SWING SYSTEM MLC650 SERVICE/MAINTENANCE MANUAL
6-8
Published 09-09-16, Control # 229-09
VPC-MAX Planetary Swing Drives
See Figure 6-8 for the following procedures.
NOTE: It is better to change the oil when the gearbox is
warm (not hot).
To prevent harmful contaminants from entering the
gearbox, thoroughly clean components before
disconnecting or connecting them.
1. Lockout-tagout the crane.
2. Remove the breather plug (1) to vent the gearbox.
3. Remove the dust cap (3) from quick-drain valve (4).
4. Place the non-fitting end of the quick-drain drainer
assembly hose into an appropriate container for
collecting the drained oil.
5. Connect the quick-drain drainer assembly hose to the
quick-drain valve.
6. When the planetary drive has finished draining, remove
the quick-drain drainer assembly.
7. Fasten the dust cap to quick-drain valve.
8. Fill the planetary drive with specific oil as follows.
a. Remove the plug from the fill port (2).
b. Add oil through the fill port using an appropriate
funnel until oil level is halfway up the oil level sight
gauge (5). Do not overfill.
c. Install the fill port plug.
Item Description
1 Breather Plug
2 Fill Port
3Dust Cap
4 Quick-drain Valve
5 Oil Level Sight Gauge
FIGURE 6-8
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