Doosan DX190W, Руководство по эксплуатации и обслуживанию

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OP000530
4-47
Inspection, Maintenance and Adjustment
Replace Hydraulic Oil Return Filter
NOTE: Change hydraulic oil return filter after first 250 hours
of operation or rebuild, and every 1,000 hours
thereafter.
NOTE: If return filter clogged warning light (Figure 82) on
instrument panel comes "ON" the return filter must be
serviced.
1. Position the machine on firm, level ground. Lower the front
attachment to the ground and shut down engine.
2. Loosen the breather cap (1, Figure 83) slightly to release
the internal pressure.
3. Remove bolts (2, Figure 83) and service cover (3).
Remove spring (4), valve (5) O-ring (6), and bypass
strainer (7), and then filter (8).
4. Remove filter and discard.
NOTE: Used filter should always be disposed of
according to local regulations.
5. Install new filter and a new O-ring. Install bypass strainer,
valve and spring. Install service cover plate.
6. Tighten the breather cap (1, Figure 83).
7. Run engine for ten minutes at low idle to purge air from
circuit.
8. Check level in hydraulic oil tank (See page 4-16). Add oil if
necessary.
Figure 82
C H C
E F
H
E/G SPEED
1700
RPM
FG000760
02/05 [MO] 11:30
FG006645
3
2
1
Figure 83
WARNING!
The hydraulic oil will be hot after normal machine
operation. Allow the system to cool before attempting to
service any of the hydraulic components.
The hydraulic tank is pressurized. Loosen the hydraulic
breather cap slightly to allow the pressurized air to vent.
After the pressure has been released, it is safe to remove
either the breather cap or service covers or drain water
from the tank.
7
5
8
4 3 6
FG000761
Figure 84
IMPORTANT
Make sure to clean any dirt or water from the top of the
hydraulic tank, especially around the fill port and filter
ports.