NHTSA ID Number: 10172437
Manufacturer Communication Number: ATC2278A
TSB/Document Date: 2020-03-16
Summary
This Account Team Coverage field action authorizes certified repair locations to change the fuel heater wiring harness polarity by switching wiring terminal locations within the fuel heater connector, to install a new fuel heater, and to replace or install a new fuse in the fuel heater circuit on certain B6.7 CM2350 B121B units. This field action is a commercial (non-safety) action to properly re-enable the fuel heater functionality that was removed to correct a recall condition as described in the recall report for NHTSA recall 19E-020. This is an update to a previously submitted communication.
ACCOUNT TEAM COVERAGE
Please Deliver To: Service Managers and Warranty Decision Makers
FROM: Cummins Global Warranty Administration Communications
Subject: B6.7 CM2350 B121B Fuel Heater ATC for National Express
Number: Atc2278
Expires:
Date: 11-Feb-2020
20-Jun-2021 (U.S./Canada)
20-Jun-2021 (International
)
Attention:
This is to revise and replace ATC2278, dated 17-Dec-2019. This revision is to:
1 Update the narrative, and
2 update the SRT list.
If additional information is required, please contact your Cummins Warranty Operations Group Leader.
DESCRIPTION:
Certain B6.7 CM2350 B121B engines were shipped without a fuel heater; a plug was installed in place of a fuel heater.
This Campaign authorizes certified repair locations to install a fuel heater in place of the plug, change the fuel heater
wiring harness polarity by switching wiring terminal locations within the fuel heater connector, and to replace or install
a new fuse in the fuel heater circuit.
ACTION:
In order to qualify for repair under this field action, an engine:
1 will be covered Regardless of coverage status, and
2 must show as OPEN on QuickServe® Online for this field action.
NOTE: The ESN list is attached for reference.
After verifying that the engine meets the above requirements, perform the following actions:
1 Complete all of the repair instructions included within Attachment B.
2 Verify the current status of the fuel heater supply circuit wire locations within the fuel heater connector. If there
is no white dot on the fuel heater connector, and/or the polarity has NOT been reversed, please refer to
Attachment B for further instruction on the verification and/or correction of the fuel heater supply circuit. If there
is a white dot and the polarity has already been reversed, continue with the remaining repair instructions.
3 Remove the fuel heater or fuel heater plug currently installed in the fuel filter module. Install the new fuel
heater included within the fuel heater kit necessary for the appropriate application the engine is installed.
Please refer to Attachment B for further instruction on fuel heater or plug removal and fuel heater installation.
4 Confirm the correct wiring harness polarity. Please refer to Attachment B for further instruction on verification
of the correct terminal locations within the connector that indicate a correctly wired fuel heater circuit.
5 Install the new fuse included in the fuel heater kit necessary for the appropriate application the engine is
installed. Please refer to Attachment B for further instruction on fuse location and installation within the
appropriate application.
6 Reconnect the engine fuel heater wiring harness connector to the fuel heater and mark the connector to
confirm that the fix has been completed. Please refer to Attachment B for further instructions on how to make
the proper indication on the connector that the fix has been completed.
MATERIAL DISPOSITION:
Where applicable, items removed should be returned to ReCon for core credit. Unless otherwise indicated, items with
no core liability can be scrapped.
REIMBURSEMENTS:
Parts:
NOTE: Refer to Attachment B for application specific information on the proper fuel heater kit part numbers to order.
The following parts are covered under this field action:
Part Number
557928500
Quantity
1
Description
KIT, FUEL HEATER (OPTIONAL)
NOTE: SRTs to gain access that are required to complete the repair, that are sufficiently explained in the claim
narrative, may also be claimed on this action.
Labor using applicable Access Code and Time:
SRT Code
Description
00-90X
Administrative time
99-008
FUSE INSTALLATION, FUEL HEATER REMOVE AND INSTALL,
POLARITY REVERSAL AND MANUAL UPDATES (QTY 1 0.3HR )
Time
Travel:
Travel is covered under this field action. Towing is covered under this field action.
Other Claimables:
Consumables are covered under this field action.
NOTE: Please consolidate all consumables and claim them as one item in Other Claimables titled "CAMPAIGN
SUPPLIES". Additional parts, such as o-rings, gaskets and fasteners, that are required to complete the repair, but not
listed, may be claimed if sufficiently explained in the claim narrative. Summarize these items and file as "CAMPAIGN
SUPPLIES".
Claim Instructions:
For Cummins Dealers, claims for this Field Campaign must be filed via RAPIDSERVE™ Web (rsw.cummins.com).
For information regarding RAPIDSERVE™ Web, please reference the "Warranty" tab in QuickServe® Online. If there
are additional questions, please contact your local Cummins Distributor.
