WORKING WITH TIRES AND RIM ASSEMBLIES
2
330-013-38-IGSO © 2019, Workplace Safety & Prevention Services (WSPS)
1 877 494 WSPS (9777) | 905 614 1400 | wsps.ca
Keep parts, tools, and supplies as close to you as possible
Use height-adjustable controls on hoists and platforms to position truck tires in the ideal work zone (e.g., if you
are standing, between shoulder and knuckle height)
When inflating tires,
– Keep the safety cage or other restraining device at floor level to avoid handling the tire manually
– If you must manually operate a remote valve, switch hands or use both hands at first sign of finger, hand, or
forearm fatigue
Hazard: Escaping Compressed Air and Debris (Deflating Tires)
Details
Air escaping from a tire being deflated is under high pressure. The sudden pressure drop releases a jet of air that
can inflict serious injury. This escaping air can propel dirt and debris at high speed. Under certain conditions, ice
may form in the valve stem, temporarily blocking the air flow.
Threat
Debris in eyes
Injury from the force of the air or debris
Safe Work Guidelines
Deflate and remove tires whenever:
– There is evidence of damage, failure, or deterioration of the tire or rim
– The tire has been overloaded
– The tire has been used when the pressure was less than 80% of the normal inflation pressure
Wear safety glasses
Deflate tires by removing the valve stem core from the valve stem
Keep out of the path of air escaping from the tire
When the air stops flowing, insert a probe into the valve stem to check for blockage in the valve
Deflate the tire and wheel assembly completely before removing it from the vehicle and dismounting the side
or lock rings; on dual wheel assemblies, deflate and remove both tires before you start any servicing
WSPS.CA
