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POLARIS COMMERCIAL
CENTRE D'AIDE
9/13/2021

Taylor-Dunn SS-534, SS-536, SS-546 and MX-1600 Vehicle Controls

The information in this article applies to standard SS-534, SS-536 and SS-546 and MX-1600 model series vehicles – model numbers SS-025-034, SS-025-36, SS-025-46 and MX-021-00. Note that vehicle customization may cause variation from the information in this article.

The Model SS personnel carriers are shown below.

SS vehicles

VEHICLE CONTROLS

vehicle controls

1. Start Switch: The start switch turns the vehicle electrical control system ON. This switch may or may not require a key to operate. Rotate the switch clockwise to turn the vehicle system ON and counterclockwise to turn the vehicle system OFF. The vehicle will not run when in the OFF position.  

The switch should be in the OFF position whenever the operator leaves the driver’s seat. This switch is designed to secure and disable the vehicle. The key can only be removed when the switch is in the OFF position. 

2. Headlight Switch: Push the top of the headlight switch to turn the lights ON. Push the bottom of the switch to turn the lights OFF. 

3. Strobe Light Switch: The strobe light switch is optional. If equipped, push the top of the switch to turn the strobe light ON. Push the bottom of the switch to turn the light OFF. 

4. Hour Meter: The hour meter is optional. If equipped, the hour meter displays how many hours the vehicle has been in operation. 

5. Direction Control Switch: This switch determines the direction of travel.

The switch has three positions:  

  • FORWARD: Push the top of the switch all the way in to travel forward.  
  • REVERSE: Push the bottom of the switch all the way in to travel in reverse.  
  • OFF: There is a center position between forward and reverse; this is the “direction” OFF position. The direction OFF position does NOT turn the vehicle control system OFF. Use the start switch to turn the vehicle control system OFF. Refer to the start switch entry in this section for details regarding turning the vehicle control system OFF. 

6. Battery Status Indicator: There are two available BSIs depending on how your vehicle was ordered.  

Battery Status Indicator: Bar Graph

C-432 battery status indicator
The battery status indicator is located to the left of the hour meter. The battery status indicator has a LED bar graph that indicates the relative state of charge of the battery.  

The top LED will light only when connected to a fully charged battery or after completing a charging cycle. Successive lower LEDs will light as the battery charge diminishes.  

When the second-to-bottom LED flashes, the battery is in energy reserve and should be placed on charger as soon as possible. When the two bottom LEDs are alternately flashing, the batteries are empty and the truck should be taken out of service and charged to avoid damaging the batteries.  

The BSI will reset to fully charged only after a complete charge cycle occurs. A complete charge cycle is defined as battery voltage exceeding 2.35 volts per cell for a minimum of 6 minutes. 

Battery Status Indicator: Analog

analog BSI

The normal operating range is in the green zone. Park the vehicle for a few minutes for an accurate reading. The vehicle needs charging if it is in the yellow zone. During and immediately following charging, the needle will be in the red zone to the right. The needle will move through the green zone toward the yellow zone as the batteries discharge.  

Charge the batteries when the needle is in the yellow zone. If it is in the red zone to the left, the batteries are empty and the truck should be taken out of service and charged to avoid damaging the batteries. 

Hour Meter: The hour meter is optional. If equipped, the hour meter displays total time the vehicle has been in operation. Time is accumulated only while the vehicle is moving with the throttle pedal pressed. 

OPERATOR CONTROLS

brake

Throttle Pedal: The throttle pedal is located to the right of the brake pedal. It controls the speed of the vehicle and operates like the throttle pedal in an automobile. Press the pedal to increase speed and release the pedal to decrease speed. 

Foot Brake Pedal: The foot brake pedal is located to the left of the throttle pedal. This pedal is designed for operation with the driver’s right foot. It works like the brake in an automobile. Applying pressure to the brake pedal slows the vehicle according to the amount of pressure applied. Relieving pressure from the pedal releases the braking action. 

Horn Switch: The horn switch for this vehicle was designed to be activated using the operator’s left foot. The foot horn switch is located on the left side of the operator floorboard. To activate the horn, press the switch with your left foot. 

Steering 

steering

The SS and MX model series are available with either tiller or steering wheel steering system.  

Tiller: Push the tiller away from you and to the right to make a left turn. This is rotating the tiller counterclockwise. Push the tiller away from you and left to make a right turn. This is rotating the tiller clockwise.  

Steering Wheel: The steering wheel and steering system are like an automobile. To turn right, turn the steering wheel clockwise. To turn left, turn the steering wheel counterclockwise. 

Parking Brake, Foot Operated: The parking brake is part of the foot brake pedal. To set the parking brake, push down on the lower half of the brake pedal until the pedal locks in the down position. To release the park brake, apply pressure on the upper half of the brake pedal until the pedal disengages from the locked position. 

Interlocks 
Operator Presence: A switch located under the driver’s seat disables the power to the vehicle when the driver leaves the seat. The driver must be seated for the vehicle to operate. Whenever the driver leaves the vehicle, the driver should turn the key switch to the OFF position. Also place the Direction Control switch in the center OFF position.  

Built-In Charger: If equipped with a built-in charger, the charger interlock is designed to disable the vehicle from being driven while the AC charger cord is plugged into a functioning power source. This interlock is located inside the charger cabinet.  

Portable Charger: If equipped with a portable charger, the charger receptacle has a switch that disables the vehicle from being driven while the DC charging cord is connected.  

Warning: Do not dismount the operator’s seat while the vehicle is in motion. Getting off the seat will activate the Operator Presence circuit, rapidly slowing the vehicle and applying the park brake. The abrupt slowing of the vehicle may result in severe bodily injury. 

For more information, refer to your Vehicle Operator and Service Manual
To service your vehicle, see an authorized Taylor-Dunn Dealer. To find a dealer near you, use the Dealer Locator.  

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