Doosan DX220A Operation And Maintenance Manual page 157

Working in Water
IMPORTANT
When working in water, do not exceed a slope of more than
15°. If the slope is over 15°, the rear part of the upper
structure will be immersed in water, resulting in radiator fan
and engine ECU damage.
FG000179
Figure 66
When working in water, do not operate in water over center of
upper roller (1, Figure 67).
If swing bearing gets wet, immediately grease it until all old
grease is purged from bearing.
If water gets into swing gear housing, drain water immediately
by removing lower inspection cover. Apply new grease.
After working in water, purge old grease on bucket pins.
1
FG000181
Figure 67
Operation OP001761
3-31