Engine Coolant Level - Check - MTU 12 V 4000 G23 Technical Documentation Manual

Task Description
6.14.4 Engine coolant level – Check
Preconditions
• Engine is stopped and starting disabled.
• MTU Fluids and Lubricants Specification (A001061/..) is available.
Coolant is hot and under pressure.
Risk of injury and scalding!
WARNING
Coolant-level check at filler neck:
1. Turn breather valve of filler neck on coolant expansion tank counterclockwise to first stop and allow pressure
to escape.
2. Continue to turn breather valve counterclockwise and remove.
3. Check coolant level (coolant must be visible at the lower edge of the cast-in eye).
Coolant-level check at external cooler:
1. Check coolant level (coolant must be visible at
marking plate).
2. If required, top up with treated coolant
(→ Page 140).
3. Check and clean breather valve.
4. Set breather valve onto filler neck and close it.
Coolant-level check by means of level sensor:
1. Switch on engine control system and check readings on the display.
2. If required, top up with treated coolant (→ Page 140).
M015710/01E 07-02
• Let the engine cool down.
• Wear protective clothing, gloves, and goggles / safety mask.
143
© MTU