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BITA warns against forklift truck modifications

BITA and FLTA warn that unauthorised modifications can endanger staff and invalidate warranties

Forklift truck modifications are offered by many companies and are widely advertised, but they are far from risk free – and can have consequences for health and safety and invalidation of warranties.


BITA Secretary-General James Clark explains: “A recent presentation to our Truck Suppliers Group (TSG) clearly demonstrated the risks and dangers behind unauthorised modifications, making the point that

assessment and implementation of truck modifications is a skilled task requiring detailed and specialised engineering knowledge.”


Truck modifications that are not factory approved may affect capacity, stability or safety requirements. Companies making modifications do not realise the consequences, or are not aware of their responsibilities and liabilities, should something go wrong with a modification at a later date.


There is a very clear standard for the safety requirements of industrial trucks, BS EN ISO 3691-1:2015, which states in paragraph that ‘unauthorised truck modification is not permitted’.


“It’s not as if the regulations are hard to understand”, continues Clark. “However only the most cursory web search is required to identify companies advertising modification changes to forklift trucks, as if this were normal practice and presented no safety hazards whatsoever.”


But it isn’t only BITA that is concerned about such modifications. Fellow industry body the Fork Lift Truck Association (FLTA) is equally concerned: “This is an important industry-wide issue, and is especially important when trucks are leased,” said Peter Harvey MBE, FLTA Chief Executive.


“Unauthorised modifications or repairs – even changing tyres – could invalidate rental contracts or manufacturer warranties, leaving users to foot repair bills. So it is crucial that  those utilising lift trucks understand what they can and cannot do. Failure to do so puts them at risk of unexpected repair bills and much more. Before making any changes to the original equipment customers must consult the manufacturer or authorised dealer.” 


Examples of modifications commonly being offered include mast reductions, drive-in racking modifications, and perhaps most disturbingly, truck head guard modifications. BITA’s TSG  has been provided with some examples of real concern:


·         A cab-pillar section was removed and re-welded as part of a drive in racking modification. Without knowledge of the exact material grade used in manufacture, it would be difficult or impossible to certify the welding and it is extremely doubtful whether the modification would pass an ISO 6055 impact test

·         A counterbalance truck fitted with extended 15ft-long forks, dangerously reducing stability

·         Fork-mounted ‘safe’ access platforms, advertised as though permitted for routine use

·         Hoists mounted to overhead guards, reducing strength, impeding operator visibility, and applying loads outside the design limits


These are just a few examples, in addition there are more ‘informal’ modifications such as adding additional weight (in the form of drums full of water or toolboxes filled with concrete) to increase the lifting capacity of counterbalance trucks.


“We are sure there are many more examples out there, and accidents and deaths have been linked to making unauthorised modifications that affect the safe operation of trucks”, adds Clark. “Those undertaking such work should understand that, depending on the modification, they may have inadvertently taken on the responsibilities of being the equipment manufacturer, with all the risks of prosecution and redress this entails.


“Modification of a forklift truck without the manufacturer’s approval could invalidate the warranty and the CE marking, making it difficult if not impossible to re-sell elsewhere. This is an issue to which, as an organisation which cares deeply about safety at all levels, causes us great concern”, concludes Clark.



Issued on behalf of BITA

Media contacts

Floyd Jebson

+44 (0)1869 353 813 |


Andrew Vincent

+44 (0)1869 353 800 |


BITA contact

James Clark, Secretary General

+44 (0)1344 623 800 |

Notes for Editors

- The British Industrial Truck Association, BITA, is a substantial and dynamic trade association representing a membership of 73 forklift truck manufacturers, suppliers, service providers and media operating in the UK.

- BITA is the voice of the industry in matters technical and legislative at the highest levels in Europe and internationally. It enjoys a close working relationship with bodies such as the UK Health and Safety Executive, the European Committee for Standardization (CEN) and the International Standards Organisation (ISO).

- As a member of the British Materials Handling Foundation (BMHF) BITA is allied with the Fédération Européenne de la Manutention (FEM), the European manufacturers’ association of materials handling, lifting and storage equipment.

- BITA produces a wide range of specialist publications, encompassing best practice and health and safety assurance, as well as technical guidance notes and unique market insight. Its specialist committees include the Truck Suppliers Group (TSG), Technical Policy Committee (TPC), and the Component & Services Group (CSG) among many others.

- BITA members, including many international brands, manufacture and distribute over 90% of all new forklifts procured each year in the UK. They employ 7,000 people directly, and enjoy a combined annual turnover of £1.3bn. BITA members play an increasingly important role in the UK’s overall economic health, supply chain effectiveness and environmental performance


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