 30).
If oil leakage covers an area larger than that described
in 1 and 2, do the following:
1. Properly check oil level. If low, properly service.
2. Clean oily area of gearbox. Use a degreaser to
remove all oil from outside surface of gearbox.
3. Closely monitor gearbox for 10 hours of operation.
Check and service oil every 30 minutes or as
needed to ensure operation does not occur with oil
below the add mark.
4. If after 10 hours of operation, oil covers less than
the area described in 1 & 2 above, seepage is
considered to be acceptable.
5. If after 10 hours of operation, oil covers more than
the area described in 1 & 2 above, this seepage is
considered to be unacceptable leakage.
6. Gearboxes with unacceptable leakage should be
rebuilt, replacing old seals and worn parts with new
seals and parts. Gearbox rebuild and seal
replacement parts are available through your local
Woods dealer. Consult with Woods Technical
Service for further details, rebuild
recommendations, or warranty questions.
CHANGING GEARBOX OIL
Although gearbox oil never wears out, dust, dirt, and
moisture can enter through the breather during opera-
tion. These contaminants must be removed once a
year to ensure a long life for working components. In
very dusty or dirty conditions, change the oil twice a
year.
1. Clear area of bystanders, especially children.
2. Shut off tractor, place all controls in neutral, set
parking brake, remove key, and wait for all moving
parts to stop.
3. Raise the unit to provide access to underside.
Place safety stands or large blocks under frame.
4. Disconnect PTO driveline and hydraulic lines.
5. Place a pan under drain plug. Remove drain plug
and dipstick plug (see Figure 31).
6. Allow gearbox to drain for 10 minutes.
NOTE: To remove the most contaminants, drain oil
when gearbox is hot.
Figure 30. Acceptable Oil Leakage