7.15.6 HT coolant pump — Relief bore check

DANGER Unguarded rotating and moving engine components. Risk of serious injury – danger to life! • Take special care when working on a running engine.

WARNING Engine noise above 85 dB (A). Risk of damage to hearing! • Wear ear protectors.

HT coolant pump — Relief bore check

1. Check relief bore for oil and coolant dis‐charge. 2. Stop engine (→ Operating instructions elec‐tronic system) and disable engine start. 3. Clean the relief bore with a wire if it is dirty. • Permissible engine coolant discharge: up to 10 drops per hour; • Permissible oil discharge: up to 5 drops per hour. 4. If discharge exceeds the specified limits, contact Service.

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