AUDI A2 - Engine and Gearbox Self-study programme 247

The 02T gearbox is an extremely lightweight two-shaft gearbox. The parts of the housing are made of magnesium. It is designed to transmit torque values of up to 200 Nm. Both gearboxes are actuated via gear selector cables and gate selector cables

Design and function of the 1.4 l - 16 V engine The cylinder block is made of die-cast aluminium. The required stiffness is achieved by pronounced ribbing, and is further reinforced by the crankshaft bearing blocks.

The cylinder liners are made of cast iron. They are cast into the crankcase and can be reworked. The webs with the cast cylinder liners have a thickness of 5.5 mm.

G12 is the only approved coolant additive. As well as preventing frost damage on the aluminium housing, it prevents the formation of lime deposits and damage due to corrosion in the coolant channels.

The crankshaft must not be loosened or removed. If the bearing cap bolts are released then the internal structure of the bearing blocks in the cylinder blocks slackens and causes them to warp. The bearing clearance is then reduced.

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