FENDT 938 Vario MT - Replace the Main Filter and the Inlet Filter of the Supply Module

• You do not use AGCO Parts
•
The maintenance is incorrect or not done on time.
CAUTION: Make sure that you use Diesel Exhaust Fluid (DEF) (DIN 70070 or ISO 22241
cer
tified) in the Selective Catalytic Reduction (SCR) system.
The engine is not in compliance with emission regulations.
Do not mix the Diesel Exhaust Fluid (DEF) with other materials, this can cause damage to
the Selective Catalytic Reduction (SCR) system.
CAUTION: Decreased engine power because of a fault in the Selective Catalytic Reduction
(SCR) syst
em.
When the Diesel Exhaust Fluid (DEF) quality sensor identifies a problem with the Diesel
Exhaust Fluid (DEF) quality, it send a CAN signal to the ECU. The ECU decreases the
engine power output.
Make sure that Diesel Exhaust Fluid (DEF) (DIN 70070 or ISO 22241 certified) is used in the
Selective Catalytic Reduction (SCR) system.
CAUTION: The diesel fuel can cause damage to the gaskets of the Selective Catalytic
Reduct
ion (SCR) system.
The engine is not in compliance with emission regulations. The Selective Catalytic
Reduction (SCR) system does not operate correctly.
Do not put diesel fuel in Diesel Exhaust Fluid (DEF) tank.
CAUTION: Decreased performance.
Engine is not in compl
iance with emission regulations.
Make sure that the Diesel Exhaust Fluid (DEF) in storage is at a temperature of less than
30°C, and away from sunlight.
Related Links
Selective Catalytic Reduction (SCR) system technical data page 2-172
SCR system tools page 2-216
Solve the DEF pressure build-up failure page 2-332
Supply module lifting capacity test page 2-334
Solve the failure when the SM lifting capacity test is not OK page 2-335
Solving the failure when the SM lifting capacity test is OK page 2-337
Make the dosing rate test page 2-340
Checking the quality of DEF page 2-342
1.6.8.2 Replace the main filter and the inlet filter of the supply module
The main filter is on the supply module below the
filter cover. No special tools are necessary for the
replacement of the main filter and the inlet filter.
The inlet filter is in the Diesel Exhaust Fluid (DEF)
connector. The inlet filter is only available with the
Diesel Exhaust Fluid (DEF) connector.
(1) Main filter
(2) Diesel Exhaust Fluid (DEF) connector with
inlet filter
1
2
GUID-E2167563-DC93-4D28-83D9-85DCC78F6516-low.svg [Low]
Fig. 30
GUID-6FC704BC-951D-4137-AE15-48E2E7998003 [V5]
1. General
Rubber Track Tractor 1
-33
79037495A