Manitowoc Published 10-09-2020, Control # 259-06 6-7
MLC80A-1/MLC90A-1/MLC100A-1/MLC100-1 SERVICE/MAINTENANCE MANUAL SWING SYSTEM
SWING GEARBOX OIL CHANGE
See Figure 6-4.
Swing gearbox maintenance consists of periodically
checking the level and changing the oil.
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 Drain Interval
Drain and refill the swing gearbox after the first 200 hours of
engine operation.
Oil Level Interval
Check the swing gearbox oil level weekly or every 10 hours
of function operation or every 20 hours of engine operation,
whichever occurs first.
Remove the fill cap/breather (1) and fill the swing gearbox
through the fill port (2) to middle of the sight gauge (3).
Oil Change Interval
Drain and refill the swing gearbox semiannually or every 200
hours of function operation or every 1000 hours of engine
operation, whichever occurs first, unless an alternate interval
has been established through an oil analysis program.
Quick-Drain Valve
The swing gearbox is equipped with a quick-drain valve (4),
which requires use of the quick-drain drainer assembly (see
Figure 6-5
). The quick-drain drainer assembly is stored in
the parts box supplied with the crane.
Oil Change Procedure
Change the oil when the gearbox is warm, not hot.
NOTE: To prevent harmful contaminants from entering a
gearbox, thoroughly clean components before
disconnecting or connecting them.
See Figure 6-4
.
1. Lock out tag out the crane.
2. Remove the dust cap from the quick-drain valve (4).
Item Description
1 Fill Cap/Breather
2 Fill Port
3 Sight Gauge (Qty 2)
4 Quick-Drain Valve
FIGURE 6-4
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 6-5
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