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O n its launch in 2013, the 1.4-litre TSI (CHPA) powered mark III Octavia, was the largest petrol engine in the Octavia range, a unit Auto Express magazine claimed at the time was “arguably the best engine in the line-up, as it combines impressive pace with good economy.” The powerplant is used across several VAG models, so is likely to be familiar to workshops throughout the country. As replacing the timing belt requires the removal of the auxiliary belt, Dayco recommends that in addition to replacing all the primary system’s components, technicians check, and if necessary, change the auxiliary components at the same time. This step by step technical guide will help technicians through the process, avoiding complications and ensuring a first-rate outcome. As with all primary drive system jobs, always check the timing marks before removing the timing belt and ensure the work is undertaken when the engine is cold, so ideally, the vehicle will not have been run for at least four hours. Start Start by removing the plastic guard from underneath the engine and then, after taking off the front offside wheel, the lower part of the plastic cowling from inside the wheel arch. This will reveal the auxiliary belt system and by relaxing the tension on the belt with a spanner on the tensioner, the belt can be removed. Before disconnecting the tensioner, lock it by inserting a pin as shown (see Fig.1). Remove the cap in the engine block used to close the hole in which the crankshaft timing tool will be inserted 26 AFTERMARKET SEPTEMBER 2020 TECHNCIAL www.aftermarketonline.net ‘Just in time’ car journeys are increasing, Dayco provides a rundown on a timing belt installation using Dayco Kit KTB819 DAYCO: ŠKODA OCTAVIA TIMING BELT KIT INSTALLATION Fig.1 Fig.2