Filter
Top Products
28 Service & Maintenance
MAN0943 (07/12/2011)
GEARBOX OIL LEAKAGE
NOTICE
■ Major oil leakage from the gearbox shaft seal
area is not acceptable and could cause the gearbox
to fail due to lack of lubrication and cooling. It is
the operator’s responsibility to check the gearbox
oil level per the Lubrication Service Table.
Before checking gearbox oil level, shut down the
shredder for a couple of hours to allow the oil to drain
back into the reservoir for the most accurate reading.
Proper oil level should be between the full and add
lines on dipstick. When oil is needed, add through the
dipstick tube.
NOTICE
■ DO NOT OVERFILL. Lab tests have proven that
overfilling the gearbox can dramatically increase
the gearbox operating temperature. In extreme
cases this can overheat the oil, reducing its lubri-
cating and cooling properties, and eventually
cause shaft seals to deteriorate and fail. Over-
heated oil has an obvious burnt smell; drain it and
refill with new oil. Overfilling gearbox oil can void
the warranty.
The gearbox should not require frequent servicing of
oil. It is not designed to consume or lose large amounts
of oil. If oil needs to be added frequently, troubleshoot-
ing the cause is required (see section below).
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 29).
2. Oil covers less than a 4-inch diameter circle around
the dipstick tube (see Figure 29).
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 30).
6. Allow gearbox to drain for 10 minutes.
NOTE: To remove the most contaminants, drain oil
when gearbox is hot.