Komatsu WB93R-5, Operation & Maintenance Manual

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MAINTENANCE PROCEDURES
223
4.8.11.b CHANGING THE REAR AXLE OIL
WARNING
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Change the oil with the machine parked on a level surface
and the work equipment resting on the ground.
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Oils, filters, the coolant and the battery are considered spe-
cial waste and must be collected and disposed of accord-
ing to the regulations in force.
CAUTION
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On new machines change the rear axle oil after the first 250
hours of operation and successively every 1000 hours.
This operation must be carried out with the machine positioned on
level ground and at operating temperature, so that the oil be-
comes fluid and can easily be drained, which facilitates the elimi-
nation of any suspended solid particles. Carry out the following
operations in the given order:
1 - Remove the drain plug (2) of the central body and let the
used oil flow out completely, gathering it into a container with
suitable capacity. While the oil flows out, remove the level
plug (1). Use a 1/2” square wrench.
2 - Remove the plug (3) of each reduction gear and gather the
used oil into a container with suitable capacity.
Use a 17 mm wrench.
3 - Once the oil has been drained, put back the drain plug (2),
the plug (3) and add oil of the prescribed type through the
hole (1), until reaching the level corresponding to the lower
edge of the hole itself.
IMPORTANT
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This operation serves to fill both axle shafts, since the oil
contained in the rear axle lubricates both the differential
unit and the final reduction gears.
Before checking the level for the last time and putting back
the plug, wait a few minutes in order to allow the oil to be
evenly distributed.
4 - Put back the plug (1).
Carry out some forward and backward movements, stop the ma-
chine and check the levels again.
Always use oil of the prescribed type (see "4.3 FUEL, COOLANT
AND LUBRICANTS").
RKAB4060
2
1
RKAB4070
3
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