LGMG AR45J, Maintenance Manual

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LGMG North America Inc. Maintenance Manual
5
changes in the hydraulic oil level which can
indicate problems with the hydraulic system.
1) Make sure the boom is fully telescoped,
then visually check the level gauge on the
hydraulic tank.
Result: The hydraulic oil level should be above
the middle scale of the level gauge and below
the maximum scale of the level gauge.
2)
Hydraulic oil should be added as needed.
Do not over-fill the hydraulic tank.
Use
temperature
Oil type
Remark
The lowest
temperature
＞
-25
℃
L-HV32 Low
temperature
hydraulic oil
Chevron
-40
℃ ＜
The
lowest
temperature
≤
-25
℃
L-HS32 Ultra
low
temperature
hydraulic oil
The lowest
temperature
≤
-40
℃
10# Aviation
hydraulic oil
1.5 Checking Oil Level in the
Drive Hub
Check oil level in the drive hubs every 250
hours or quarterly.
Incorrect oil level in the drive hub will lead to
reduced machine performance. Continuous use
with low oil level will result in damage to
components.
Figure 1-2
1. Oil filler 2. Viewing port
1)
There are two fill plugs on the drive hub.
Drive the
machine until one fill plug is at its’
highest point.
2)
Remove the other fill plug and check the oil
level.
Result: The oil level shall be the same as the
bottom of the fill plug hole.
3)
When necessary, remove the upper plug
and add oil until the oil level is the same as
the bottom of the lower fill plug hole.
4)
Apply pipe thread sealant to the fill plug and
install the plug in the drive hub.
5)
Repeat this step for each drive hub.
1.6 Replacing Drive Hub Gear
Oil
Replace the oil after the first 50 hours of
operation, and then every 1,000 hours or yearly
afterward.
It is necessary to replace the gear oil to maintain
good equipment performance and service life.
Failure to replace the oil every year may result
in reduced equipment performance. Continuous
use may result in damage to components.
1) Select the drive hub to be maintained, and
drive the machine until one plug is at the
lowest point.
2) Remove the two plugs and drain the oil into
a proper container.
3)
Drive the machine until a fill plug is at the
highest point.
4) Add oil from the fill plug hole at the high
point until the oil level is the same as the
bottom of the lower fill plug hole. Install the
plug.
5) Repeat this procedure for the remaining
drive hubs.
Use temperature Oil type
30°C
＜
The lowest
temperature
85W/140