A New Diesel Exhaust Fluid Filter is Now Available for C7.1 Machine Engines {108H} Caterpillar


A New Diesel Exhaust Fluid Filter is Now Available for C7.1 Machine Engines {108H}

Usage:

AP-1000F AC4
Asphalt Paver
AP1000F (S/N: AC41-107,109-111)
AP1055F (S/N: TJ51-115,117-121,220-220)
Track Loader
963K (S/N: LBL1-102)
Track-Type Tractor
D6N XL (S/N: GB61-1,200-207)
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)
950M (S/N: EMB1-256,260-262; FTR1-177,433-433)
962M (S/N: EJB1-173; JYD1-1; F2T1-129)
Wheel Skidder
525D (S/N: GKP1-145,150-150,152-157,166-166,324-324)
535D (S/N: MTP1-122,127-128,143-143,145-145,148-148,153-153)
545D (S/N: KGP1-109,111-113,117-117)
555D (S/N: PGY1-104)
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 Diesel Exhaust Fluid (DEF) filter has been introduced. The new DEF filter helps to eliminate debris from entering the DEF system and reduces the occurrences of the E931 (2) and E1370 (2) diagnostic trouble codes being displayed.

Table 1 contains the parts needed to complete the installation of the new DEF filter.

Note: Only one DEF filter group is required per engine. Use Table 2 to determine which filter is the appropriate filter for each DEF header.

Table 1
Part Number  Part Description  Qty 
378-3187  Diesel Exhaust Fluid Filter Gp 
423-3251  Connector 
391-5262  Gasket 
425-0385  Filter As 
452-6055  Filter Base As 
453-1604(1)  Diesel Exhaust Fluid Filter Gp 
453-1605(1)  Diesel Exhaust Fluid Filter Gp 
453-1606(1)  Diesel Exhaust Fluid Filter Gp 
(1) Use Table 2 to choose the correct part that corresponds to the DEF heater

Table 2
DEF Heater Part Number  Required DEF Filter 
434-3241  453-1604 
434-3242  453-1605 
434-3243  453-1606 

The effective serial numbers for this change are related to the Pump Electronic Tank Unit (PETU) serial numbers and not the machine serial numbers. Table 3 contains the effective serial numbers for the PETU tank. Refer to illustration 1 and illustration 2 for examples of where to locate the PETU serial number.



Illustration 1g06018843
Typical example
(1) The location of the PETU serial plate.


Illustration 2g03418749
Typical example

Table 3
PETU Effective Serial Numbers 
S/N:PET007086T-UP 

Refer to Special Instruction, M0066142, A New Diesel Exhaust Fluid Filter is Now Available for C7.1 Engines for installation instructions.

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