Tire Servicing Program

Tire Servicing Program

Agenda• WorkSafeBC Requirements • Definitions• Responsibilities• General safety

Agenda• De-mounting• Assembly• Mounting• Instruction and training

WorkSafeBC Regulation

• Equipment• Remote chuck• Restraining devices• Bead expander

WorkSafeBC Regulation

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

WorkSafeBC Regulation

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

WorkSafeBC Regulation

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

WorkSafeBC Regulation

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

be deflated • Don’t interchange• Multi-piece rim wheels

WorkSafeBC Regulation

• 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

General Safety Issues

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

General Safety Issues

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

General Safety Issues

• 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

General Safety Issues

• 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

Procedures – Demounting

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

Procedures – Demounting

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

Procedures – Demounting

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

Procedures – Demounting

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Assembly

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

Procedures - Mounting

• 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

Procedures - Mounting

• 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

Procedures - Mounting

• 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• WorkSafeBC• Definitions• Responsibilities• General safety• Procedures• Requirements for worker instruction and

training

Questions