MAINTENANCE PROCEDURES
AB18EJ&18HJ Maintenance Manual 5-7 © Oct 2020
hydraulic oil level should be within the marking
range of oil level indicator.
Figure 5-1
2. Ensure the hydraulic tank body and its connections
are free of leaks.
3. Add oil as needed. Never overfill the tank.
Table 5-4
CUSTOMER
REQUIREMENTS
HYDRAULIC OIL
MARK
Normal-temperature region
0°C to 40°C (32°F to 104°F)
L-HM46
Cold region
-25°C to 25°C (-13°F to 77°
F)
L-HV32
High-temperature region
greater than 40°C (104°F)
L-HM68
Extremely cold region
less than -30°C (-22°F)
Special programmes
need to be identified.
NOTICE
Different hydraulic oils can be added according to
customer requirements upon factory delivery, but
cannot be mixed.
A-5 Inspect Hydraulic Leakage
Preventing the hyrdraulic oil from leaking is vital to safe
and normal machine operation. If the hydraulic leaks
fail to be discovered, it will lead to hazardous situations,
reduce the machine performance and damage
components.
Inspect the area on or around the following components
for hydraulic spill, dripping or residues:
• Hydraulic tank, filters, hoses, fittings, and
emergency power unit
• All hydraulic cylinders,manifolds and pumps
• Engine(AB18HJ only)
• Boom system
• Slewing bearing
• Drive chassis
• Areas around the machine
A-6 Inspect Fuel Level (AB18HJ only)
NOTICE
Be sure to shut down the engine before inspection.
Keeping the diesel fuel at an appropriate level is vital to
maintaining the engine performance and extending
service life. An inappropriate fuel level will bring
damage to the engine parts and lead to improper
functioning of the machine.
Perform the following procedures with the boom in
stowed position:
1. Turn the Ground/Platform select switch at the
ground controller to the “Ground” position, and turn
the Diesel/Electric drive mode select swith to the
“Diesel” position,the indicator panel of the ground
control will show the fuel level percentage.
Figure 5-2
2. Or turn the Ground/Platform select switch at the
ground controller to the “Ground” position, and turn
the Diesel/Electric drive mode select swith to the
“Diesel” position,the indicator panel of the platform
controller will show the fuel level percentage.
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