© Mitsubishi Forklift Trucks 2013. All
© Mitsubishi Forklift Trucks 2013. All
rights reserved.
rights reserved.
Revision: B
Revision: B
Document ID: 615023
Document ID: 615023
204 (244)
204 (244)
PBV20N2
PBV20N2
Service
Service Manual
Manual
15.11
15.11
Electrical steering
Electrical steering
NOTE: The electrical steering option is
NOTE: The electrical steering option is installed to the truck
installed to the truck during manufactu
during manufacturing, so
ring, so
this option needs to be selected prior to purchasing the truck.
this option needs to be selected prior to purchasing the truck.
Electrically powered steering helps the driver to steer the vehicle by
Electrically powered steering helps the driver to steer the vehicle by augmentin
augmenting the
g the
steering effort of the steering wheel. The electric
steering effort of the steering wheel. The electric motor adds controlled energy to the
motor adds controlled energy to the
steering mechanism
steering mechanism, so the
, so the driver needs only a modest effort to
driver needs only a modest effort to turn the truck. Power
turn the truck. Power
steering helps considerably when the vehicle is
steering helps considerably when the vehicle is stopped or moving slowly.
stopped or moving slowly.
The power steering system has no direct mechanical connection to the steering. The
The power steering system has no direct mechanical connection to the steering. The
electric motor provides assistance force, which is controlled by the
electric motor provides assistance force, which is controlled by the electric steering
electric steering
controller.
controller.
When the tiller is turned to the right or left, the tiller
When the tiller is turned to the right or left, the tiller sensor informs the steering
sensor informs the steering
controller that the tiller is
controller that the tiller is turned. The controller starts to turn
turned. The controller starts to turn the steering mechanism
the steering mechanism
with the steering motor. There are two
with the steering motor. There are two feedbacks devices; the sensor bearing in the
feedbacks devices; the sensor bearing in the
steering motor and the
steering motor and the outer feedback sensor, which provides feedback information to
outer feedback sensor, which provides feedback information to
the controller. With this information, the controller knows the actual position of
the controller. With this information, the controller knows the actual position of the
the
turned wheel and can handle the steering movements carefully.
turned wheel and can handle the steering movements carefully.
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