DISCONNECT UREA TUBE WITH HEATER ASSEMBLY
Check for dirt or mud on the urea injector set and around the urea tube connector before disconnection. Clean if necessary.
In order to prevent the urea injector set interior portion from drying, perform installation and removal work as quickly as possible.
Disconnect the urea tube with heater assembly from the urea injector set.
Detach the lock claw by lifting up the cover.
Pinch the retainer of the urea tube connector, and then pull the urea tube connector off of the urea tube with heater assembly.
If there is any solidified urea solution (white solids) on the connection area, clean the solids off with a damp cloth, etc., before disconnecting the urea tube connector.
Be sure to disconnect the urea tube connector by hand.
Check for foreign matter in the urea injector set and around the urea tube connector. Clean if necessary. Foreign matter may damage the O-ring or cause leaks in the seal between the urea injector set and urea tube connector.
Put the urea injector set and urea tube connector ends in plastic bags to prevent damage and foreign matter contamination.
REMOVE UREA INJECTOR SET
Disconnect the connector from the urea injector set.
Remove the 2 nuts and urea injector set and gasket from the front exhaust pipe assembly.