Engine and transmission 31 www.aftermarketonline.net SEPTEMBER 2025 ZF Aftermarket hosted a specialist training session to Level 2 and Level 3 light vehicle repair students at Liverpool City College, offering a valuable deep-dive into the fundamentals of automatic transmission systems. Led by Stuart McLeod, ZF’s technical support and training lead, the session focused on L1 transmission training — guiding students through the core principles, components and servicing techniques involved in ZF automatic transmissions, a vital area of knowledge for technicians working on modern vehicles. “We went through the fundamental operation of a ZF automatic transmission, the basic types of transmission, how to identify them, and the internal design — including torque converters, oil pumps, wet clutches, and planetary gear sets,” McLeod said. “These are the real-world systems technicians are encountering every day in the workshop.” Students were introduced to the operation of torque converters as a fluid coupling between engine and gearbox, as well as the oil pump’s role in supplying pressure to key components in hydro-dynamic systems. McLeod also explained how clutches and brakes engage to control the rotation of planetary gear sets, which deliver the different drive ratios. A training highlight was a section on ZF’s latest generation transmissions, featuring an integrated transmission control unit and valve body, a complete unit known as the mechatronic. The importance of correct servicing procedures was also emphasised, outlining the critical role that manufacturer-approved transmission fluids play. There was also a session on hybrid electric transmissions. Next workshop generation learns core tech skills PIERBURG TURBOCHARGERS: INNOVATIVE TECHNOLOGY FOR MAXIMUM EFFICIENCY AND PERFORMANCE www.ms-motorservice.com
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