A New Filter is Available for the DEF Tank Adaptor for C7.1 Machine Engines {108H} Caterpillar


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A New Filter is Available for the DEF Tank Adaptor for C7.1 Machine Engines {108H} [M0066790]
AIR INLET AND EXHAUST SYSTEM
AFTERTREATMENT GP
A New Filter is Available for the DEF Tank Adaptor for C7.1 Machine Engines {108H}
Asphalt Paver
AP1000F (S/N: AC41-106,109-111)
AP1055F (S/N: TJ51-115,117-118,121-121,220-220)
Motor Grader
120M Series 3 (S/N: N9H1-1)
Track-Type Tractor
D6N XL (S/N: GB6200-208)
Wheel Loader
926M (S/N: LTE1-104,151-151,275-275,304-304,407-407)
930M (S/N: KTG1-134)
938M (S/N: J3R1-146,541-541,677-677)
Wheel Skidder
525D (S/N: GKP1-145,150-150,153-157,166-166,324-324)
535D (S/N: MTP1-1,102-121,127-127,143-143,145-145,148-148,153-153)
545D (S/N: KGP101-109,112-113)
555D (S/N: PGY102-104)
Wheeled Excavator
M318F (S/N: F8B1-295,534-534,536-536,571-571,575-575,578-578,585-585,594-594,599-599)
M320F (S/N: F2W1-172,320-321,324-324,328-328)
MH3022 (S/N: FM21-277)

There have been some isolated instances of issues with debris blocking up the pickup pipe for the manifold (DEF Heater). This has resulted in a lack of injection of Diesel Exhaust Fluid (DEF). The following diagnostic trouble codes may be displayed in the electronic service tool:

  • E931 (2) Low Aftertreatment #1 SCR Dosing Reagent Absolute Pressure: Low - moderate severity (2)

  • E1370 (2) Aftertreatment Diesel Exhaust Fluid Dosing Unit Loss of Prime

A new filter has been introduced for the Diesel Exhaust Fluid (DEF) tank adaptor. The new filter in the DEF tank adaptor helps to eliminate debris from entering the DEF system. The new filter reduces the occurrences of the E931 (2) and E1370 (2) diagnostic trouble codes being displayed.

Refer to table 1 to select the correct DEF tank adaptor that is applicable to the relevant machine serial number prefix.

Table 1
Serial Number Prefix  Required DEF Tank Adaptor 
(S/N: F8B)  449-9106 
(S/N: GB6)  449-9106 
(S/N: F2W)  449-9106 
(S/N: FM2)  449-9106 
(S/N: N9H)  449-9106 
(S/N: J3R)  449-9108 
(S/N: GKP)  449-9108 
(S/N: MTP)  449-9108 
(S/N: TJ5)  449-9108 
(S/N: AC4)  449-9108 
(S/N: KGP)  449-9108 
(S/N: LTE)  449-9108 
(S/N: KTG)  449-9108 
(S/N: PGY)  449-9108 

Refer to Special Instruction, M0066152, A New Filter is Available for the DEF Tank Adaptor for C7.1 Engines for the installation instructions.

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