5 - 6
Changing the Hydraulic Oil (continued)
7. Bleed the Hydraulic Components
See Air Bleeding Procedures
8. Check for leaks
a. Start the engine and run it for around 5 minutes
without load.
b. Slowly operate the Travel, slew and cylinders
several times.
9. Check the fluid level
See Checking the Fluid Level.
Changing the Return Filter Element
1. Prepare the Machine
Position the machine on level ground. Stop the engine.
Remove the starter Key.
2. Locate the Return filter. See Components Location
Diagram at the end of this section.
3. Release Tank Pressure.
See Releasing Tank Pressure.
4. Removing the Element
a. Remove the retaining bolts A and washers B and
take off the cover plate C complete with its 'O'-ring
seal.
b. Remove the spring D, bypass valve E and element F.
5. Fit a New Element
Re-assemble in reverse order, using a new filter element
F and replace the 'O'-ring with a new one if the one
removed is worn or damaged.
6. Seal the system
Refit the cover plate C and secure with bolts A and
washers B.
Section 3
Routine Maintenance
9803/6400
Section 3
5 - 6
Issue 1
Hydraulics (continued)
C
A
B
D
E
F
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