PECM Issue 28 2017 | Page 119

manufacturers are constantly developing their trailer axles, components and parts, building on the latest science and technology, to deliver the highest levels of performance in their systems. The vehicle manufacturers and OE suppliers invest millions each year in R&D and testing to ensure that the components offer the highest levels of performance and safety. run significant risks to life and limb. Even the use of non-OE accessories – including non-approved tyres, rims and wheel hub covers – can increase the risk of accident. Should the worst happen, when the finger of blame is inevitably pointed, legally the driver, the maintenance manager and the fleet owner/manager all bear the burden of responsibility. These components are designed-in from the outset, the manufacturers specify exact parameters for materials, torque values and permissible load limits. The quality of non-OE components can vary wildly. There is no way of knowing where or how a part has been manufactured, and no information on the quality of the materials used. They do not, and cannot, assess replacement parts from external sources, so there is no guarantee that the aftermarket suppliers will meet the specifications for these critical parameters. Even if the part is of high quality, it won't have been designed-in from the start. Using an OE part is the only way to guarantee suitability and the only way to maintain any outstanding warranty. Significant deviations from the original specification are not only possible, but, in fact, likely. If you deviate from the permissible or required tightening processes and torque values, then you So how can the fleet operator ensure that he is getting approved OE replacement parts? The simple answer is to source parts directly from the manufacturer or an approved dealer. This information should usually be readily available on the manufacturer's website, but if you can't find it then most OE parts are supplied with QR codes or hologram stickers to indicate their OE status. Do be careful when specifying parts and remember, just because a part says it's suitable for a system it doesn't make it OE approved. For example, genuine parts for legacy Mercedas-Benz axle systems are only available in the UK from JOST Axle Systems and Mercedes-Benz. There are many aftermarket parts on the market that are advertised as Mercedes- Benz Trailer Axle Systems, but, unless those parts come from one of these two companies, they are not OE parts. The problems that can accrue from the use of non-OE parts can quickly hit the bottom line; failing time and again to deliver the performance, durability, reliability and ultimate longevity of genuine OE parts. Not only that, use of these non-OE parts can invalidate warranty and compromise safety. Issue 28 PECM 119