Swing Drive Unit - Volvo EC330B Operator's Manual

Service and maintenance
158

Swing drive unit

A
B
C
Swing drive unit
General
IMPORTANT
Always clean around the oil level gauge before you check the
oil level. Dirt in the oil damages the swing drive case.
It is very important that the oil level is always correct and that it is
checked at working temperature.
Therefore remember:
– The swing drive case may not drive correctly and thus be dam-
aged if there is too little oil.
– Too much oil makes the oil foam, which causes the swing
drive case to overheat.
Immediately after operating the machine, the oil is hot.
Allow the oil to cool.
Checking oil level of swing drive unit
Check the oil level every 250 hours.
1 Pull out oil dipstick (A), and wipe it with a clean cloth.
D
2 Insert oil dipstick (A) again.
3 Pull out dipstick (A) again, and check the level. If the level is in
If the oil is below the correct level, top up with the oil through oil
filler hole (B) to the correct level.
Oil specification: See Recommended lubricants on page 177.
If the oil is above the proper level, loosen drain valve (C), and drain
the oil to adjust to the proper level. Then close drain valves (C).
S83131
Changing oil of swing drive unit
Change the oil after the first 500 hours and then every 1000
hours.
1 Find a container for receiving the drained oil.
2 Place the container under the valve on the swing drive unit for
3 Remove protecting cap and connect drain hose, which is the
4 Close drain valve (C).
5 Pull out oil dipstick (A), and fill oil to the correct level through
6 Check the oil level again and if necessary, top up.
Oil specification: See Recommended lubricants on page 177.
WARNING!
the center of "D", the level is correct.
receiving the drained oil.
same hose as that used for engine oil draining.
oil filler hole (B).
- Wait about 5 minutes for checking accurately after filling oil.