Aftermarket October 2022

There is an answer according to Darren: “Gates has taken steps to help installers get this procedure right the first time, and every time,” says Spooner. “The online digital instructions for Gates PowerGrip timing belt kits are engine specific. If loosening the camshaft is recommended by the manufacturer, installers are left in no doubt this is essential and not optional. Consequently, claims administration is reduced, customer satisfaction remains high, comebacks are avoided, and garage reputations are protected.” Dayco: Belt in oil technical update Dayco’s National Sales Manager Steve Carolan said: “Dayco, the company that pioneered the belt in oil (BIO) innovation on behalf of vehicle manufacturers such as Ford and VW, is highlighting the importance of regular maintenance in line with the VMs scheduled service intervals, to ensure the ongoing reliability of these engines. Taking the 1.2-litre PureTech engine, which is used in multiple PSA applications, as an example, according to their respective service schedules, the timing belt must be checked at intervals of between 12,500 and 16,000 miles or every 12 months, whichever comes soonest.” Steve continued: “The BIO innovation is a fantastic solution that helps this small and efficient engine to deliver incredible levels of power, alongside exceptionally low emissions and excellent fuel economy, primarily because it reduces friction in the drive system by up to 30%. However, to maintain this level of performance and to continue to operate as the manufacturer designed, they need to be serviced regularly and the condition of the belt assessed. Apart from the catastrophic consequences that would result from belt failure, belt degradation can also have serious implications to several other components, such as the oil pump and brake system vacuum pump. So, for independents servicing these vehicles, there are some practical best practice guidelines that can be followed to help them avoid these issues, including how to assess the condition of the belt, without having to resort to a complete engine strip down.” Condition Getting into specifics, Steve said: “First and foremost, irrespective of why the vehicle has come into the workshop, check the condition of the belt. This is much easier than many think, as it can be carried out by looking at the condition of the back of the belt when viewed through the engine’s oil filler. The second, which can also be carried out through this access point, is to measure the width of the belt with special tool PSA part number 1643190080, as excessive belt swell can cause binding in the drive system. “If any evidence of damage can be seen, or if its width exceeds that of the measuring tool, the belt must be replaced. However, even if no damage is obvious, but 36 AFTERMARKET OCTOBER 2022 TIMING SYSTEMS www.aftermarketonline.net contamination of any description is evident in the engine oil, further exploration is necessary as the oil sump needs to be dropped and several of the engine’s other components must be examined. Technicians need to check both the oil pump and vacuum pump strainers for any debris, and if any sign of contaminates are found in the vacuum pump, its replacement should be considered. “Three further checks then need to be made: the turbo oil feed banjo, oil pump solenoid valve and the variable valve timing solenoids, which all also need to be cleaned before refitting and finally, a visual check for debris in the oil ways should be carried out by removing the camshaft solenoids. If contamination is found in any of these areas or components, irrespective of the visual condition of the timing belt, it must be replaced. Naturally, should the belt need to be replaced, as the original equipment supplier for both the timing and auxiliary drive systems for this engine, Dayco has replacement kit – KBIO07 – in its aftermarket range.” Steve concluded: “By following these best practice procedures, workshops will not only be reducing the risk of subsequent belt failure, but they will also ensure that the engine is operating to its correct tolerances and maximising its performance and efficiency. In addition, to guide technicians and help independent workshops fully understand the issues and replacement requirements, we have produced a technical video, which can be viewed on YouTube.” To view the video, visit: https://youtu.be/jfqXu1qzuj4 For more information, visit: www.daycoaftermarket.com Vauxhall Zafira timing belt replacement In this Schaeffler INA belt installation, REPXPERT Alistair Mason is replacing the timing and auxiliary belts on a 2006, Vauxhall Zafira fitted with a 1.9 CDTI (Z19 DTH) engine that has covered more than150,000 miles: “This engine is an interference type, so the likelihood of engine damage if the timing belt fails, is very high. The Zafira is a very popular car in the UK and Ireland, so with Fig. 2 Fig. 3 Fig. 4