© Oct 2020 5-18 AB18EJ&18HJ Maintenance Manual
MAINTENANCE PROCEDURES
10. Start the engine from the ground controller and
inspect the fuel filter for leakage.
B-6 Inspect Air filter of Hydraulic Tank
Keeping the breather cap of hydraulic tank in well-
ventilated condition is vital to normal operation of
hydraulic system and extending service life of hydraulic
elements. Dirty or blocked air filter of hydraulic tank
may cause the hydraulic pump to suction improperly,
and continued operation may result in component
damage. The air filter of hydraulic tank should be
inspected more often in hostile operating environment.
NOTICE
Shut off the engine before inspection.
1. Remove the air filter of hdraulic tank.
Figure 5-13
2. Check the air filter of hydraulic tank.
3. The air should pass through the air filter smoothly.
4. If the air has difficulty in passing through the air
filter, observe the following steps to clean the air
filter.
5. Use neutral solvent to clean the air filter, then blow
dry and repeat the Step 2.
6. Install the air filter back to the hydraulic tank.
B-7 Replace High-Pressure Filter
Element
Replacing high-pressure filter element on a regular
basis is vital to proper machine operation and
extending service life. A dirty or blocked filter could
cause the machine to work improperly, and continued
operation may result in component damage. The high-
pressure filter element should be replaced more often
in hostile operating environment.
BURN HAZARD
Be cautious of hot hydraulic oil.
Bodily contact with hot hydraulic oil
may result in severe burn.
NOTICE
Shut off the engine before inspection.
1. Open the right side cover of turntable, and locate
the high-pressure filter.
2. Place a suitable vessel under the filter.
3. Remove the filter from the mounting bracket.
4. Replace the filter element as needed.
5. Clean up the hydraulic oil spills.
6. Start the engine from the ground controller.
7. Inspect the high-pressure filter and relevant
components for leakage.
B-8 Replace Air Filter of Engine
(AB18HJ only)
NOTICE
Shut off the engine before inspection.
Inspecting the engine air filter is vital to proper engine
operation. Failure to perform this inspection procedure
will result in engine malfunction and component
damage.
1. Open the right side cover of turntable.
2. Locate the engine air filter, as shown in the below
figure：
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