REMOVE FRONT BUMPER COVER
REMOVE UREA TANK PROTECTOR
Remove the 3 bolts and urea tank protector from the body.
DISCONNECT WIRE HARNESS
Disconnect the connector from the urea tube with heater assembly.
Pull the tabs of the connector as shown in the illustration and disconnect the connector from the urea pump
Disconnect the 2 connectors from the front side wiring sub-assembly.
Detach the 2 clamps and disconnect the front side wiring sub-assembly from the urea tank sub-assembly.
DISCONNECT UREA TANK FILLER PIPE ASSEMBLY
Disconnect the urea tank breather tube of the urea tank filler pipe assembly from the urea tank sub-assembly.
Note
Check for dirt or mud on the urea tank sub-assembly and around the urea tank breather tube connector before disconnection. Clean if necessary.
| *a | Retainer |
|
Pull |
|
Pull Out |
Detach the claw of the retainer of the urea tank breather tube connector, pull up the retainer and disconnect the urea tank breather tube connector from the urea tank sub-assembly.
Note
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 tank breather tube connector.
Be sure to disconnect the urea tank breather tube connector by hand.
Check for foreign matter in the urea tank sub-assembly and around the urea tank breather tube connector. Clean if necessary. Foreign matter may damage the O-ring or cause leaks in the seal between the urea tank sub-assembly and urea tank breather tube connector.
Put the urea tank sub-assembly and urea tank breather tube connector ends in plastic bags to prevent damage and foreign matter contamination.
Disconnect the urea tank filler tube of the urea tank filler pipe assembly from the urea tank sub-assembly.
Note
Check for dirt or mud on the urea tank sub-assembly and around the urea tank filler tube connector before disconnection. Clean if necessary.
| *a | Retainer |
|
Pull |
|
Pull Out |
Detach the claw of the retainer of the urea tank filler tube connector, pull up the retainer and disconnect the urea tank filler tube connector from the urea tank sub-assembly.
Note
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 tank filler tube connector.
Be sure to disconnect the urea tank filler tube connector by hand.
Check for foreign matter in the urea tank sub-assembly and around the urea tank filler tube connector. Clean if necessary. Foreign matter may damage the O-ring or cause leaks in the seal between the urea tank sub-assembly and urea tank filler tube connector.
Put the tank sub-assembly and urea tank filler tube connector ends in plastic bags to prevent damage and foreign matter contamination.
DISCONNECT UREA TUBE WITH HEATER ASSEMBLY
Note
Check for dirt or mud on the urea pump and around the urea tube connector before disconnection. Clean if necessary.
Detach the clamp and disconnect the urea tube with the heater assembly from the urea tank sub-assembly.
Remove the urea tube with heater assembly from the urea pump.
Detach the lock claw by lifting up the cover.
|
Lift Up |
Pinch the retainer of the urea tube connector, and then pull the urea tube connector off of the urea tube with heater assembly.
|
Pinch |
|
Pull |
Note
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 pump 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 pump and urea tube connector.
Put the urea pump and urea tube connector ends in plastic bags to prevent damage and foreign matter contamination.
REMOVE UREA TANK SUB-ASSEMBLY
Loosen the clip and remove the 3 bolts and urea tank sub-assembly from the body.
Remove the clip from the urea tank sub-assembly.
REMOVE UREA PUMP
| *a | Co-rotation Prevention Check Mark |
Apply a co-rotation prevention check mark to the urea pump from the urea tank sub-assembly.
Note
The urea tank sub-assembly cutout is attached to protrusion on the urea tube with heater assembly.
If the urea pump and urea tank sub-assembly are not firmly attached and the urea pump gauge retainer is rotated, the urea pump will co-rotate and result in urea pump being damaged.
Make sure to apply co-rotation prevention check mark to prevent the urea pump from co-rotating.
| *1 | Urea Pump gauge Retainer |
| *a | SST (Claw Set) |
| *b | Rib |
| *c | Cutout |
| *d | SST (Claw Set) Incorrect Installation Point (Rotational Start Point Mark of Urea Pump Gauge Retainer) |
Set 4 SSTs (claw sets) to the urea pump gauge retainer and temporarily install.
Note
Align the cutout of SST (claw set) to the rib of the urea pump gauge retainer.
Do not place SST on the rotational start paint mark of the urea pump gauge retainer, otherwise SST (claw set) cannot be set correctly.
| *1 | Urea Pump Gauge Retainer |
| *a | SST (Claw Set) |
| *b | Press |
|
Pinch |
|
SST (Bolt) |
While firmly pressing the claw of SST into rib of the urea pump gauge retainer, tighten the bolt.
| *a | SST (Plate) |
| *b | SST (Claw Set) |
|
SST (Bolt) |
Temporarily install SST (plate) to SST (claw set) with 4 SSTs (bolts).
| *a | Center of Urea Pump Gauge Retainer |
| *b | SST (Plate) |
Adjust the position of SST (plate) so that the setting hole of SST (handle) aligns with the center of the urea pump gauge retainer.
| *1 | Urea Pump Gauge Retainer |
| *a | SST (Plate) |
| *b | SST (Claw Set) |
| *c | SST (Bolt) |
| *d | Rib |
|
Press |
While firmly pressing SST (claw set) into rib of the urea pump gauge retainer, tighten SST (bolt).
| *a | SST (Plate) |
| *b | SST (Handle) |
| *c | SST (Claw Set) |
|
Loosen |
Install SST (handle) to SST (plate).
Slowly loosen the urea pump gauge retainer by approximately 90°.
Note
Do not use any tools other than SST, such as screwdriver, etc.
Do not excessive force when pressing down on SST, as urea tube with heater assembly will place excessive force on the urea pump gauge retainer and be difficult to remove, and parts may be damaged.
Do not use an impact wrench or turn SST handle with excessive force, as parts may be damaged.
While on person slowly loosens the urea pump gauge retainer, have another person press down the rising urea pump, securely attach the protrusion of the urea pump to the groove of the urea tank sub-assembly, and then remove the urea pump gauge retainer while making sure that the urea pump is properly aligned.
Note
If the urea pump gauge retainer is turned while the urea pump and urea tank sub-assembly are not correctly aligned, urea pump will move with the urea pump gauge retainer, and the urea pump and urea tank sub-assembly may both be damaged.
Do not rotate the urea pump gauge retainer when the co-rotation prevention check mark is out of place.
| *a | SST (Plate) | *b | SST (Handle) |
| *c | Person in Charge of Loosening | *d | Person in Charge of Supporting |
| *e | Co-rotation Prevention Check Mark | - | - |
Remove the urea pump from the urea tank sub-assembly.
Remove the gasket from the urea tank sub-assembly.