Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
SU2201
Service Bulletin/Repair Instructions
Cummins recently issued Temporary Repair Practice (TRP2484) for certain vehicles with DEF sensor failures in which DEF sensor replacement parts are not available. This provides a temporary ECM calibration that inhibits engine warning messages for communication errors with the DEF sensor allowing continued operation without engine derate. Regulators are allowing for this temporary calibration to be loaded in the engine ECM by a Cummins authorized repair location if the DEF sensor fails. This temporary calibration does not repair the failure therefore a final repair must be performed and the original calibration be re-installed. Field Service has been requesting an ECM image be uploaded within the support ticket as part of the diagnostics and is carried over into Service Update 2201 (SU2201). In order to receive an authorization code and utilize Cummins TRP2484, you must follow the process, as outlined in SU2201. The specific component affected is Assembly Code: 35-300 Emissions Components.
SM1906
Service Bulletin/Repair Instructions
The intent of Service Memorandum SM1906 is to make Blue Bird dealers aware that Cummins has released a calibration update improvement to reduce occurrence of âEngine fault codes 3555 and 3556â on Cummins diesel engines with the following base ECM calibrations, "HC80145 thru HC80250 and HB80104 thru HC80195"
SU1901
Service Bulletin/Repair Instructions
Models Affected: 2010 thru 2021 All American Subject: This update provides information on the new surge tank fill necks for All American Instructions: There is a new kit available from Part Sales; 10066291 - Kit, Neck, Surge Tank. This kit is available for use with the All American & TX4 surge tanks. Remove and discard existing neck from tank Install new neck using items in Kit 10066291 Kit, Neck, Surge Tank
SM1904
Service Bulletin/Repair Instructions
SM1904: New Ametek Parts & Software New Ametek instrument cluster part numbers and software now listed on the Blue Bird Dealer Vantage website. Also listed is a new Ametek gateway module and applicable software. New Ametek gateway module is only applicable to the Ford Gasoline Vision. Revisions have been made to Ametek instrument cluster software that improve or addresses items noted below. Improved fuel level dampening (only affects diesel fuel systems) Average fuel economy not displaying accurately (only affects diesel fuel systems) High or fast idle set up process on service part replacements (only affects service mode set up) Park brake indicator flashes and audible beep sounds when multiplex module goes in sleep mode (only affects certain Actia to Ametek service part replacements)
SM1905
Service Bulletin/Repair Instructions
SM1905: Blue Bird Vantage Dash Fault Codes Website Blue Bird Vantage "Dash Fault Codes" website page has been updated to include additional new fault codes for all applicable system types (brake, engine, and transmission). Also, "Powertrain, Ford" has been added to the drop-down tab as a system type selection. "Powertrain Ford" system type is used to identify both Ford engine and transmission fault codes.
S19AG
Service Bulletin/Repair Instructions
Blue Bird has determined that the CIT brand air conditioning relays should be replaced with Song Chuan brand relays (PN 00079077). Additionally, the wiring harness (PN 10023917) connected to the relay base should be inspected for any sign of damage and replaced, if necessary. Blue Bird will provide parts at no cost and will reimburse the repair time in accordance with the information presented below. Affected Units: This service bulletin includes: Certain model year 2015-2021 Vision School Buses manufactured from August 5, 2014 through September 11, 2019. Certain model year 2016-2021 All American School Buses manufactured from May 8, 2015 through September 8, 2019. Certain model year 2016-2021 Vision Non-school Buses manufactured November 20, 2014 through August 10, 2019. Certain model year 2015-2020 All American Non-school Buses manufactured September 15, 2014 through September 7, 2019. A separate printout is included which lists all of your buses that are affected by this service bulletin
SM1903
Service Bulletin/Repair Instructions
Service Memorandum (SM1903) includes basic troubleshooting steps for Cummins engines with "Aftertreatment Abnormal Update Rate Fault Codes". These codes indicate either a problem with the aftertreatment battery power/ground circuits, the proprietary data link circuits, or one of the components connected to the proprietary data link. Both Cummins and Blue Bird harnesses include the proprietary data link circuits, and power/ground circuits. Blue Bird harnesses include the aftertreatment powerground circuits, and the proprietary data link circuits on the OEM side of the 14-pin crossover connector that plugs to the Cummins engine harness. The Blue Bird supplied circuits go from the 14 pin OEM crossover connector to the SCR sensor table, DPF sensor table, and the DEF tank sensor. Proprietary data link circuits DO NOT go the the diagnostic port connector located inside the cab of the bus.
S19ZY
Service Bulletin/Repair Instructions
Overview: The Blue Bird or Cummins Dealer is to use the Cummins INSITE⢠electronic service diagnostic program to set the âRegeneration Inhibit Vehicle Speed Thresholdâ parameter value to 0 mph. Affected Units: All 2017-2020 model year Blue Bird All American School Buses with Cummins ISL-13 or L9 engines manufactured from January 20, 2016 through September 18, 2018 and all model year 2017 through 2020 Blue Bird All American Non-School Buses with Cummins ISL-13 or L9 engines manufactured from January 29, 2016 through September 7, 2018. On the subject buses, Blue Bird or Cummins Dealer is to use the Cummins INSITE⢠electronic service diagnostic program to set the âRegeneration Inhibit Vehicle Speed Thresholdâ parameter value to 0 mph. Repair Parts: None Time Allowance: Time allowed to use the Cummins INSITE⢠set the âRegeneration Inhibit Vehicle Speed Thresholdâ parameter value to 0 mph in each bus is 0.5 hours. Completion Notification: If you have an authorized Cummins Dealer perform this service bulletin, please notify your Blue Bird Dealer, when the repair is completed. Send the body number, repair date, and odometer reading to your Blue Bird Dealer. If you request reimbursement for labor, also send a copy of the work order/invoice to your Blue Bird Dealer.
