POWER TRAIN GRT9165 SERVICE MANUAL
7-16
Published 10-01-2020 Control # 699-00
AFTERTREATMENT DIESEL EXHAUST
FLUID (DEF)
DEF Tank
This engine uses a Selective Catalytic Reduction (SCR)
system. SCR is a technology that uses a urea based DEF
and a catalytic converter to significantly reduce oxides of
nitrogen (NOx) emissions.
The DEF tank (1, Figure 7-15) incorporates a fluid level
sending unit and a heating element to keep the DEF from
freezing.
Removal
1. Tag and disconnect the electrical connector (2) on the
DEF tank (1).
2. Tag and disconnect the fluid lines (3, 6, 7, 8) on the tank.
3. Remove the hardware (4) holding the tank straps (5) in
place.
4. Remove the tank (1).
Installation
1. Place the DEF tank (1) onto the location on the frame.
2. Place the tank straps (5) around the tank and secure
with the hardware (4).
3. Connect the fluid lines (3, 6, 7, 8) as tagged during
removal.
4. Connect the electrical connector (2) as tagged during
removal.
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FIGURE 7-15
7
1 DEF Tank
2 Electrical Connector
3 Coolant Inlet
4 Tank Strap Mounting Hardware
4
2
3
5
5 Tank Straps
6 Coolant Outlet
7 Suction Port
8 Return Port
6
8
1
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