SERVICE PROCEDURE
18517
DECEMBER 2018
SUBJECT:

SAFETY RECALL
Brake Air Line Tubing on certain IC BUS® CE
Series school bus models built 25 January 2018
thru 10 October 2018 with feature code 04AZS (4channel Antilock Brakes [ABS], 4-channel
Electronic Stability, and Automatic Traction
Control)

DEFECT DESCRIPTION
The brake air line tube from the relay valve port to the left brake modulator valve
may be improperly routed, resulting in a kinked air line. A kinked air line may
result in the vehicle pulling to the right during braking or improper operating of
the modulating valve during an ABS event. A vehicle pulling to the right during
braking or improper ABS modulation could make it more difficult for the driver to
maintain their line, which could result in loss of control or a vehicle crash.

MODELS INVOLVED
This safety recall involves certain IC Bus® CE Series school bus models built 25
January 2018 thru 10 October 2018 with feature code 04AZS (4-channel ABS, 4channel Electronic Stability, and Automatic Traction Control).

ELIGIBILITY
This procedure applies ONLY to vehicles marked in the International® Service
Portal℠ with Safety Recall 18517. Also complete any other open campaigns
listed on the Service Portal at this time.

PARTS INFORMATION
Part Number
417200C3
475411C1
2041341C1
306132C1

Part Description
Tube; Nylon Bulk, 1/2 OD
Extension Clip; Z Style
Saddle Clamp Cable Lock MT 1/4
Strap; Cable Lock

Quantity
9 ft
1
1
2

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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SERVICE PROCEDURE
WARNING! To prevent personal injury, and / or death, or property damage,
park the vehicle on hard flat surface, turn the engine off, set the parking
brake, and place chocks in front of, and behind, the wheels to prevent the
vehicle from moving in either direction.
WARNING! To prevent personal injury, and / or death, or property damage,
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 personal injury, and / or death, or property damage,
allow engine / vehicle components to cool before servicing.
1. Park vehicle on flat surface.
2. Shift transmission to Park or Neutral and set parking brake.
3. Place chocks in front of and behind the wheels.

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 1. Incorrect Routing
1. Synflex tube

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 2. Correct Routing
1. Z style extension clip
2. Battery cable ladder bracket

4. Locate and visually inspect Synflex tube. The tube is on the frame rail,
near the driver seat area.
a. If Synflex tube is routed as shown in Figure 2, proceed to Step 27.
b. If Synflex tube is routed as shown in Figure 1, but is free of kinks or
damage, proceed to Step 5.
c. If Synflex tube is routed as shown in Figure 1 and tube is kinked or
damaged, proceed to Step 11.

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 3. Existing Bracket
1.
2.
3.
4.

Bolt, washer, and nut
L bracket
Tie strap
Saddle

5. Cut tie strap (Item 3) securing Synflex tube to saddle.
6. Remove bolt (Item 1) securing L bracket (Item 2) to frame. Retain bolt,
washer, nut, and saddle portion of bracket (Item 4).

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 4. New Bracket
1. Bolt, washer, and nut (reuse)
2. Extension clip; Z style (475411C1)
3. Saddle and mounting hardware (reuse)

7. Transfer saddle (Item 3) to Z style extension clip (Item 2) and install at 45degree angle. Reuse hardware nut and washer from original bracket.
Tighten bolt to finger tight.
8. Using bolt washer and nut (Item 1) removed in Step 6, install new bracket
at frame rail hole used by old bracket. Torque bolt to 80 - 100 lb-ft (108 135 N•m).
9. Remove lower end of Synflex tube from the ATR-6 relay valve port and
cut tie straps securing Synflex tube to other air lines.
10. Proceed to Step 20.

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 5. Existing Bracket
1.
2.
3.
4.

Bolt, washer, and nut
L bracket
Tie strap
Saddle

11. Cut tie strap (Item 3) securing Synflex tube to saddle.
12. Remove bolt (Item 1) securing L bracket (Item 2) to frame. Retain bolt,
washer, nut, and saddle portion of bracket (Item 4).

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 6. New Bracket
1. Bolt, washer, and nut (reuse)
2. Extension clip; Z style (475411C1)
3. Saddle and mounting hardware (reuse)

13. Transfer saddle (Item 3) to Z style extension clip (Item 2) and install at
45-degree angle. Reuse hardware nut and washer from original bracket.
Tighten bolt to finger tight.
14. Using bolt washer and nut (Item 1) removed in Step 11, install new
bracket at frame rail hole used by old bracket. Torque bolt to 80 - 100 lbft (108 - 135 N•m).
15. Disconnect end of Synflex tube from left front brake modulator.
16. Disconnect other end of Synflex tube from ATR-6 valve.
17. Cut any remaining tie straps securing Synflex tube to vehicle and remove
Synflex tube.
18. Cut a 9-ft (2.7 m) length of nylon tubing.
19. Connect one end of tubing to left front brake modulation valve.

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 7. New Tube Routing
1. Z style extension clip
2. Battery cable ladder bracket

20. Route Synflex tube to Z style extension clip (Item 1) and secure with tie
strap.
21. Install new saddle clamp on battery cable ladder bracket (Item 2).
22. Route Synflex tube to battery cable ladder bracket and secure with tie
strap.
23. Torque saddle bolt to 90 - 110 lb-in (10 - 12 N•m).

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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Figure 8. ATR-6 Traction Relay Valve Port
1. Synflex tube
2. Valve port

NOTE: It is important to route the airline as shown in Figure 7 and
Figure 8. Do not reroute the airline to reduce its length. Shortening the
airline will cause the vehicle to pull in one direction when the breaks
are applied.
24. Route Synflex tube (Item 1) to ATR-6 traction relay valve port (Item 2).
Trim excess hose. Install onto push to connect fitting.
25. Replace any tie straps removed in Step 9 or Step 17.
26. Start engine.
27. Make sure there is at least 90 psi of air in the system, apply the air
brakes, and check for leaks.
28. Remove wheel chocks.

END OF SERVICE PROCEDURE

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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LABOR INFORMATION
Operation Number
A40-18517-1
A40-18517-2
A40-18517-3

Description
Inspect Only, No Repairs Necessary
Inspect and Reroute Brake Air Line Only
Inspect, Replace, and Reroute Air Line

Time
0.3 hrs
0.5 hrs
0.7 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 18517.
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 18517
© 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.

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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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.
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.

VEHICLE RECALL 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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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 18517
© 2018 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners.

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