23
Hydraulic oil inspection
Appearance
odor condition
results
Clear not discoloration
good
good
can be used
color transparency
good
with other oil mix
check viscosity, if qualified can
continue to use
Color changes like milk
well
mixed with air and water
to separate moisture or replace
hydraulic fluid
The color becomes dark brown
not
good
for oxidation
replacement of hydraulic oil
Clear color but small black spots
good
mix with other particles
can be used after filtering
4
drive system
The moving of forklift truck is powered by batteries, and the direct current is converted into
alternating current by frequency conversion system, which is realized by controlling the AC motor on the
driving wheel. The AC motor converts the high speed and low torque into low speed and high torque
through the gear reduction box, and finally the drive wheel performs the action. The speed of walking is
realized by frequency conversion control of motor speed, which is controlled by the accelerator.
