Technical data

6–52 Cooling System, LT Circuit

6.16.4 Charge-air coolant level check

Preconditions

• Engine is stopped and starting disabled.

• MTU Fluids and Lubricants Specification (A001061/..) is available.

WARNING

Coolant is hot and under pressure.

Risk of injury and scalding!

• Let the engine cool down.

• Wear protective clothing, gloves, and goggles / safety mask.

Charge-air 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

marking plate).

4. If required, top up with treated coolant

(→ Page 6 – 48).

5. Check

proper condition of breather valve, clean

sealing faces if required.

6. Fit breather valve onto filler neck and close it.

Charge-air coolant level check by means of level sensor:

1. Switch engine control system ON and check display (coolant level is automatically monitored by the engine

control system).

2. If required, top up with treated coolant (→ Page 6 – 48).