MTU 12V4000C Series Operating Instructions Manual page 132

8.16.5 Charge-air 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.
Charge-air coolant pump – Re-
lief bore check
1. Check relief bore for oil and coolant dis-
charge.
2. Stop engine (→ Page 49) and disable engine
start, observe general safety instructions for
maintenance and repair.
3. Clean the relief bore with a wire if it is conta-
minated.
• 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.
132 | Low-Temperature Circuit | MS150049/04E 2017-04