Spicer TIMS (Tire Inflation and Monitor System) for Trailers Installation Guide - Manual (Page 5)

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General Information
General Information
Importance of Maintaining Proper Tire
Pressure
Maintaining proper tire pressures can result in significant
benefits for owners as well as operators. Tires are second
only to fuel as a maintenance cost. They account for the
majority of road failures, primarily as a result of underinfla-
tion. Tires represent a fleet’s number one labor maintenance
cost, contributing to over half of the total maintenance dollars
spent.
System Overview
The
Spicer Tire Maintenance System is designed to
automatically inflate tires that are below their cold tire pres-
sure setting using compressed air from the brake supply tank.
Air seals and hoses remain non-pressurized when the system
is not actively checking or inflating the tires. A warning lamp
will turn on when one or more tire pressure(s) is low by 10%
or more. The lamp will not turn on for minimal inflation
requirements of less than 10%, thus avoiding operator dis-
traction when no action is required.
If a tire is low, the remaining tires are protected from pressure
loss by integral check-valves located in each tire hose. In
addition, should system or tire maintenance be required (i.e.
leaky tire resulting in excessive inflation), the lamp will flash
multiple times at power-up indicating service is required.
218UX005
Under Inflation Over Inflation Normal Inflation