© Oct 2020 5-16 AB18EJ&18HJ Maintenance Manual
MAINTENANCE PROCEDURES
• B-2 Inspect rims, tires and fasteners
• B-13 Inspect slewing bearing bolts
• B-14 Inspect platform rotate cylinder fasteners
CHECKLIST B
PROCEDURES
B-1 Replace Hydraulic Oil Tank Return
Filter Element
Replaceing the hydraulic tank return filter element on a
regular basis is vital to proper machine opration and
extending service life. Repeated use of a dirty or
blocked filter could cause damage to the machine
components. Replace the return filter element more
frequently in very dirty environments.
BURN HAZARD
Allow the hydraulic oil to cool to
room temperature before servicing
the hydraulic system.
NOTICE
Shut off the engine before inspection.
1. Open the left side cover of the turntable.
2. Locate the return filter of hydraulic oil tank.
Figure 5-12
3. Use a wrench to remove the return filter.
HIGH PRESSURE HAZARD
Slowly remove the hydraulic
components to reduce hydraulic
oil pressure. High hydraulic oil
pressure could penetrate the skin.
Seek medical attention
immediately.
4. Loosen the cap on the filter top, and remove the
filter element.
5. Apply a thin coat of oil film over the gasket of the
new return fitler element.
6. Clean the housing of return filter, install the new
filter element, and re-install the return filter.
7. Clean all oil spills during the replacement process.
8. Start the engine from the ground controller.
9. Inspect the filter and hydraulic components to
ensure no leakage exists.
B-2 Inspect Rim, Tire and Fasteners
Good maintenance of rims and tires is vital to safe
machine operation. The machine might tip over if the
rim or the tire has problems. Repair any problems with
the rims and tires before operating the machine.
The machine is equipped with solid tires that do not
need to be inflated.
1. Inspect the tires on a daily basis for damage or
excessive wear. If any of the following condition
occurs, immediately remove the machine from
service and replace tires or tire assembly (including
rims). For the requirements and procedure for the
replacement, please reference Tires and Rims,
page 6-7.
• Play separation of tires, i.e., circumferential rips
or lamination occurring to in between the
rubbers.
• Detachment from rims: the rubber comes off
from the steel rims.
• Rubber surface locally peeling off in lumps.
• Rubber cracks in radial direction.
• Rubber worn to the wear mark.
2. Inspect the lug nuts are torqued to specificion
(800Nm[590ft-lb]).
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