Doosan DX700LC, Operation And Maintenance Manual

Page: 220 / 314

OP001123 Inspection, Maintenance and Adjustment
4-32
Check Oil Level in Travel Reduction
Device (One on Each Side of Unit)
1. Make sure that the machine is on firm, level ground.
2. Rotate the track until ports (1 thru 3, Figure 46) are in their
proper positions as shown.
3. Loosen fill plug (3, Figure 46) slightly to allow pressurized
air to escape.
4. Remove oil level plug (1, Figure 46).
5. Check oil level. The oil should be near the bottom of the
level plug opening.
6. Add oil through the fill plug (3, Figure 46) opening, if
necessary.
7. Clean and install oil level and fill plugs (1 and 3, Figure 46).
8. Repeat this procedure on the other travel reduction device.
Change Breaker Filter Element (Optional)
1. Position the machine on firm, level ground. Lower the front
attachment to the ground and shut down engine.
2. Loosen the hydraulic oil tank breather cap to release
pressure.
3. Locate breaker filter assembly (Figure 47).
4. Position a container under the filter assembly. Remove the
drain plug and completely drain the assembly.
5. Using a 30 mm spanner, unscrew filter housing from filter
bottom.
6. Remove O-ring from filter head.
7. Replace filter.
8. Apply a small amount of oil around the entire O-ring and
install the filter housing on the filter head.
NOTE:
Tightening torque: 27 kg•m (265 Nm, 195 ft lb)
9. Install drain plug in bottom of filter housing.
10. After changing breaker filter, vent air from pump and check
level of hydraulic oil tank.
2
1
FG016109
Figure 46
WARNING
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.
FG016133
Figure 47
WARNING
The hydraulic oil will be hot after normal machine operation.
Allow the system to cool down before changing pilot filter.