Engine Coolant Pump – Relief Bore Check - MTU 20 V 4000 M93 x Operating Instructions Manual

7.14.6 Engine coolant pump – Relief bore check
DANGER
Rotating and moving engine parts.
Risk of crushing, danger of parts of the body being caught or pulled in!
• Only run the engine at low power. Keep away from the engine's danger zone.
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 58) and disable en-
gine start, observe general safety instruc-
tions 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.
MS150048/04E 2013-07 | Task Description | 163