Cooling systems 31 www.aftermarketonline.net JUNE 2025 Nowadays, timing belt replacement is a far more complicated job than it used to be, requiring specific processes including following vehicle manufacturer (VM) torque figures. In addition, as the timing control system is increasingly used to drive the water pump, technicians are faced with the challenge of dealing with the cooling system as well. Dayco UK national technical manager Glen Goldstone said the firm is ready to support technicians with the OE parts they need and offer best practice advice. “On removal of the existing pump, all the old coolant should be drained and the system flushed to remove any debris before being replaced with new VM part number coolant, mixed with deionised water (not ordinary tap water), in the correct ratio. “In common with timing belt replacement, installation of the new water pump must be in line with the VM’s stated process.” Goldstone said the mating surface of the engine must be clean and free from debris before installation. Before the pump is installed, it must be primed with coolant, but the pulley should not be rotated beforehand. Once primed, the pump should be installed in the correct position, avoiding misalignment. When in place, but before being tightened, the free movement of the pulley should be checked. “In these applications, once the system has been sealed and the new coolant added, the vehicle should be connected to a suitable diagnostic tool and the system can then be purged electronically. “In some cases, more modern water pump construction consists of coolant blocking shields designed to allow the engine to heat up quickly after start up. This type of pump will utilise internal moving components, cavities and solenoid valves that can become contaminated and blocked if unclean coolant is re-used or if the system is not purged correctly.” Dayco offers its OE products as complete kits. Visit www.dayco.com for more information. Clever product options ᎮW IRU FRRO UXQQLQJ %HVW SUDFWLFH IRU WLPLQJ EHOW GULYHQ ZDWHU SXPSV Management of the temperatures within the engine and gearbox are key to performance and efficiency, which is why AVA has backed up its range of expansion tanks, fans and fan clutches, intercoolers, oil coolers, radiators and thermostats. This ‘Clever Fit’ concept is designed to provide workshops with the replacement parts and convenience they need. Alongside its optimised range, AVA recognises that workshops need solutions that provide them with not only quality and reliability, but also convenience. This is what led to the development of Clever Fit, to combine performance, ease of installation and maximum efficiency. All products within the concept come with everything that’s required for quick, hassle-free installation — including items such as O-rings, clips and washers — all neatly packaged in the box. Unfortunately, oil coolers are often overlooked when considering efficient thermal management. However, keeping the engine’s oil at a stable, defined temperature is as important as managing the temperature of the engine and gearbox, because consistent internal lubrication is critical. AVA currently offers 290 oil coolers covering more than 1,500 OE part numbers, many of which are available as complete assemblies, including both housing and oil filters. This plug-and-play solution simplifies installation, making it easier, faster, and less risky. Tips and advice O Low-quality or contaminated oil can clog the thin channels in the oil cooler, limiting its flow and cooling performance. Ensure the oil and oil filter are changed in accordance with the vehicle manufacturer’s service schedule; O As it lubricates, cleans and conditions the seals, the oil is crucial for the correct operation of the gearbox, which is why a leaking or non-performing oil cooler is one of the most common causes of automatic gearbox failure; O In leakage situations, the lack of oil will cause the engine to overheat and shut down; O Exposure to high stress, such as high temperatures and high mileage, can significantly shorten the oil cooler’s lifespan. The AVA range is optimised to provide the coverage that’s needed, but over fewer part numbers, with its engine cooling products consisting of more than 4,000 parts — covering almost 20,000 OE references. Visit https://ava-cooling.com/en/ company.html for full range details.
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