Changing The Rear Axle Oil; Differential; Planetary - Komatsu WB140-2N Operation & Maintenance Manual

MAINTENANCE

CHANGING THE REAR AXLE OIL

• Oils, filters, coolant, and the battery are considered spe-
cial waste and must be collected and disposed of
according to all anti-pollution regulations in force.
Perform this operation with the machine positioned on level ground and
at operating temperature, so that the oil becomes fluid and can be easily
drained, which facilitates elimination of any suspended solid particles.

DIFFERENTIAL

1. Remove drain plug (2) and let the used oil flow out completely, col-
lect it in a container with suitable capacity. While the oil flows out,
remove plug (1), using a 1/2" square wrench.
2. Once the oil has been drained, reinstall plug (2) and pour oil of the
prescribed type through hole (1), until level corresponding to lower
edge of the hole itself is reached.
With this operation both axle shafts are filled with oil; before
checking level definitively and putting back the plug, wait a
few minutes, in order to permit the uniform distribution of oil.
3. Install plug (1).

PLANETARY

1. Move the machine until drain plug (3) is in low position on the ver-
tical axis.
2. Remove plug (3) and let used oil flow out, collect it into a container
with suitable capacity, using a 1/2" square wrench.
3. After draining oil, move the machine until plug (3) that serves also
as level indicator is positioned on the horizontal axis.
4. Pour oil of prescribed type through the hole until it reaches lower
edge of the hole itself.
5. Reinstall plug (3).
Move the machine both forward and backward and then stop it. Check
the levels again. Always use oil of the prescribed type. (See "FUEL,
COOLANT, AND LUBRICANTS" on page 3-7).
3-48 WB140-2N, WB150-2N