TVET FIRST
Motor Trade Theory N2
This document includes important informa on about the revised curriculum for Motor Trade Theory N2, scheduled for implementa on in 2021. Contact jayshil.bhula@macmillaneduca on.co.za to request a sample copy of the TVET First approved textbook or visit our website at www.macmillaneduca on.co.za. For best results, use TVET First Motor Trade Theory N2! Major changes to the 2021 curriculum: Much of the material has been reorganised and updated to introduce new automo ve technologies. New content includes: • Engine measurement • Gearboxes: an introduc on to six-speed gearboxes • The sec on on clutches has moved to N2 from N1 • Brakes: ABS and EBS opera ng systems • Fuel-injec on systems • Electronic igni on • Auxiliary electrical systems Descrip on of curriculum changes per module
New content
Module 1: Engine measurement
Engine block:
• This is a new sec on. Students will learn where measurements are taken on the engine block and cylinder head.
• Understand where to measure the cylinder bore for size taper and ovality.
• Weigh ng is 5% of the curriculum.
• Explain how all the measurements are taken on the piston. • Explain how all the measurements are taken on the cranksha both inside and outside the engine block. • Explain how the measurements are taken on the connec ng rod. Cylinder head: • Explain how the measurements are taken for thickness and warpage. • Explain how all the measurements are taken for wear on the valve guide and valve stem. • Explain how to check the sea ng of the valves. • Explain how to measure valve spring height and spring tension.
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