Tire Changing Procedure - Mack Granite GU Series Operator's Handbook Manual

Tire Changing Procedure

CAUTION
If the tire being removed is not flat, high pressure air will be released when the tire
hose is disconnected from the valve stem. To minimize air loss, install the 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 if necessary.
Note: When removing hoses, store in a clean, dry location to prevent contamination
and/or damage.
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 appropriate fitting.
3. Remove the wheel nuts and wheel/tire assembly.
OPERATION 147