Manitowoc Published 11-22-17, Control # 257-02 6-7
MLC300 SERVICE/MAINTENANCE MANUAL SWING SYSTEM
SWING GEARBOX OIL CHANGE
See Figure 6-5 for the following procedures.
Swing gearbox maintenance consists of periodically
checking the level and changing the oil.
Depending on your options, the crane has either one or two
swing drives.
Gear Oil Specifications
For gear oil specifications and the swing gearbox capacity,
see the Lubrication Guide supplied with the crane.
Oil Analysis
An oil analysis program is the best way to determine the best
oil change interval and the condition of the swing gearbox.
Periodic Maintenance
Initial Operation
Drain and refill each swing gearbox after the first 200 hours
of operation.
Monthly or Every 200 Hours
Check each swing gearbox oil level every 200 hours of
operation or monthly, whichever occurs first.
Fill each swing gearbox through the fill cap/breather (1)
opening to the level indicated on the decal next to the sight
gauge (3).
Every 6 Months or 1,000 Hours
Drain and refill each swing gearbox every 1,000 hours of
operation or every 6 months, whichever occurs first, unless
an alternate interval has been established through an oil
analysis program.
Quick-Drain Valve
Each swing gearbox is equipped with a quick-drain valve (4),
which requires use of the quick-drain drainer assembly (see
Figure 6-6
). The quick-drain drainer assembly is stored in
the parts box supplied with the crane.
Item Description
1 Fill Cap/Breather
2 Fill Port (expansion tank)
3 Sight Gauge
4 Quick-Drain Valve
FIGURE 6-5
Item Description
1 Quick-Drain Drainer
2 Hose Clamp
3 Hose: 19 mm (3/4 in) Inside Diameter by 3,0 m (10 ft) Long
FIGURE 6-6