November 2019

components are more sensitive. The tool will pay for itself if the job has to be done again. “Lastly, Technical bulletins are becoming more widely available on manufacturers’ websites, so it is always worth checking if there is one for your job, as this could save a lot of time and effort.” Alistair added: “Information on Schaeffler products, fitting instructions, labour times and much more can be found on the REPXPERT garage portal – www.repxpert.co.uk .“ Recent development The need for more fuel-efficient vehicles has pushed clutch and transmission technology forward. In order to meet consumer expectations and environmental requirements, self- adjusting clutches (SACs) have become increasingly common on vehicles. As these cars enter the aftermarket, the demand for replacement parts for these systems is increasing. Les Kershaw, Sales Manager at National Auto Parts commented: “A recent development in clutch is the availability of aftermarket self- adjusting clutches (SAC). National Auto Parts offer several SAC clutch kits and are developing new ones regularly. With vehicles becoming more efficient, thanks to these systems, it is more important than ever for clutch and transmission systems to be maintained properly. The situation for SAC systems at the moment could limit choice for parts for garages according to John: “Standard practice NOVEMBER 2019 AFTERMARKET 47 www.aftermarketonline.net and matching’ parts during a clutch replacement – use all components from just one brand, as they will be optimised to work together. If the flywheel is also being replaced, again use the same brand. We have seen many problems arising from mixing different branded components. “I would also use a reputable and trusted supplier; if there are any problems they can then be quickly and easily resolved and advice given if required. Sometimes, workshops need support, and we also have to remember there is a vehicle owner paying for the work at the end of the day.” Advice When it came to advice for garages facing a clutch job, Alistair observed: “Spend 10 minutes researching the job. Special processes are becoming more common, mistakes can be costly. Software updates can resolve a lot of faults, so these are always worth checking before removing major components. “Use the correct tools. Tolerances are a lot finer these days and Below: LuK Renault 2CT clutch is to observe recommended service intervals. The more complex the transmission system the narrower the choices are for aftermarket parts and service. Not all independents can carry out VW DSG clutch changes for example. “For many vehicle applications there are OE, OES and aftermarket options for spare parts and service. However, as modern transmissions have become more complex the choice is narrowed down to OE or OES only, for example, VAG’s DSG clutches and their variants. Aftermarket suppliers do offer DSG clutches, but the parts in the box will be OE and priced accordingly.” National Auto Parts: Pull type clutches tip For pull type clutches: Check that the release bearing has correctly located in the clutch cover after gearbox refitting by connecting the clutch release cable/hydraulics and operating the clutch pedal before refitting the subframe and suspension. If the bearing has not located properly it can be remedied relatively easily. The same method can also be used for CSC applications to make sure the hydraulic connections are sound