Identify worn shocks, bushings, and leaf springs early – before they destroy tyres and compromise passenger comfort on commercial routes.
What you will gain from this guide
- Uneven tyre wear often indicates alignment or bush failure
- Excessive bounce after bumps suggests worn dampers
- Clunking over potholes points to bushings or stabiliser links
- Replace shocks in pairs per axle for balanced handling
Suspension components degrade gradually. Drivers adapt to the feel – until a failed shock causes loss of control on a loaded curve. Workshops should include suspension checks in every periodic service, not only when complaints arise.
Who this helps: Workshop mechanics, fleet supervisors, and owner-drivers who service commercial vehicles regularly.
Five signs to watch
- Nose dive under braking – weak front shocks or bushings
- Body roll in corners – stabiliser bar links or rear shocks
- One corner sitting low – broken leaf spring or air leak (if equipped)
- Tyre cupping or feathering – alignment or worn joints
- Fluid leak on shock body – damper seal failure
Replacement best practices
Use genuine or OEM-spec shocks rated for your gross vehicle weight. Torque chassis bolts to spec after load settles – many workshops skip this step, causing premature bush crush.
Practical tip: After suspension work, always perform four-wheel alignment – even if the customer did not complain about steering pull.
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