PRE-OPERATION INSPECTION
GTZZ15J Operation Manual 5-3 © Nov. 2022
Perform the following procedures with the boom in
stowed position:
1. Open the left turntable cover to make visual
inspection of the sides of hydraulic oil tank. The
hydraulic oil level should be within the marking
range of oil level indicator.
Figure 5-1
2. Ensure the hydraulic oil tank body and its
connections are free of leaks.
3. Add oil as needed. Never overfill the tank.
Table 5-1
CUSTOMER
REQUIREMENTS
HYDRAULIC OIL
VISCOSITY
GRADES
Normal temperature region
0°C to 40°C (32°F to 104°F)
L-HM46
Low temperature 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 low temperature
region
less than -30°C (-22°F)
Special programmes
need to be identified.
NOTICE
Other hydraulic oils can be added according to
customer requirements upon factory delivery, but
different hydraulic oil cannot be mixed.
INSPECTING FUEL LEVEL
NOTICE
Make 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 control position, and
turn the FE/DC mode select switch to the FE mode
position, the ground control display will show the
diesel fuel percentage.
Figure 5-2
2. OR turn the Ground/Platform select switch at the
ground controller to the platform control position,
and turn the FE/DC mode select switch to the FE
mode position, the platform control display will show
the diesel fuel level.
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