NHTSA ID Number: 11014996
Manufacturer Communication Number: TSB190114
TSB/Document Date: 2025-03-05
Summary
This Technical Service Bulletin describes the verification and resolution to the customer repeatedly experiencing plugged suction side fuel filter prior to required maintenance interval. New filter options offer adequate protection to the fuel system while extending suction side fuel filter life. This is an update to a previously submitted communication.
Technical Service Bulletin
Technical Service Bulletin: TSB190114
Released Date: 17-Feb-2025
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
X12 CM2350 X119B
X12 CM2450 X137B
X15
CM2350 X114B
X15 CM2350 X116B
X15 CM2450 X124B
X15 CM2450 X134B
X15 CM2450 X142B
Issue
Symptom:
Customer repeatedly experiences plugged suction side fuel filter prior to required
maintenance interval. See corresponding Operation and Maintenance Manual,
Bulletin 5411187. 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 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.
Service Instructions
Verify correct pressure side fuel filter is installed. Pressure side fuel filter, Part Number FF5971NN,
with new suction side fuel filter, Part Number FS20337, is recommended, but pressure side fuel
filter, Part Number FF5825NN or FF5971NN, must be used when utilizing a new suction side fuel
filter.
Service Parts Availability
Table 1, Service Parts
Existing Suction Side
Fuel Filter (10
Micron) Part Number
New Suction Side
Fuel Filter Part
Number
Pressure Side Fuel
Filter Part Number
PACCAR K37-1029
PACCAR K37-1012
FF5825NN
FLEETGUARD®®
FS20172
FLEETGUARD®
FS20173
FF5825NN
Extended PACCAR
Housing
PACCAR K37-1021
PACCAR K37-1022
FF5825NN
Davco 382 / FH 230
FLEETGUARD®
FS19727
FLEETGUARD®
FS19729, FS197281
FF5825NN
Davco 382 / FH 230
– Plus Size
FLEETGUARD®
FS19764
FLEETGUARD®
FS19905G,
FS197651
FF5825NN
Davco 483
FLEETGUARD®
FS20139
FLEETGUARD®
FS20140
FF5825NN
Davco 485
FLEETGUARD®
FS20083/FS20385
FLEETGUARD®
FS20337
FF5825NN
Davco 498
FLEETGUARD®
FS20083/FS20385
FLEETGUARD®
FS20337
FF5825NN
FLEETGUARD®
FS19551
FLEETGUARD®
FS19532
FF5825NN
MCI Coach CM2350
FLEETGUARD®
FS2716
Suction Side Filter
Housing
Standard PACCAR
Housing
FS19905G, FS197651
FF5825NN
Table 1, Service Parts
Suction Side Filter
Housing
Existing Suction Side
Fuel Filter (10
Micron) Part Number
New Suction Side
Fuel Filter Part
Number
MCI Coach CM2450
FLEETGUARD®
FS19764
1FS19728
FS19905G, FS197651
Pressure Side Fuel
Filter Part Number
FF2338NN
and FS19765 are preferred where available.
If a part number is not referenced in Table 1, contact local Cummins Inc. representative for
assistance in obtaining correct suction side fuel filter part number.
Document History
Date
Details
2019-6-27
Module Created
2019-8-8
Added statement about pessure side fuel filter, Part Number
FF5825NN. Added Extended PACCAR Housing information to Table 1.
2021-6-28
Updated Product Affected Section.
2022-11-11
Added X12 CM2350 X119B, X12 CM2450 X137B, and updated Table 1.
2024-10-28
Added X15 CM2450 X142B to Product Affected list.
2025-2-6
Updated Service Instruction section and Table 1.
Last Modified: 17-Feb-2025
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TSB/Document ID: TSB190114
Replacement Service Bulletin Number:
MFR Communication Date: 2025-02-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
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