SERVICE PROCEDURE
G-13502R2
MARCH 2013
SUBJECT:

SAFETY RECALL
Injection Pressure Regulator (IPR) wire connector
on certain CE and RE school bus models built
7 December 2010 through 26 June 2012 with
certain MaxxForce® DT, 9, and 10 engines.

REASON FOR THIS REVISION
The tools required for this procedure have been revised to remove an
unnecessary tool listed. The tool currently listed in the Tool Information table
also performs the function of the removed tool.
The service procedure has been modified. Carefully read Steps 5 through 8 and
follow the instructions provided in this revision.
The standard repair times (SRTs) listed for the labor operations have changed.
Please review these updated SRTs before submitting a claim.

DEFECT DESCRIPTION
The Injection Pressure Regulator (IPR) harness wire may possibly break due to
vibrational damage at the crimp/wire interface. A break in the wire to the IPR
could possibly cause an unexpected engine shutdown without warning.

MODELS INVOLVED
This Safety Recall involves certain CE and RE school bus models built
7 December 2010 through 26 June 2012 with certain MaxxForce® DT, 9, and 10
engines with feature codes 12NUK, 12NUL, 12NUM, 12NUN, 12NUP, and
12NUS.

PARTS INFORMATION
Part Number
1889325C94

Part Description
Kit, IPR Valve

VEHICLE RECALL G –13502R2

Quantity
1

1

1889325C94 Kit Contents:
Part Number
Part Description
3035970C91
IPR Valve Pigtail Assy
7093281C91
2-Pin Connector Service Kit
4328084R1
Instruction Sheet

Quantity
1
1
1

TOOL INFORMATION
Tool Number
12-800-01

Part Description
IPR Valve Socket Tool

Quantity
1

SERVICE PROCEDURE
WARNING! PARK VEHICLE ON HARD FLAT SURFACE, TURN THE ENGINE
OFF, SET THE PARKING BRAKE AND BLOCK THE WHEELS TO PREVENT
THE VEHICLE FROM MOVING IN BOTH DIRECTIONS. FAILURE TO DO SO
MAY RESULT IN PROPERTY DAMAGE, PERSONAL INJURY AND/OR
DEATH.
WARNING! ALWAYS WEAR SAFE EYE PROTECTION WHEN PERFORMING
VEHICLE MAINTENANCE. FAILURE TO DO SO MAY RESULT IN SERIOUS
EYE INJURY.
WARNING! ALLOW COMPONENTS IN ENGINE COMPARTMENT TO COOL
BEFORE SERVICING ENGINE OR VEHICLE. FAILURE TO DO SO MAY
RESULT IN PROPERTY DAMAGE, PERSONAL INJURY AND/OR DEATH.
WARNING! KEEP FLAMES OR SPARKS AWAY FROM VEHICLE AND DO
NOT SMOKE WHILE SERVICING THE VEHICLE’S BATTERIES. BATTERIES
EXPEL EXPLOSIVE GASES. FAILURE TO DO SO MAY RESULT IN
PROPERTY DAMAGE, PERSONAL INJURY, AND/OR DEATH.
WARNING!
REMOVE THE GROUND CABLE FROM THE NEGATIVE
TERMINAL OF THE BATTERY BOX BEFORE DISCONNECTING ANY
ELECTRICAL COMPONENTS. ALWAYS CONNECT THE GROUND CABLE
LAST. FAILURE TO DO SO MAY RESULT IN PROPERTY DAMAGE,
PERSONAL INJURY, AND/OR DEATH.

VEHICLE RECALL G –13502R2

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Note: Refer to Special Access Instructions for RE Bus.
1. Park vehicle on flat surface with wheels straight ahead.
2. Shift transmission to park or neutral and set parking brakes.
3. Install wheel chocks.
4. Unlatch and open hood.
5. Disconnect IPR connector from engine harness.
6. Refer to Instruction Sheet 4328084R1, included in Kit 1889325C94, for
steps to remove old IPR and to install updated IPR.
7. Refer to Instruction Sheet 4328070R1, included in Kit 7093281C91, for
additional steps for splicing.
8. Reconnect IPR connector to engine harness.
9. Run engine to verify proper operation, no fault codes present, and check
for leaks.
10. Close and latch hood.
11. Remove wheel chocks.
Note: Refer to Supplementary Installation Instructions for RE Bus.

