Spicer TPCS (Tire Pressure Control System) Driver Instructions User Manual
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Tire Changing Procedure
If the tire being removed is not flat, high pressure air will be released when the tire hose is discon-
nected from the valve stem. To minimize air loss, install valve stem cap from the wheel valve to
the tire stem to stop the flow of air from the tire upon removal of the hose. Use caution and eye
protection.
NOTE: On duals, both tires will go flat should damage occur to either tire. If tire damage is so
severe that RUN FLAT operation cannot maintain sufficient operating pressure, the damaged tire
can be disconnected and the air line plugged or capped to allow the good tire to be re-inflated.
This should be done in emergency situations only.
NOTE: Mark the alignment of the tire valve stem to the hub is necessary.
NOTE: When removing hoses, store in a clean, dry location to prevent contamination and/or dam-
age.
Wheel Removal - Steer
1.
Remove Tire Hose. Disconnect tire hose from valve stem, then disconnect hose from wheel
valve.
2.
Cap Wheel Valve in the hubcap to prevent wheel valve contamination. Rotate the tire with
the hub so that the valve is on the bottom (wheel valve protected).
3.
Remove the wheel nuts and wheel/tire assembly.
Wheel Removal - Dual
1.
Drive axle only. Remove control hose from the hub, then disconnect hose from wheel valve.
Plug the air outlet in the hub to prevent contaminants from entering the system.
2.
Disconnect the tire hoses from the wheel valve tee and plug or cap the line with the appropri-
ate fitting.
3.
Remove the wheel nuts and wheel/tire assembly.
Wheel Installation
NOTE: The tire valve stem core cannot be used on vehicles equipped with the Dana Tire Pressure
Control System.
Reverse the above procedure for installation.
CAUTION