ACCOUNT TEAM COVERAGE
Please Deliver To: Service Managers and Warranty Decision Makers
FROM: Cummins Global Warranty Administration Communications
Subject: ISX15 CM2350 Fuel Pump Tappet - EDS Guided ATC for Ryder
Number: Atc1943
Expires:
Attention:

Date: 03-Apr-2018

20-Sep-2018 (U.S./Canada)
20-Sep-2018 (International)
U.S / Canadian Dealers
U.S / Canadian Distr./Branches and Div. Offices (Automotive)

This is to revise and replace ATC 1943-A, dated 17-Nov-2017. This revision is to:
1 Title change with supporting narrative, and
2 updated the ESN list.
If additional information is required, please contact your Cummins Warranty Operations Group Leader.
DESCRIPTION:
This ATC is being issued to upgrade certain ISX15 CM2350 High Pressure Fuel Pump Tappets. This field action
provides authorization for certified repair locations to replace the brass roller pin tappets in the high pressure fuel
pump with new diamond-like coated roller pin tappets.
NOTE: Necessary parts must be on hand before beginning this field action.
NOTE: This field action provides for retroactive coverage for repairs, including customer billable repairs, completed by
Cummins authorized repair locations prior to the release date of this field action.
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 an OPEN status for this field action on QuickServe® Online.
After verifying that the engine meets the above requirements, perform the following actions:
NOTE: Data is needed from each ESN that is either campaigned or repaired in the field. Enter "data request" in to the
search field in EDS or Guidanz and follow the solution to provide the data necessary.
•

1 Remove and inspect the fuel pump tappets. Please refer to Fuel Pump Head Procedure 005-227 in Service
Manual 4310641.
-

If no damage is found:
•

2 Complete installation of new fuel pump tappets. Please refer to Fuel Pump Head Procedure 005-227 in
Service Manual 4310641.

NOTE: Warning! The tappet guide pins may rotate during the removal of the tappet. The tappet cannot be correctly
installed if the tappet guide pin is out of position. Please refer to Attachment B for the proper orientation of the tappet
guide pin.
NOTE: Use care when handling the roller tappet as the diamond-like coated tappet roller pin can fall out, resulting in
damage to either the tappet roller or the pin. If the tappet roller pin does fall out during inspection, but the tappet roller
and roller pin are not damaged, the roller pin can be reinserted.

-

•

3 Mark the fuel pump head forging number with white paint, as illustrated in Attachment C, to signify
completion of this field action.

•

4 File one claim for only the applicable parts and labor listed in this field action.

If the tappets or fuel pump cam are found damaged:
•

2 Refer to TSB140019 for repair direction.

NOTE: Repairs done in accordance with TSB140019 cannot be filed to this field action and must be filed to applicable
Coverage. Per the TSB, there is a cost effective option to use a fuel pump short block service kit.
•

3 Mark the fuel pump head forging number with white paint, as illustrated in Attachment C, to signify
completion of this field action.

•

4 File one claim for only the applicable parts and labor listed in this field action. If further repairs are
necessary due to finding damaged components those repairs must be filed to applicable coverage.

MATERIAL DISPOSITION:
Materials removed as a result of this field action must be scrapped.
REIMBURSEMENTS:
Parts:
NOTE: In accordance with fuel system clean care, sealing washer Part Number 3963988 MUST be replaced
regardless of repair path. Please refer to TSB140159 for information regarding effects of not following clean care
practices and failure to replace sealing washer Part Number 3963988.
The following parts are covered under this field action:
Part Number
287251300
396398800
396399000
435913400
498828000

Quantity
1
2
2
2
1

Description
GSK,PMP (OPTIONAL)
WSH,SNG
WSH,SNG (OPTIONAL)
TPT,PMP (OPTIONAL)
GSK,PMP (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
05-176
Fuel Pump Head - Remove and Install
17-138
Power Steering Pump - Move for Access
17-162
Power Steering Reservoir - Move for Access
99-902
FUEL PUMP TAPPET REMOVE AND REPLACE (QTY 2)

Time

Travel:
Travel is covered under this field action. Towing is not covered under this field action.
NOTE: Please schedule the Technician's time to maximize the number of units that can be repaired on a single visit.
When filing claims for multiple ESNs, where travel is required and authorized, travel can be filed to ONLY one (1) ESN.
Other Claimables:
Consumables are covered under this field action.
Claim Instructions:
For Cummins Dealers, claims for this Field Action 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: .................................................................................................................................................... WFHASW
Attachments
atc1943_esn-list-d.xls atc1943_tappet_guide_pin_warning-attach-b.pdfatc1943_fuel_pump_head_marking_attachc.pdf

Warning! Tappet Guide Pin May Rotate
The tappet guide pin is a floating pin and plug design, as shown in Figure 1 below. The floating
pin has a rectangular end that engages the groove on the tappet. Refer to Figures 2 and 3. The
pin can be rotated by hand. Be certain the pin engages the tappet properly before installing the
fuel pump head.

Figure 1: Tappet guide plug, floating pin, and the tappet roller with guide slot.

(a)

(b)

Figure 2: Bottom view using cut-away cam housing. (a) Tappet guide pin correctly oriented
within the bore. (b) Tappet guide pin incorrectly oriented within the bore.

(a)

(b)

Figure 3: Top view looking down into bore. (a) Tappet guide pin correctly oriented within the
bore. (b) Tappet guide pin incorrectly oriented within the bore.

Mark the Fuel Pump Head forging number with a white paint marker after
completing the repair.