NHTSA ID Number: 11034400
Manufacturer Communication Number: 26901
TSB/Document Date: 2026-07-02
Summary
Certain 2025 thru 2027 IC Bus™ CE Series school buses and IC Bus™ Electric CE Series school buses entrance doors may fall out of adjustment over time and with use. A door that is not adjusted properly may result in an improperly closed door and trigger an open door warning light on the dashboard.
Electric motor connector (2)
Entrance door electric motor (2)
M6 x 20 hex bolt (6, 3 shown)
Mounting support plate
33. Disconnect two electric motor connectors (Figure 14, Item 1), removing and
discarding cable ties as necessary.
© 2026 International
Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
15
Figure 15. Entrance Door Collar
1. Set screw
2. Door collar
34. Remove and discard set screw (Figure 15, Item 1) located on door collar (Figure
15, Item 2). Repeat for both entrance doors.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
16
Figure 16. Electric Entrance Door Mounting Plate Bolts
1. M8 x 16 mounting plate bolt (3)
35. Remove three M8 x 16 mounting plate bolts (Figure 16, Item 1) from the
mounting support and remove the assembly.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
17
Figure 17. Entrance Door Lower Male Hinge
1. Lower male hinge
36. With entrance door in an open position, gently lift entrance door up to release
lower male hinge (Figure 17, Item 1).
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
18
Figure 18. Entrance Door Upper Female Hinge
1. Upper female hinge
37. Gently tilt and lower door out of frame to release the upper female hinge (Figure
18, Item 1).
38. Place door flat on a protected surface.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
19
Figure 19. Set Screw Location
1. Set screw hole
39. Drill a new hole where the set screw was (Figure 19, Item 1), ensuring it is
straight as possible. The new hole should have a 0.272 in diameter.
40. Tap the new hole with a 5/16 in-24 tap. Deburr and remove any metal shavings.
41. Apply Loctite 242, medium strength, BLUE liquid to the set screw threads, and
partially insert the new 5/16 in-24 set screws into the new threaded hole.
42. Repeat Steps 36–41 for the other door leaf.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
20
Figure 20. Entrance Door Upper Female Hinge
1. Upper female hinge
43. Gently tilt and raise door into frame, ensuring that upper female hinge (Figure 20,
Item 1) slides into place.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
21
Figure 21. Entrance Door Lower Male Hinge
1. Lower male hinge
44. With entrance door in an open position, gently lift entrance door up to insert lower
male hinge (Figure 21, Item 1).
45. Repeat Steps 43–44 for the other door leaf.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
22
Figure 22. Electric Entrance Door Mounting Plate Bolts
1. M8 x 16 mounting plate bolt (3)
46. With entrance door electric motors secured to mounting plate, place electric
motor assembly with mounting plate above door frame, ensuring that the door
pivots are seated within door collar.
47. Secure mounting plate above entrance door with three M8 x 16 bolts (Figure 22,
Item 1).
48. Tighten M8 x 16 bolts to 23–26 lb-ft (31–35 N·m).
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
23
Figure 23. Entrance Door Collar
1. Set screw
2. Door collar
49. Tighten set screw (Figure 23, Item 1) located on door collar (Figure 23, Item 2) to
200 lb-in (22.6 N·m). Repeat for both entrance doors.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
24
Figure 24. Entrance Door Electric Motor
1.
2.
3.
4.
Electric motor connector (2)
Entrance door electric motor (2)
M6 x 20 hex bolt (6, 3 shown)
Mounting support plate
50. Connect two electric motor connectors (Figure 24, Item 1) to entrance door
electric motors (Figure 24, Item 2), and install cable ties as necessary.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
25
Figure 25. Electric Door Motor Electric Connections
1. Electric motor connector (2)
2. Door latch connector (2)
51. Ensuring the connectors match the actuator (FWD or AFT), connect the two door
latch connectors (Figure 25, Item 2).
