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NOTE: VEHICLES LOCATED IN BRITISH COLUMBIA. THE MIDLAND-GRAU AIR DRYER RELIEF VALVE ON THESE VEHICLES MAY BE SUSCEPTIBLE TO FREEZING. FREEZE-UP OF THE RELIEF VALVE IN CONJUNCTION WITH A BLOCKAGE IN THE AIR LINE BETWEEN THE AIR DRYER AND THE WET TANK MAY CAUSE AN OVERPRESSURE CONDITION WHICH MAY IN TURN CAUSE THE DESICCANT CARTRIDGE TO SEPARATE FROM THE DRYER HOUSING OR CAUSE BREAKAGE OF THE DRYER HOUSING. EITHER OF THESE CONDITIONS MAY RESULT IN INJURY TO PERSONS STANDING NEAR THE DRYER AT THE TIME OF FAILURE. CORRECTION: VEHICLES WILL BE EQUIPPED WITH A REDESIGNED RELIEF VALVE AND DESICCANT CARTRIDGE.
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