Urea Solution Lines - Replacement - MTU 16V4000M73 Operating Instructions Manual

8.13.4 Urea solution lines – Replacement
Preconditions
☑ Engine was stopped with key switch and it was verified that circulation cooling is completed.
☑ SCR system switched off after completion of aftercooling phase.
☑ Shutoff devices for urea solution lines must be provided on-board.
WARNING
Ammonia is created in case of fire or overheating.
There is a danger of poisoning if urea solution (e.g. AdBlue, DEF) is swallowed.
In case of contact with urea solution (e.g. AdBlue, DEF), there is a danger of skin irritation and eye in-
jury.
Risk of injury and poisoning!
• Avoid contact with eyes or skin.
• Do not inhale vapors or smoke.
• When handling urea solution (e.g. AdBlue, DEF), do not eat, drink or smoke.
• Wear protective clothing, protective gloves and goggles/safety mask.
WARNING
Urea solution (e.g. AdBlue, DEF) is hot.
Risk of injury and scalding!
• Allow product to cool down.
• Slowly open line connections and closures.
• When opening, ensure that the separation points are covered with cloths.
• Wear protective clothing, protective gloves, and safety goggles / safety mask.
WARNING
Slipping and falling caused by spilled liquids.
Risk of serious injury!
• Immediately clean up spilled liquids with suitable cleaning agents or as defined by the manufacturer's
specifications.
NOTICE
Contamination of components.
Damage to component!
• Observe manufacturer's instructions.
• Check components for special cleanliness.
Replacing urea solution lines
Note: Shutoff devices for urea solution lines must
be provided on-board.
1. Shut off supply and return line from pre-feed
module to tank.
2. Take photos or use the Spare Parts Catalog
to identify and arrange the urea solution
lines.
3. Provide suitable containers to collect escap-
ing urea solution.
Note: The Tee fittings (3) cannot be disconnected.
4. Disconnect ring line (1) at disconnectable Tee
folding sleeves (2).
5. Remove urea solution lines.
6. Install urea solution lines.
7. Open supply and return line from pre-feed
module to tank before starting engine.
MS150123/01E 2017-05 | Exhaust Gas Aftertreatment | 183