Account Code: .............................................................................................................................................................. 27
Pay Code: .................................................................................................................................................. Distributor = X
Pay Code: ........................................................................................................................................................ Dealer = D
Pay Code: ................................................................................................................................................ International = I
Failure Code: ..................................................................................................................................................... WFEHTC
Attachments
atc2278_esn-list.xlsxatc2278_national_express_atc_service_instructions_attach-b.pdf
ACCOUNT TEAM COVERAGE
Please Deliver To: Service Managers and Warranty Decision Makers
FROM: Cummins Global Warranty Administration Communications
Subject: B6.7 CM2350 B121B Fuel Heater ATC for National Express
Number: Atc2278
Expires:
Date: 17-Dec-2019
20-Jun-2021 (U.S./Canada)
20-Jun-2021 (International)
Attention:
If additional information is required, please contact your Cummins Warranty Operations Group Leader.
DESCRIPTION:
This field action authorizes certified repair locations to change the fuel heater wiring harness polarity by switching
wiring terminal locations within the fuel heater connector, to install a new fuel heater, and to replace or install a new
fuse in the fuel heater circuit on certain B6.7 CM2350 B121B units.
ACTION:
In order to qualify for repair under this field action, an engine:
1 will be covered Regardless of coverage status, and
2 must show as OPEN on QuickServe® Online for this field action.
NOTE: The ESN list is attached for reference.
After verifying that the engine meets the above requirements, perform the following actions:
1 Complete all of the repair instructions included within Attachment B.
2 Verify the current status of the fuel heater supply circuit wire locations within the fuel heater connector. If there
is a white dot on the fuel heater connector and/or the wiring polarity has already been reversed, no further
action needs to be taken. Please refer to Attachment B for further instruction on verification of the correct
terminal locations within the connector that indicate a correctly wired fuel heater circuit.
3 Remove the fuel heater or fuel heater plug currently installed in the fuel filter module. Install the new fuel
heater included within the fuel heater kit necessary for the appropriate application the engine is installed.
Please refer to Attachment B for further instruction on fuel heater or plug removal and fuel heater installation.
4 Confirm the correct wiring harness polarity. Please refer to Attachment B for further instruction on verification
of the correct terminal locations within the connector that indicate a correctly wired fuel heater circuit.
5 Install the new fuse included in the fuel heater kit necessary for the appropriate application the engine is
installed. Please refer to Attachment B for further instruction on fuse location and installation within the
appropriate application.
6 Reconnect the engine fuel heater wiring harness connector to the fuel heater and mark the connector to
confirm that the fix has been completed. Please refer to Attachment B for further instructions on how to make
the proper indication on the connector that the fix has been completed.
MATERIAL DISPOSITION:
Where applicable, items removed should be returned to ReCon for core credit. Unless otherwise indicated, items with
no core liability can be scrapped.
REIMBURSEMENTS:
Parts:
NOTE: Refer to Attachment B for application specific information on the proper fuel heater kit part numbers to order.
The following parts are covered under this field action:
Part Number
557928500
Quantity
1
Description
KIT, FUEL HEATER (OPTIONAL)
NOTE: SRTs to gain access that are required to complete the repair, that are sufficiently explained in the claim
narrative, may also be claimed on this action.
Labor using applicable Access Code and Time:
SRT Code
Description
00-400
Steam Clean - Single Component Repair
00-90X
Administrative time
19-0PB
Wire Connector - Replace, Each Connector (EPA 2017)
99-902
FUSE INSTALLATION, FUEL HEATER REMOVE AND INSTALL
(QTY 1 )
Time
Travel:
Travel is covered under this field action. Towing is covered under this field action.
Other Claimables:
Consumables are covered under this field action.
NOTE: Please consolidate all consumables and claim them as one item in Other Claimables titled "CAMPAIGN
SUPPLIES". Additional parts, such as o-rings, gaskets and fasteners, that are required to complete the repair, but not
listed, may be claimed if sufficiently explained in the claim narrative. Summarize these items and file as "CAMPAIGN
SUPPLIES".
Claim Instructions:
For Cummins Dealers, claims for this Field Campaign must be filed via RAPIDSERVE™ Web (rsw.cummins.com).
For information regarding RAPIDSERVE™ Web, please reference the "Warranty" tab in QuickServe® Online. If there
are additional questions, please contact your local Cummins Distributor.
