8.13.2 Supply unit – 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.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Supply unit
(→ Spare Parts Catalog)
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.
NOTICE
Contamination of components.
Damage to component!
• Observe manufacturer's instructions.
• Check components for special cleanliness.
Removing supply unit
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.
Provide suitable containers to collect urea
solution.
3.
Disconnect HDSC connector of DCM box (3)
and HDSC connector of dosing unit (4).
4.
Disconnect connector at urea solution outlet
(1) (pressure line).
5.
Disconnect urea solution inlet (2) (intake
line).
6.
Seal urea solution connections with the asso-
ciated transport closures.
MS150123/01E 2017-05
| Exhaust Gas Aftertreatment | 177
TIM-ID: 0000071313 - 002
