Engine Coolant Pump - Relief Bore Check - MTU 20V4000M73 series Operating Instructions Manual

7.16.6 Engine coolant pump – Relief bore check
DANGER
Components are moving or rotating.
Risk of crushing, danger of parts of the body being caught or pulled in!
• Operate the engine at low load only. Keep clear of the danger zone of the engine.
WARNING
High level of engine noise when the engine is running.
Risk of damage to hearing!
• Wear ear protectors.
Engine coolant pump, relief bore
check
1. Check relief bore for oil and coolant dis-
charge.
2. Stop engine (→ Page 72) and disable engine
start, observe general safety instructions on
maintenance and repair.
3. Clean the relief bore with a wire if it is dirty.
• Permissible 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.
206 | Coolant System, General, High-Temperature Circuit | MS150046/03E 2018-08