Case CX490D Operator's Manual page 134

Follow the steps below to add DEF/AdBlue®:
1. Turn the starter key to OFF position. Wait 3 min for SCR system to completely suck DEF/AdBlue® back into the
tank.
2. Turn the key cylinder (2) with the starter key to unlock the DEF/AdBlue® tank cover (1). Turn the cover access
handle (3) and draw open the cover (1) frontward.
3. Wipe the inlet on the DEF/AdBlue® tank (4) clean of dirt, mud, and foreign objects.
NOTICE: some white powder deposits may form when DEF/AdBlue® adheres and dries in places such as the
supply inlet. Wipe off these deposits to prevent them from entering the DEF/AdBlue® tank.
4. Turn the cap (6) counterclockwise and open the filler neck.
NOTICE: DEF/AdBlue® may emit an odor when the tank cap is opened. Do not attempt to smell inside the tank
from the supply inlet.
5. Refill up to the F (upper limit) mark (7) on the level gauge (5).
NOTICE: never refill DEF/AdBlue® over the F (upper limit) mark on the level gauge. Adequate air volume must
be present in the top of the tank for proper functionality of the SCR system. Moreover, DEF/AdBlue® may leaks
from the breather hose during use, and sensors may be damaged when it becomes frozen.
NOTICE: if DEF/AdBlue® spills while adding, wipe off the spillage with a cloth and then rinse the area with fresh
water. DEF/AdBlue® will cause corrosion on painted and unpainted metallic surfaces, and may distort some
plastic and rubber components.
6. Put the cap (6) on the filler neck. Turn the cap clockwise to close the filler neck.
1. DEF/AdBlue® tank cover
2. Key cylinder
3. Cover access handle
4. DEF/AdBlue® tank
3 - CONTROLS AND INSTRUMENTS
SMIL19CEX0571EB
5. Level gauge
6. Tank cap
7. Upper limit level of DEF/AdBlue® to be refilled.
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