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DDifficulty 2/5

On a bus with hydraulically operated clutch controls, how should you identify that circuit’s fluid filling point?

Correct answer

Consult the model’s manual and identify the clutch circuit reservoir and cap.

Consult the model’s manual and identify the reservoir and cap belonging to the clutch circuit. Their location cannot be deduced merely from the clutch controls being hydraulic: it depends on vehicle design. Do not confuse this filling point with the air filter, engine oil or another circuit. Use only the fluid and procedure specified by the manufacturer.

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All options

  • Consult the model’s manual and identify the clutch circuit reservoir and cap.

  • Use the engine-oil cap to top up the clutch circuit.

  • Assume that it is always on the air-filter bracket.

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