Axle play detectors, commonly referred to as shaker plates, are workshop diagnostic systems used to identify wear or looseness in steering and suspension components.
Using controlled hydraulic movement, the system simulates driving forces while the vehicle remains positioned over an inspection pit. This allows technicians to clearly observe movement in components such as ball joints, suspension bushes, king pins, steering linkages, and suspension mounts.
EquipSpecs supplies Ryme Worldwide axle play detectors for both light vehicles and heavy commercial vehicles, supporting accurate steering and suspension diagnostics.
What Faults Can an Axle Play Detector Identify?
Axle play detectors help technicians identify steering and suspension faults that may be difficult to detect during a manual inspection.
By remotely applying controlled movement to the wheels while the vehicle remains under load, technicians can quickly observe excessive movement, wear, or looseness in critical components.
Common faults detected include:
- Worn suspension bushes
- King pin wear
- Ball joint wear
- Steering linkage wear
- Track rod end movement
- Loose wheel bearings
- Steering rack and steering component wear
- Control arm and stabiliser component wear
How Axle Play Detectors Work
Axle play detectors use an electro-hydraulic drive system to move heavy-duty steel plates in controlled directions.
Once the vehicle is positioned on the plates, the technician is able to remotely activate the system. The plates then apply controlled forces to the wheels, simulating authentic operating conditions.
Typical plate movements include:
- Lateral movement – simulates cornering forces
- Longitudinal movement – simulates braking and acceleration forces
- Cross movements – applies multi-directional stress to suspension and steering components
While the plates are operating, the technician can observe steering and suspension components from the inspection pit, making it possible to identify wear quickly and accurately.
Light Vehicle Axle Play Detectors
For workshops servicing passenger vehicles and light commercial vehicles, axle play detectors provide a reliable way to assess suspension condition during inspections.
EquipSpecs supplies Ryme Worldwide light vehicle play detectors designed for vehicles with a gross vehicle weight of up to 3,500 kg.
These systems are typically used in:
- WOF inspection workshops
- Automotive service centres
- Diagnostic workshops
- Vehicle testing facilities
Light vehicle play detectors are engineered to provide smooth, controlled movement that allows technicians to accurately observe steering and suspension wear during inspection.
Available light vehicle models include:
DHL Classic Axle Play Detector
DHL Total Axle Play Detector
DHL Total 4 Axle Play Detector
Heavy Vehicle Axle Play Detectors
Heavy commercial vehicles place significantly higher loads on steering and suspension components. For this reason, heavy vehicle inspection lanes require play detectors specifically designed for higher axle loads.
EquipSpecs supplies heavy vehicle axle play detectors capable of testing vehicles with axle loads of up to 18 tonnes per axle.
These systems are commonly used in:
- COF inspection lanes
- Heavy vehicle workshops
- Fleet maintenance facilities
- Transport operator workshops
Heavy vehicle play detectors use robust hydraulic systems and reinforced test plates to generate the forces required to test larger vehicles safely and effectively.
Available models include:
DHU Classic Axle Play Detector
DHU Total Axle Play Detector
DHU Total 4 Axle Play Detector
Integration with Inspection Pits
Axle play detectors are typically installed flush with the workshop floor and integrated into vehicle inspection pits.
This configuration allows technicians to safely observe suspension and steering components from below while the system applies movement to the vehicle wheels.
EquipSpecs has extensive experience designing and installing prefabricated steel inspection pits for vehicle inspection lanes. These pits can be configured to integrate seamlessly with:
- Axle play detectors
- Truck roller brake testers
- Roller brake testers for light vehicles
- vehicle inspection equipment
Integrating these systems into a single inspection lane improves workshop workflow and enables technicians to carry out multiple inspection procedures efficiently.
For workshops planning new inspection facilities or upgrading existing infrastructure, this integrated approach helps create a complete vehicle testing solution as lanes can also include lighting, ventilation, brake testing systems, and additional workshop infrastructure.
Benefits of Axle Play Detectors in Workshop Inspections
Axle play detectors provide several advantages for workshops performing vehicle inspections and maintenance diagnostics.
Faster suspension fault identification
Controlled plate movement allows technicians to quickly identify worn or damaged suspension components that may not be visible during static inspections.
Improved diagnostic accuracy
Testing the vehicle under load conditions helps reveal faults that only occur when the vehicle’s weight is applied to the suspension.
Increased technician safety
When used with an inspection pit, technicians can safely observe vehicle components without needing to manually manipulate the vehicle.
Efficient workshop workflow
Play detectors allow suspension checks to be performed quickly as part of a wider vehicle inspection process.
Suitable for multiple vehicle types
Systems are available for both light vehicles and heavy commercial vehicles, making them suitable for a wide range of workshops.
Axle Play Detector Solutions from EquipSpecs
EquipSpecs supplies and supports a range of axle play detectors for both light and heavy vehicles, helping workshops improve their diagnostic capability and maintain safe, reliable vehicles.
Our team works closely with workshop owners, fleet operators, and inspection facilities to ensure equipment is correctly specified, installed, and supported for long-term operation.
Whether for a WOF workshop, COF inspection lane, or fleet maintenance facility, EquipSpecs can assist with specifying the right axle play detector solution for your operation.
Frequently Asked Questions: Axle Play Detectors (Shaker Plates)
An axle play detector, also known as a shaker plate, is a hydraulic workshop testing system used to identify wear in steering and suspension components by applying controlled movement to the vehicle wheels.
Axle play detectors are available for both light vehicles (up to 3,500 kg) and heavy commercial vehicles with axle loads of up to 18 tonnes per axle.
Shaker plates use electro-hydraulic movement to apply controlled forces to the vehicle wheels. This movement simulates authentic driving conditions, allowing technicians to observe abnormal movement or worn components during inspection.
Light vehicle axle play detectors are designed for passenger vehicles and light commercial vehicles, while heavy vehicle systems use reinforced hydraulic components and higher-capacity test plates to safely test larger axle loads.
Yes. Axle play detectors can often be integrated into existing inspection pits or incorporated into new inspection lane designs, depending on workshop layout and infrastructure.
Yes. Axle play detectors are commonly installed as part of new workshop builds, inspection lanes, and vehicle testing facilities.
Yes. Fleet maintenance workshops commonly use axle play detectors to help identify steering and suspension wear during routine servicing and preventative maintenance inspections.
Axle play detectors help workshops:
Identify faults more quickly
Improve diagnostic accuracy
Improve inspection workflow efficiency
Carry out steering and suspension checks under load conditions