Doosan DX700LC Operation And Maintenance Manual page 234

Change Oil in Travel Reduction Device
(One on Each Side of Unit)
The gear oil is very hot after the machine has been
operating. Shut all systems down and allow them to cool.
Before fully removing any motor case, inspection port plug,
etc., loosen the plug slightly to allow pressurized air to
escape.
NOTE:
Drain oil after first 250 hours of operation or rebuild,
and every 1,000 hours thereafter.
1. Make sure that the machine is on firm, level ground.
2. Rotate the track until ports (1 thru 3, Figure 78) are in their
proper positions as shown.
3. Place a container under drain plug (2, Figure 78) and
remove plugs (1 thru 3) to drain the travel reduction gear
oil.
NOTE:
Dispose of drained fluids according to local
regulations.
4. Install drain plug (2, Figure 78). Refill the travel reduction
gear case with fluid through fill port (3) until the fluid level is
at port (1). Install level plug (1) and fill plug (3).
NOTE: See "Fluid Capacities" on page 4-8. for capacity.
5. Repeat this procedure on the other travel reduction device.
Change Air Breather Filter
1. Position the machine on firm, level ground. Lower the front
attachment to the ground and shut down engine.
2. Lift the breather cap(2. Figure 79) slightly to release the
internal pressure.
3. Unscrew the bolt (1, Figure 79) and take off the breather
cap (2, Figure 79).
4. Change a filter cartridge (3, Figure 79) and assemble the
breather cap by tighting the bolt.
NOTE: Used filter should always be disposed of
according to local regulations.
Inspection, Maintenance and Adjustment
4-46
WARNING
Figure 78
Figure 79
1
2
FG016109
1
2
3
FG013207
OP001123