© Oct 2020 5-28 AB18EJ&18HJ Maintenance Manual
MAINTENANCE PROCEDURES
5. Add clean fuel to the new filter element, and
lubricate the seal ring with the clean fuel and install
it to the filter head.
6. Clean up the fuel spills in performing the procedure.
C-2 Replace 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. Unqualified cleanliness 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 replaced more often in harsh operating
environment.
1. Use a wrench to remove the air filter from the
hydraulic tank. (The location of the air filter is shown
inFig 5-12 , page 5-18)
2. Install new air filter and tighten.
C-3 Replace Engine Oil (AB18HJ only)
NOTICE
The engine oil filter must also be replaced after
replacing the engine oil. Replace the oil with engine
started to circulate the oil more smoothly and avoid
contamination.
1. Turn the Ground/Platform select switch to Ground.
2. Pull out the emergency stop button on the ground
controller to ON.
3. Turn the Engine/Motor select switch on the ground
controller to Engine position.
4. Move the engine preheat switch to idle for 2
minutes.
5. Shut off the engine.
6. Open the drain valve to drain the engine oil.
Figure 5-23
BURN HAZARD
Do not come in contact with the hot
engine oil when draining to avoid
burns.
NOTICE
The waste engine oil should collected in a
suitable vessel for disposal or reclying. The waste
engine oil should be treated in compliance with
the environment laws or regulations.
7. Close the drain valve.
8. Add the new engine oil. For the recommended
viscosity grade of the engine oil, please reference
A-8 Inspect Engine Oil Level (AB18HJ only),
page 5-9。
C-4 Replace Engine Oil Filter (AB18HJ
only)
NOTICE
Replace the engine oil filter each time the engine oil
is replaced.
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