END OF SERVICE PROCEDURE

VEHICLE RECALL G –13502R2

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LABOR INFORMATION
Operation Number

Description

Time

A40-13502-1

Install IPR with Pigtail Jumper (CE Bus)

0.6 hrs

A40-13502-2

Install IPR with Pigtail Jumper (RE Bus)

1.8 hrs

CAMPAIGN IDENTIFICATION LABEL
Each vehicle corrected in accordance with this
campaign must be marked with a CTS-1075
Campaign Identification Label.
Complete the label and attach on a clean surface
next to the vehicle identification number (VIN) plate.

ADMINSTRATIVE/DEALER RESPONSIBILITIES
WARRANTY CLAIMS
Warranty claim expense is to be charged to Warranty. Claims are to be
submitted in the normal manner, making reference to Safety Recall 13502.
It is important that the coding be completed properly to assist in processing the
warranty claim. Complete instructions will be found in the Warranty Policy
Manual, Section 7.1.8.
As with all claim submission, items acquired locally must be submitted in the
“Other Charges” tab. The cost of any bulk items (bag of cable tie straps, roll of
wire, barrel of oil, tube of silicone, etc.) should be prorated for the cost of the
individual pieces/amount used during each repair.

VEHICLE RECALL G –13502R2

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UNITED STATES AND POSSESSIONS
The National Traffic and Motor Vehicle Safety Act, as amended, provides that
each vehicle that is subject to a vehicle recall campaign must be adequately
repaired within a reasonable time after the owner has tendered it for repair. A
failure to adequately repair within 60 days after a tender of a vehicle is prima
facie evidence of failure to repair within a reasonable time. If the condition is not
adequately repaired within 60 days, the owner may be entitled to replacement
with an identical or reasonable equivalent vehicle at no charge, or to a refund of
the purchase price less a reasonable allowance for depreciation.
Dealers must correct all vehicles subject to this campaign at no charge to the
owner, regardless of mileage, age of vehicle, or ownership, from this time
forward.
Dealers should proceed immediately to make necessary correction to units in
inventory. All inventory vehicles subject to this recall campaign must be
corrected prior to sale, transfer or delivery. If vehicles have been sold or
transferred and you are in receipt of Customer Notification Letters and
Authorization for Recall Service cards for those vehicles, the transfer location or
customer must be notified immediately from your dealer location.
Dealers must make every effort to promptly schedule an appointment with each
owner to repair his or her vehicle as soon as possible. However, consistent with
the customer notification, dealers are expected to complete the repairs on the
mutually agreed upon service date.
Dealers involved in the recall process will be furnished a listing of owner names
and addresses to enable them to follow up with owners and have the vehicles
corrected. Use of this listing must be limited to this campaign because the list
may contain information obtained from state motor vehicle registration records
and the use of such motor vehicle registration data for purposes other than this
campaign is a violation of law in several states.

VEHICLE RECALL G –13502R2

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CANADA
Dealers must correct all vehicles subject to this campaign at no charge to the
owner, regardless of mileage, age of vehicle, or ownership, from this time
forward.
Dealers should proceed immediately to make necessary correction to units in
inventory. All inventory vehicles subject to this recall campaign must be
corrected prior to sale, transfer or delivery. If vehicles have been sold or
transferred and you are in receipt of Customer Notification Letters and
Authorization for Recall Service cards for those vehicles, the transfer location or
customer must be notified immediately from your dealer location.
Dealers must make every effort to promptly schedule an appointment with each
owner to repair his or her vehicle as soon as possible. However, consistent with
the customer notification, dealers are expected to complete the repairs on the
mutually agreed upon service date.
Dealers involved in the recall process will be furnished a listing of owner names
and addresses to enable them to follow up with owners and have the vehicles
corrected. Use of this listing must be limited to this campaign because the list
may contain information obtained from state motor vehicle registration records
and the use of such motor vehicle registration data for purposes other than this
campaign is a violation of law in several states.
EXPORT
Export Distributors should proceed immediately to make necessary correction to
units in inventory. All inventory vehicles subject to this recall campaign must be
corrected prior to sale, transfer or delivery. If vehicles have been sold or
transferred and you are in receipt of Customer Notification Letters and
Authorization for Recall Service cards for those vehicles, the transfer location or
customer must be notified immediately from your distributor location.
Export Distributors are to submit warranty claims in the usual manner making
reference to this recall number.
Export Distributors are expected to provide full cooperation and follow-up with
respect to this important subject matter. If you have any questions or need
further assistance, please contact the Regional Service Manager at your regional
office.

NAVISTAR, INC

VEHICLE RECALL G –13502R2

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