© 2020 Pierce Manufacturing Inc. All Rights Reserved. Seats, Seat Belts, and Safety Restraints / 4-7
GENERAL
Roll Sensor
Figure 4-1: Roll Sensor
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• Service the roll sensor(s) only if you are an authorized technician.
• Never remove the roll sensor. Removing the roll sensor will turn OFF and/or trigger deployment of the air bags
and seat restraints.
• BEFORE welding, disconnect the roll sensor and refer to “Welding Instructions” on page 6-38, for additional
welding information.
• BEFORE disconnecting the roll sensor, remove the electric power.
The roll sensor monitors the vehicle’s angle and rate of roll. Cabs may be equipped with a single roll sensor or a
master roll sensor and a slave. In the event of a side roll accident, the roll sensor sends a signal to deploy the
advanced occupant protection devices. The roll sensor stores in memory a ten-second stream of roll angle and rate
data that can be retrieved in the event of an incident.
Suspension Seat Safety System (S4S)
Figure 4-2: Suspension Seat Safety System (S4S)
POM0100
The roll sensor triggers air bags and seat restraints. Accidental deployment can cause serious injury.
Pre-Deployment Post-Deployment
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