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Service bulletin TSIB 26-08

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11036148
Published by NHTSA2026-08-12
Manufacturer's numberTSIB 26-08
Manufacturer's date2026-08-14
NHTSA componentSERVICE BRAKES

NHTSA's summary

This bulletin introduces new improved banjo bolts for buses equipped with a Haldex tandem air dryers. The updated banjo bolts feature enhanced corrosion resistance and are designed to replace the current banjo bolts to help minimize corrosion-related issues that may affect air dryer performance and reliability.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Brakes

Vehicles listed
NEW FLYER XCELSIOR2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
TSIB 25-032025-05-07. Service bulletin. This TSIB identifies the special procedures necessary when the bus is not in regular use and the air compressor is operated at a low duty cycle.
TSIB 22-072022-09-02. Service bulletin. This Technical Service Information Bulletin (TSIB) - New Flyer has developed several maintenance updates for Xcelsior buses specifically equipped with the optional Powerex electric air compressors. This TSIB introduces field modifications in order to simplify maintenance operations and/or improve compressor longevity
SMB1792019-05-01. Service bulletin. Service Manual Bulletin - revised troubleshooting charts for MGM E-Stroke brake monitoring system
SMB1512017-03-20. Service bulletin. SERVICE MANUAL BULLETIN - FRONT & REAR DISC BRAKE INSTALLATION.
SMB1492017-03-20. Service bulletin. SERVICE MANUAL BULLETIN - MAN AXLE FRONT & REAR WHEEL BEARING INSPECTION.
SMB-1202013-02-01. Service bulletin. NEW FLYER: AT TIME OF PUBLICATION, PREVENTIVE MAINTENANCE INFORMATION ON CALIPERS, BRAKE CHAMBERS, AND DISC BRAKE PADS, MAY NOT BE AVAILABLE AT TIME OF PUBLICATION. SERVICE MANUAL BULLETIN IS PROVIDING INFORMATION. MODEL XCELSIOR. NO MODEL YEARS LISTED. *PE