Doosan DX140LC, Operation And Maintenance Manual

Page: 218 / 297

OP000599 Inspection, Maintenance and Adjustment
4-34
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 49).
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.
Change Oil in Travel Reduction Device
(One on Each Side of Unit) (After First
250 Hours)
NOTE: Drain and refill oil after first 250 hours of operation or
rebuild, and every 1,000 hours thereafter (See page
4-48).
Replace Hydraulic Oil Return Filter (After
First 250 Hours)
NOTE: Replace hydraulic oil return filter after first 250 hours
of operation or rebuild, then every 1,000 hours
thereafter (See page 4-46).
Figure 49
FG009569
WARNING!
The hydraulic oil will be hot after normal machine
operation.
Allow the system to cool down before changing pilot filter.