52. Install new battery negative terminal nut.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
26
STRIKER ALIGNMENT PROCEDURE
Figure 26. Manual Door Release
1. Manual door release
53. If the doors are not already in the open position, with Key ON, Engine OFF, turn
manual door release (Figure 26, Item 1) to manual position and gently push open
entrance doors.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
27
Figure 27. Latch Bolts
1. Latch
2. M6 x 20 mm Torx bolt (2)
3. Entrance door striker
54. Loosen two M6 x 20 mm Torx bolts (Figure 27, Item 2).
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
28
Figure 28. Entrance Door Striker Bolts
1. Striker M6 x 20 mm Torx bolt (2)
55. Loosen two striker M6 x 20 mm Torx bolts (Figure 28, Item 1).
56. Turn manual release to active position and close aft entrance door, then check
entrance door striker and latch for proper alignment. The entrance door will make
two audible clicks when closed and latched properly.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
29
Figure 29. Entrance Door Striker
1. M6 x 20 mm Torx bolt (2)
2. Entrance door striker
57. Once determined that entrance door striker is in the correct position, hand tighten
two M6 x 20 mm Torx bolts (Figure 28, Item 1) on entrance door striker (Figure
29, Item 2).
58. Turn manual release to manual position and gently push open aft entrance door.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
30
Figure 30. Latch Bolts
1. Latch
2. M6 x 20 mm Torx bolt (2)
3. Entrance door striker
59. Tighten two M6 x 20 mm Torx bolts (Figure 30, Item 2) to 4.4–5.9 lb-ft (6–8 N·m).
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
31
Figure 31. Striker Bolts
1. M6 x 20 mm bolt (2)
60. With entrance door open, tighten two M6 x 20 mm striker bolts (Figure 31, Item
1) to 7.1–7.9 lb-ft (9.7–10.7 N·m).
61. Turn manual release to active position and close aft entrance door.
62. Repeat Steps 54–61 for forward entrance door if required.
63. Once entrance door striker has been properly aligned, open and close entrance
doors to check alignment, listen for two audible clicks for each entrance door,
and check alignment.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
32
Figure 32. Entry Door Overhead Compartment
1. 8 mm push-in fastener (4)
2. M6 x 20 mm flanged Torx screw (3)
3. 12–14 x .75 mm pan head Torx screw
64. Install overhead panel with four 8 mm push-in fasteners (Figure 32, Item 1) in
entry door overhead compartment.
65. Secure three M6 x 20 mm flanged Torx screws (Figure 32, Item 2) and one 12–
14 x .75 mm pan head Torx screw (Figure 32, Item 3) in entry door overhead
compartment and hand tighten.
66. If equipped, turn 12V disconnect to the ON position.
67. Remove wheel chocks.
END OF SERVICE PROCEDURE
LABOR INFORMATION
Operation
Number
Description
Time
A40-26901-1
Remove doors, drill, and install 5/16 in set screw.
0.8 hrs
Table 3 Labor Information
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
33
ADMINISTRATIVE PROCEDURE
Expense is to be charged to Warranty. Claims are to be submitted in the normal
manner, making reference to Authorized Field Change Number 26901.
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 submission, 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.
To ensure this important improvement is made in a timely manner, all claims
for 26901 activity must be submitted by 15 JUNE 2027 or within the normal
warranty period for the component repaired, if after 15 JUNE 2027.
International Motors, LLC*
*International Motors, LLC d/b/a
International Motors USA LLC in Illinois and
Ohio.
© 2026 International Motors, LLC*. All rights reserved.
All marks are trademarks of their respective owners.
*International Motors, LLC d/b/a International Motors USA LLC in Illinois and Ohio.
34
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TSB/Document ID: 26901
Replacement Service Bulletin Number:
MFR Communication Date: 2026-06-15
MFR Internal Campaign ID/Software Version: 26901
Communication Type: Service Campaign
NHTSA Components: STRUCTURE:BODY
MFR Component System:
MFR Component Subsystem:
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