tire servicing program it is more than just safety

Tire Servicing Program it is more THAN A SAFETY REMINDER

it is a Lesson in PREVENTION in the WORKPLACE

Know this data before you take the tire in for repairs

Provincial or State Regulation

• Equipment– Remote chuck– Restraining devices– Bead expander

What are the Regulations

• Work Procedures– Inspecting all wheel components– Mounting and inflating a tire– Installing and removing tire assemblies– De-mounting tires

What are the Regulation

• Precautions– Deflate before mounting– Clean and inspect – Use a cage or restraining device– Bead expander limits


• Precautions – continued– Inflate to specified pressure– Do not weld or heat assembled rim– Deflate multi-piece rim wheels – Multi-piece rim and wheel components


• Precautions – continued– Dual wheel arrangement, both tires must be

deflated – Don’t interchange– Multi-piece rim wheels


• Training– Required for all workers working on wheels

Definitions

• De-mounting • Disc Wheel• Installing a Tire Assembly• Large Vehicle• Restraining Device

Definitions

• Mounting a Tire• Multi-Piece Wheel• Rim• Rim Manual• Service or Servicing

Definitions

• Service Area• Tire-Assembly• Wheel• Trajectory

Definitions

Responsibilities

• Employer– Establish and implement safe work procedures– Proper tools and charts are available– Records of worker instruction and training

Responsibilities

• Supervisors– Ensure workers are trained– Ensure workers are following safe work

procedures

Responsibilities

• Workers– Follow safe work procedures

General Safety Issues

• Explosive power• Service and safety manuals• Current charts or rim manuals• Use only recommended tools• Appropriate personal protective equipment


• Tube tires• Underinflated tire• Tires driven while flat• Separated tire


• Barriers and Restraining Devices– Must be used– Inspection prior to daily use– Inspection after any separation of parts

• Barriers and restraining devices must be used in tire servicing. These devices are designed to withstand the forces that might be released during tire servicing and they are designed to prevent the wheel components from being thrown outside or beyond the device.

• Restraining devices and barriers will be visually inspected prior to each day’s use.• Restraining devices and barriers are also to be inspected after any separation of the rim wheel components or sudden release of

contained air.


• Barriers and Restraining Devices – continued– Cracks at welds– Cracked or broken components– Bent or sprung components – Pitting of components due to corrosion– Other structural damage that may decrease its

effectiveness– Repair and re-inspect


• Airline Assembly– Clip on chuck– An in-line valve

with a pressure gauge

– Sufficient length of hose

Procedures

De-Mounting Tires and Rims1. Single Piece Rims2. Multi Piece Rims

Procedures – Demounting

1. Demounting Single Piece Rim– Jack vehicle and remove wheel– Remove the valve core– Fully deflate the tire– Run a wire through the valve stem– Dual wheels – inspect inside tire assembly


1. Demounting Single Piece Rim - continued– Do not remove de-mountable dual wheel until pressure is

released– Remove the wheel nuts and remove the wheel assembly– Break bead according to manufacturer – De-mount the tire from the narrow ledge side – Never hammer on the rim


2. Demounting Multi Piece Rim– Jack vehicle to remove wheel– Remove the valve core– Fully deflate the tire– Run a wire through the valve stem– Dual wheels – inspect inside tire assembly– Deflate both tires if damage to inside wheel


2. Demounting Multi Piece Rim - continued– Ensure all components are cleaned– Ensure pressure is released– Remove wheel nuts and wheel assembly


2. Demounting Multi Piece Rim - continued

– Break bead– Never hammer on the rim or the lock ring– Disassemble the tire assembly

Procedures - Assembly

1. Component acceptability2. Inspect single piece rim3. Reassemble single-piece rim4. Inspect multi piece rim5. Reassemble multi-piece rim


1. Component Acceptability– Do not interchange components– Inspect prior to assembly– Tag damaged components and remove from area– Components to be clean– Check tire and wheel size and type


2. Inspection of Single Piece Wheel– Clean and examine wheel, valve stems and tire

carefully– Paint the rim with a metal primer where necessary– Inspect the inside of the tire


3. Reassembly of Single Piece Rims– Replace stems or grommets– Lubricate tire beads and mating surfaces– Replace old O-Rings – Work tire beads one at a time over rim flange– Tire changing machine


3. Reassembly of Single Piece Rims - continued– Do not apply heat– Do not use flammable substances to seat beads – Use restraining device when inflating– Do not inflate if flat, solid surface is in trajectory– Stay out of trajectory when inflating


3. Reassembly of Single Piece Rims – continued– Remove bead expander– Clip-on air chuck– Stand outside the trajectory– Ensure wheels are lined up– Inspect the tire and rim– Do not rework damaged wheels


4. Inspection of Multi Piece Rims– Look for signs of cracking, wear, corrosion,

deformation, broken beads:• Sprung side/lock rings• Cracked rings/rims• Bent flanges• Tool marks• Loss of contour• Metal thickness of the mating surfaces


5. Reassemble Multi Piece Rims– Replace old O-Rings– Lubricate– Put the rim parts into place– Never “air-up” a wheel of which you are unsure


5. Reassemble Multi Piece Rims - continued– Inflate to 10 psi and ensure that parts fit– Inflate to manufacturer’s specifications– Stay out of trajectory when inflating


5. Reassemble Multi Piece Rims - continued– Do not apply heat – Do not use flammable substances – Inflate to recommended pressure– Deflate completely– Re-inflate to the manufacturer’s recommended

pressure – Re-check before removing from restraining device

Procedures - Mounting

• Mounting Disc Wheels– Check wheel studs for damage– Check tire diameters on dual wheels– Check tires for separations– Ensure mounting surfaces are clean


• Mounting Disc Wheels – continued– Use the proper cap nuts– Use proper tightening sequence and torque levels– Use air wrenches only to spin on the nuts– Recheck and retighten cap nut at 80k to 160k


• Mounting Demountable Tire Assemblies– Check all studs, clamps, spacer bands– Check diameters of tires– Do not mix tire types on the same axle– Ensure mounting surfaces are clean and smooth


• Mounting Demountable Tire Assemblies - continued– Place inflated tire assembly on wheel– Guard against misalignment– Install proper rim clamps and nuts– Use proper tightening sequence / torque levels– Recheck / retighten clamp nuts after 80k to 160k

Instruction and Training

• Worker instruction and training must include:– De-mounting of tires– Inspection and identification of rim wheel

components– Installing and removing rim wheels– Mounting of tires

Instruction and Training

• Worker instruction and training - continued

– Use of a restraining device or barrier– Handling of rim wheels– Inflation of a tire– Understanding trajectory

Summary

• Government Safety Regulations• Definitions• Responsibilities• General safety• Procedures• Requirements for worker instruction and

training

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