Hagie STS/DPS Series, Operator'S Manual

Page: 131 / 382

4-9
SECTION 4 –
ENGINE AND DRIVE SYSTEMS
DEF Quality Sensor
The DEF Quality Sensor (located inside
the tank) detects DEF tank level, as well as
quality and temperature of the DEF, which
are required for the Aftertreatment System to
function properly.
DEF Suction Strainer
The DEF Tank is equipped with a Suction
Strainer (located near bottom of tank). If
degraded system performance occurs,
remove drain plug (located at bottom of tank)
to drain sediment from tank. Remove and
clean Suction Strainer, ensuring the strainer
is reinstalled correctly when finished.
NOTE: Flush DEF Tank and components
with distilled water only to remove
any contamination. Refer to the
engine manufacturer’s operation
manual for further information.
Final Tier 4 Engine Indicator Light
The Final Tier 4 Engine Indicator Light is
located near the Battery Disconnect Switch
and will flash (after the ignition key is shut off)
until the DEF Recirculation Pump has
finished running.
Refer to “Battery Disconnect Switch”
provided in the Electrical Systems Section
elsewhere in this manual for further
information.
• DEF Tank
Drain Plug
• DEF Suction
Strainer
DEF Suction Strainer and Drain Plug
(Located near bottom of DEF Tank)
-Typical View
DO NOT TURN BATTERY DISCONNECT
SWITCH OFF WHEN FINAL TIER 4
INDICATOR LIGHT IS ILLUMINATED
Final Tier 4 Engine Indicator Light
(Located near the
Battery Disconnect Switch)
-Typical View