TSB210203

10/4/21, 10:18 AM
Shortened Suction Side Fuel Filter Life: Fault Code 559
Technical Service Bulletin
Technical Service Bulletin: TSB210203
Released Date: 27-Sep-2021
Shortened Suction Side Fuel Filter Life: Fault Code 559
Shortened Suction Side Fuel Filter Life: Fault Code
559
Warranty Statement
The information in this document has no effect on present warranty coverage or repair practices,
nor does it authorize TRP or Campaign actions.
Contents
Product Affected
L9 CM2450 L126B
Issue
Symptom:
Repeated plugging of suction side fuel filter prior to required maintenance interval. See
corresponding Operation and Maintenance Manual, Bulletin 5613076. Reference Procedure
359-008 in Section 3 for fuel filter maintenance interval.
Root Cause:
Suction side fuel filter plugging
Verification
Confirm suction side fuel filter is plugged. See corresponding Service Manual. Reference
Procedure 006-020 in Section 6 to measure suction side fuel filter restriction.
Confirm suction side fuel filter is a 10-micron fuel filter. Reference Table 1 below for
corresponding fuel filter part number.
Confirm pressure side fuel filter restriction is within specification. Perform pressure side fuel
filter restriction test. See corresponding Service Manual. Reference Procedure 005-236 in
Section 5 to measure pressure side fuel filter restriction.
Resolution
New suction side fuel filter options for units repeatedly experiencing short suction side fuel filter life
are available. New filter options offer adequate protection to the fuel system while extending
suction side fuel filter life. See Table 1 below.
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10/4/21, 10:18 AM
Shortened Suction Side Fuel Filter Life: Fault Code 559
Service Instructions
Verify correct pressure side fuel filter is installed. Pressure side fuel filter, Part Number FF6304101
NN, must be used when utilizing a new suction side fuel filter. Install the appropriate 25 micron
Suction Side (Stage 1) fuel filter for the existing filter housing using Table 1, below.
Service Parts Availability
Table 1, Service Parts
Suction Side Filter
Housing
Existing Stage 1
Fuel Filter Part
Number (10um)
New Stage 1 Part
Number (25um)
Fleetguard®
Fleetguard®
Fleetguard®
5528103
5682805
Davco
Davco
Davco
DP245
FS20081
DP243 with FS19728
Racor
Racor
Racor
445R
R45T
R45P
460R
R60T
R60P
490R
R90T
R90P
4125R
R125T
R125P
4120R
R120T
R120P
FS90394
FS90395
Pressure Side Part
Number (no change)
FF6304101 NN
FS90396
FF6304101 NN
FF6304101 NN
Note : If a part number is not referenced in Table 1 above, contact local Cummins Inc.
representative for assistance in obtaining correct suction side fuel filter part number.
Document History
Date
2021-9-17
Details
Module Created
Last Modified: 27-Sep-2021
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