SERVICE PROCEDURE
18504
June, 2018
SUBJECT:

SAFETY RECALL
Brake Air Line Routing on certain International®
HX® Series trucks built 08 December 2015 thru 10
February 2018 with feature code 04091 (dual air
brake system) and 04AZY (Antilock Brake System
[ABS] with 6 channel Electronic Stability
Protection [ESP])

DEFECT DESCRIPTION
The roll stability valve air supply line may be incorrectly routed. This condition
does not affect normal brake operation. However, during a stability control
oversteer event and with slippery road conditions, the parking brakes may be
modulated unintentionally. Modulation of the parking brake during a stability
control oversteer event could lead to loss of control or a vehicle crash.

MODELS INVOLVED
This Safety Recall involves certain International® HX® Series trucks built 08
December 2015 thru 10 February 2018 with feature code 04091 (dual air brake
system) and 04AZY (Antilock Brake System [ABS] with 6 channel Electronic
Stability Protection [ESP]).

ELIGIBILITY
This procedure applies ONLY to vehicles marked in the International® Service
Portal℠ with Safety Recall 18504. Also complete any other open campaigns
listed on the Service Portal at this time.

PARTS INFORMATION
Part Number
2017498C2
2017507C1
20990R1
2643441R2 or
Source Locally

Part Description
TEE 3/8 PTC x 1/4 MPT x 3/8 PTC
FITTING, HOSE COUPLING PTC 3/8” TUBE
FITTING, PLUG 3/8” NPT
HOSE, FLEX AIR NYLON, (3/8 OD-ORANGE)

Quantity
1
1
1
7-inches
(180 mm)

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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SERVICE PROCEDURE
WARNING! To prevent property damage, personal injury, and / or death,
park vehicle on hard flat surface, turn the engine off, set the parking brake
and install wheel chocks to prevent the vehicle from moving in either
direction.
WARNING! To prevent property damage, personal injury, and / or death, if
the vehicle must be raised, do not work under the vehicle supported only
by jacks. Jacks can slip or fall over.
WARNING! To prevent personal injury and / or death, always wear safe eye
protection when performing vehicle maintenance.
WARNING! To prevent property damage, personal injury, and /or death,
allow engine / vehicle components to cool before servicing.
WARNING! To prevent property damage, personal injury, and / or death,
keep flames or sparks away from vehicle and do not smoke while servicing
the vehicle’s batteries. Batteries expel explosive gases.

1. Park vehicle on flat surface.
2. Shift transmission to Park or Neutral and set parking brake.
3. Turn Ignition to Key OFF position.
4. Install wheel chocks.
5. Locate and gain access to Antilock Traction Relay (ATR-6) valve under
vehicle.

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 1. ATR-6 Valve
1.
2.
3.
4.

ATR-6 valve
Control port
45-degree fitting
3/8-inch ORANGE airline

6. Disconnect ORANGE 3/8-inch airline (Figure 1, Item 4) from 45-degree
fitting (Figure 1, Item 3) of ATR-6 control port (Figure 1, Item 2).
7. Remove and discard 45-degree fitting (Figure 1, Item 3) from ATR-6
control port (Figure 1, Item 2).

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 2. Tee-Fitting
1.
2.
3.
4.

ATR-6 valve
Control port
3/8-inch T-fitting
3/8-inch ORANGE airline

NOTE: Always assemble Dryseal American Standard Taper Pipe Thread
fittings into internal thread until hand tight and then an additional 1 1/2
to 2 full revolutions. Do not back off (loosen) fitting.
8. Install new 3/8-inch T-fitting (Figure 2, Item 3) into ATR-6 control port
(Figure 2, Item 2) and hand tighten nut.
9. Tighten fitting 1-1/2 to 2 full revolutions.
10. Install ORANGE 3/8-inch airline (Figure 2, Item 4) into 3/8-inch T-fitting
(Figure 2, Item 3).

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 3. ATR-6 Steer Axle Delivery
1.
2.
3.
4.

3/8-inch ORANGE airline
3/8-inch fitting
Steer axle delivery port
ATR-6 valve

11. Disconnect ORANGE 3/8-inch airline (Figure 3, Item 1) from 3/8-inch
fitting (Figure 3, Item 2) of ATR-6 steer axle delivery port (Figure 3, Item
3).
12. Remove and discard 3/8-inch fitting (Figure 3, Item 2) from ATR-6 steer
axle delivery port (Figure 3, Item 3).

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 4. ATR-6 Connections
1.
2.
3.
4.
5.
6.
7.

3/8-inch plug
ATR-6 steer axle delivery port
ATR-6 valve
3/8-inch T-fitting
7-inch (180 mm) length 3/8-inch ORANGE airline
3/8-inch coupler
Lower 3/8-inch ORANGE airline

NOTE: Always assemble Dryseal American Standard Taper Pipe Thread
fittings into internal thread until hand tight and then an additional 1 1/2
to 2 full revolutions. Do not back off (loosen) fitting.
13. Install 3/8-inch plug (Figure 4, Item 1) into ATR-6 steer axle delivery port
(Figure 4, Item 2) and tighten until plug is hand tight.
14. Tighten plug 1 1/2 to 2 full revolutions.
15. Install one end of 7-inch (180 mm) length 3/8-inch ORANGE airline
(Figure 4, Item 5) into 3/8-inch coupler (Figure 4, Item 6).
16. Install 3/8-inch coupler (Figure 4, Item 6) onto lower 3/8-inch ORANGE
airline (Figure 4, Item 7).

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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17. Install remaining end of 7-inch (180 mm) length 3/8-inch ORANGE airline
(Figure 4, Item 5) into 3/8-inch T-fitting (Figure 4, Item 4).
18. Verify no air leaks are present when pedal is depressed.
19. Remove wheel chocks.

END OF SERVICE PROCEDURE
LABOR INFORMATION
Operation Number
A40-18504-1

Description
Correct Airline Routing to ATR-6 Valve

Time
1.0 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.

ADMINISTRATIVE / 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 18504.
Section 7 of the Warranty Policy and Procedures Manual contains further
information related to the submission and processing of AFC / Recall claims.
As with all claim submissions, items acquired locally must be submitted in the
“Other Charges” tab. The cost of any bulk items (such as a bag of cable tie
straps, roll of wire, barrel of oil, or tube of silicone) should be prorated for the
cost of the individual pieces / amount used during each repair.

VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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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,
VEHICLE RECALL 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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and the use of such motor vehicle registration data for purposes other than this
campaign is a violation of law in several states.
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 18504
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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