Account Code: .............................................................................................................................................................. 27
Pay Code: .................................................................................................................................................. Distributor = X
Pay Code: ........................................................................................................................................................ Dealer = D
Pay Code: ................................................................................................................................................ International = I
Failure Code: ..................................................................................................................................................... WFEHTC
Attachments
atc2278_esn-list.xlsxatc2278_national_express_atc_service_instructions_attach-b.pdf
Fuel Heater Campaign
Date: 12/10/2019
Root Cause:
•
Under certain conditions, internal electrical arcing within the fuel heater, due to metallic debris in the fuel that may
accumulate in the heater over time, may create sufficient heat inside the fuel heater to cause plastic in the fuel
heater to melt.
Verification/Confirmation
•
•
•
•
Verify engine has Cummins supplied priming pump fuel filter head installed.
o Option FS90301
o Option FS90453
Locate Stage 1 fuel filter head on engine. The engine fuel heater and harness connection is located on the
top right side of the fuel filter head. The unit may have either a heater or plug installed.
Ensure the fuel heater connecter and fuel heater have no white paint marks. See Figure 1 below.
Make sure the OEM harness wires are installed with the white wire on the right (terminal 2) and the red
wire on the left (terminal 1) using the orientation shown in Figure 1 below.
1
2
3
Fix not complete
Fix complete
Figure 1
1. No white paint mark on the connector
2. White wire is on the right (terminal 2)
3. Red wire is on the left (terminal 1)
Resolution
Install parts in Kit and swap the fuel heater connector wires if required. See Service Instructions below.
Service Instructions
Use correct Kit by referring to Attachment A.
Install Fuel Heater provided in Kit
1. Unlock connector by moving red tab to the right and disconnect from engine fuel heater if plug has not
already been installed.
2. Remove and discard two allen screws securing engine fuel heater, or plug, to the fuel filter head with a
5mm hex driver. See Figure 2 below.
3. Pull the engine fuel heater, or plug, straight out of the fuel filter head and discard. Capture any fuel that
may leak from the fuel filter, or plug. See Figure 3 below.
Figure 2
Figure 3
4. Clean face of engine fuel heater port with a lint free cloth and inspect for any sharp edges and/or
contaminants. Clean if needed.
5. Lubricate the O-ring on the new fuel heater supplied in kit with clean diesel fuel and carefully install into
the engine fuel heater port, making sure to properly align before installing.
6. Use the two allen screws supplied to secure the fuel heater to the fuel filter head and tighten to 11 N-m
[6.6 ft-lb].
Swap the heater wiring polarity if required.
1. Disconnect vehicle battery.
2. Pull plastic guide piece from connector with needle nose plyers. See Figure 4 below.
Figure 4
3. Use PN4918921 Terminal Removal Tool to remove wires from connector. See Figure 5 below.
Figure 5
4. Swap the wire positions so that the white wire is in the number 1 terminal and the red wire is in the
number 2 terminal. Please use orientation shown in the figures below.
Figure 6: Number 1 Terminal Marking
5.
6.
7.
8.
9.
Figure 7: Number 2 Terminal Marking
Figure 8, Not OK
Figure 9, OK
Insert the wire back into the back of the connector in the same orientation that it was removed
When correctly installed, you will hear the wire click and lock into the connector
Lightly tug on the wires to ensure they are secure
Ensure connector seal on the back of the connector is in place after wires are re-installed
Once both wires are connected back in, re-install plastic guide piece
Install Fuse
Application
Corresponding Kit Part Number
Configuration
Navistar® CE Bus and 1300
See Attachment A for needed kit
Configuration 1
Table 1
Configuration 1. Navistar® CE Bus and 1300 Fuse Instructions
1. Disconnect vehicle battery.
2. Locate fuel heater fuse location on dash panel. See Figure 10 below.
3. Remove fuse cap and install 30amp Maxi Fuse provided in Kit Part Number 5579285. If a fuse is
already installed in the cavity replace it with the fuse provided in the kit.
4. Reinstall fuse cap.
Figure 10
Reconnect engine fuel heater and mark that the fix has been completed
1. After the fuse or fuses have been installed, connect the fuel heater OEM harness branch to the engine
fuel heater.
2. Zip tie the excess harness to the heater as seen below in figure 11. Make sure there is no tension on the
wires going into the connector.
Figure 11
3. Mark that the fix has been completed by placing a white paint mark on the connector of the engine fuel
heater. See Figure 12 below.
Figure 12
4. For CE Bus applications please place the fuse sticker provided in the kit in the appropriate spot to update
the unit for future service
Service Parts Availability
There are 3 different kits to accommodate the 3-different fuse types
Service parts are available. See Table below for part numbers.
Part Description
New Part Number
5579285
Kit 1 for Navistar® CE Bus and 1300
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TSB/Document ID: ATC2278A
Replacement Service Bulletin Number:
MFR Communication Date: 2020-02-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM:WIRING
MFR Component System:
MFR Component Subsystem:
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