Spicer TIMS (Tire Inflation and Monitor System) for Trailers Installation Guide - Manual (Page 9)

6
Components
Components
Component Description
Tire Hose (with integral check valve)
• Provides an air passage from the hubcap tee or
straight fitting to the tire.
• Integral check valves in the tire hoses allow the air
lines and seals to remain non-pressurized when the
system is not checking or inflating the tires.
• No modification to the standard valve stem or core is
required.
Rotary Joint (RJ)
• Provides a means to allow the air to flow from a non-
rotating axle spindle to the rotating hubcap.
• The RJ is composed of seals and bearings. The air
seal prevents leakage from the rotating shaft and the
oil seal guards against contamination.
• Provides a vent for air pressure in the hubcap during
normal use and in the event of rotary joint damage.
• Under normal operation, the RJ will be nonpressur-
ized for the majority of the time.
Manifold
• Solenoids control the flow of air to tires.
• Pressure sensor reads tire pressure.
• Serviceable inlet filter reduces contamination from
the air source.
Electronic Control Unit (ECU)
• Controls the manifold to read and maintain tire pres-
sures.
• Performs a lamp check to inform the driver that the
system is powered and operational.
• Turns on the warning lamp when the measured tire
pressure drops more than 10% (typical value) below
the target pressure.
• Detects faults and displays service codes via the
warning lamp.
• Provides on-board diagnostic support over a indus-
try standard SAE J1708/J1587 communication inter-
face.
• Provides diagnostics support via blink-codes.
• Stores historical data for future use.
Controller Assembly
• Manifold
• ECU
• Mounting bracket