A method and apparatus for welding motor vehicle body component subassemblies at a weld station. First and second pallets (24,50) are arranged for reciprocal movement between a load/unload station (14,16) and the weld station (12) and the pallets (24,50) are alternately moved from a load/unload station (14,16) to the weld station (12) while the other pallet (50,24) is moved from the weld station (12) to a load/unload station (16,14). Each pallet (24,50) has a plurality of substations (RPS10,...,RPS50) for receipt of component subassemblies and, while each pallet (24,50) is at the load/unload station (14,16), the component subassembly at each substation (RPS10,...,RPS40) is moved to the next successive substation (RPS20,...,RPS50) and a further component is added to the moved component.
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