Cushman HAULER 800 2012 Technician's Repair And Service Manual page 84

ELECTRONIC SPEED CONTROL - HAULER 1000
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notices, Cautions, Dangers and Warnings.
B
sound and the vehicle will brake rapidly until it reaches
the speed of approximately 2 mph (3 kph).
The 48 volt system also incorporates an anti-stall protec-
tion feature that prevents commutator damage from
stalling the vehicle against an obstacle or ascending a
hill. The electrical power to the motor will be interrupted
intermittently allowing the vehicle to roll a short distance,
thereby allowing the internal components of the motor to
move before damage can be done.
The No Plug option (See chart on page 1) features a dif-
ferent degree of compression breaking that takes place
any time that accelerator pedal is released. The No Plug
option will rapidly slow the vehicle to a stop unless the
accelerator pedal is depressed. The three other options
will slow the vehicle to a stop at different rates unless
the accelerator pedal is depressed.
The 48 volt system is a low power consumption unit but
it will drain the vehicle batteries over a period of time. If
the vehicle is to be stored for a prolonged period of time,
the 48 volt system should be disconnected from the bat-
teries by selecting the 'TOW/MAINTENANCE' position
on the Run-Tow/Maintenance switch located under the
passenger seat.
The Electronic Speed Control system consists of three
separate units, a pedal box, speed sensor and control-
ler.
Pedal Box
The pedal box assembly is a modularized unit that con-
tains the accelerator pedal, return spring and an
enclosed box that contains the pedal position micro
switch and a solid state Inductive Throttle Sensor (ITS)
that is activated by a moving plunger attached to the
accelerator pedal. To access the pedal box, remove the
rocker panel, lift the floor mat, and remove the access
cover from the floor (Ref. Fig. 15 on Page F-18). The
Page F-18
ITS and plunger are accessed by removing the four
screws and top cover from the enclosed pedal box.
Speed Sensor
The speed sensor uses a sealed sensor to read the
impulses of a ring magnet attached to the armature shaft
of the motor. Magnetic pulses are converted into electri-
cal signals which the controller uses to determine the
motor speed.
Controller
The controller is a solid state unit that activates a sole-
noid and controls the function of the vehicle by respond-
ing to inputs from the ITS and motor speed sensor. The
controller and solenoid are located under the front seat
on the passenger side of the vehicle (Ref. Fig. 16 on
Page F-19)
Repair and Service Manual
Rocker Panel
Pedal Box
Fig. 15 Access to Pedal Box
Access Cover
Floor Mat