SU1702
Service Bulletin/Repair Instructions
The intent of SU1702 is to provide service part replacement instructions for our new Ametek instrument cluster. The new cluster will be in full production beginning June 5, 2017. During the time between now and June 5, 2017 Blue Bird will be building some pilot units with the new cluster. Until full implementation Feature 40280 -14 will be added to pilot units. The new Ametek instrument clusters will also be used as a direct service part replacement for older Actia instrument clusters.
SM1608
Service Bulletin/Repair Instructions
New Blue Bird Support Center - Technical Bus Support: Dealer memo to announce the new on-line Blue Bird Support Center for technical bus support requests.
S16YU Instructio
Service Bulletin/Repair Instructions
Rear Air Disc Brake Axle Shaft Flange Gasket Replacement.
S16YW Instructio
Service Bulletin/Repair Instructions
Side Emergency Door Heater Pipe.
S16YX Instructio
Service Bulletin/Repair Instructions
Certification Label on Coated Fuel Tanks.
S16YX
Service Bulletin/Repair Instructions
S16YX, Certification Label on Coated Fuel Tanks: Certain 2017 model year Blue Bird Vision and All American School Buses manufactured from February 11, 2016, through August 22, 2016, and one model year 2017 All American Non- School Bus manufactured May 23, 2016, equipped with optional Coated Fuel Tanks will require the coating to be removed from the Certification label on the bottom of the fuel tank. On the subject buses, the Certification label on the bottom of the fuel tank may be covered by an applied coating. To correct, coating must be removed from the label.
S16YX Dealer Let
Service Bulletin/Repair Instructions
Certification Label on Coated Fuel Tanks.
S16YX Non School
Service Bulletin/Repair Instructions
Remove Coating from fuel tank certification label in order that label be visible.
S16YX Owner Lett
Service Bulletin/Repair Instructions
Certification Label on Coated Fuel Tanks.
S16YX School Bus
Service Bulletin/Repair Instructions
Remove Coating from fuel tank certification label in order that label be visible.
S16YW
Service Bulletin/Repair Instructions
S16YW, Side Emergency Door Heater Pipe: Certain 2016 through 2017 model year Blue Bird Vision and All American School and Non- School Buses equipped with optional Side Emergency Doors manufactured from October 21, 2014, through July 14, 2016, will require inspection of the heater pipe installation at the side emergency door.
S16YW Dealer Let
Service Bulletin/Repair Instructions
Side Emergency Door Heater Pipe.
S16YW Non-School
Service Bulletin/Repair Instructions
Will require inspection of the heater pipe installation at the side emergency
S16YW Owner Lett
Service Bulletin/Repair Instructions
Side Emergency Door Heater Pipe.
S16YW School Bus
Service Bulletin/Repair Instructions
Will require inspection of the heater ppe installation at thr side emergency door.
S16YU
Service Bulletin/Repair Instructions
S16YU, Rear Air Disc Brake Axle Shaft Flange Gasket Replacement: Certain model year 2015-2017 Vision and All American School Buses manufactured from November 15, 2013 through August 3, 2016 and certain model year 2015-2017 Vision and All American Non-School Buses manufactured from July 20, 2014 through May 21, 2016 equipped with optional Air Disc Brakes will require replacement of both existing rear axle shaft flange gasket with a new gasket. The new rear axle shaft flange gasket reduces the possibility for oil leaking between the axle shaft and hub. Note: Service Bulletin Campaign S16YU replaces S16YN.
S16YU Dealer Let
Service Bulletin/Repair Instructions
Rear Air Disc Brake Axle Shaft Flange Gasket Replacement.
S16YU Non-School
Service Bulletin/Repair Instructions
Equipped with optional Air Disk Brake will require replacement of both existing
S16YU Owner Lett
Service Bulletin/Repair Instructions
On the subject buses, the possibility exists for an oil leak between the axle shaft and hub. To correct this it is necessary to replace both existing rear axle flange gaskets with new gaskets.
S16YU School Bus
Service Bulletin/Repair Instructions
Equipped with optional Air Disk Brake will require replacement of both existing
SM1304
Service Bulletin/Repair Instructions
Gen 4 Analog DEF Level Sensor Troubleshooting: Original Date of Issue: February 25, 2013 Revision: July 5, 2016 The Service Memorandum updates the model year range, engine models affected, and includes Tank Assembly information.
SM1604
Service Bulletin/Repair Instructions
New Diesel Exhaust Fluid (DEF) Tank Assemblies (Gen 5 Tri-Function Sensor): Dealer Memo to provide service related information for buses equipped with new Diesel Exhaust Fluid (DEF) tank assemblies. Blue Bird buses equipped with new (DEF) tank assemblies have a Gen 5 Tri-Function Sensor. The Gen 5 Tri-Function Sensor provides the level, concentration, and temperature of the (DEF) Diesel Exhaust Fluid in the reservoir and returns a defined CAN message for these values. The sensor and controller communicates on a ?Private? J1939 data link with the Cummins ECM.
S16YN
Service Bulletin/Repair Instructions
Service Bulletin: Rear Air Disc Brake Axle Shaft Flange Nut Replacement: Certain 2015 through 2017 model year Blue Bird Visions and All Americans School and Non-School units equipped with optional Air Disc Brakes manufactured from November 15, 2013, through February 17, 2016, will require replacement of the existing rear axle flange nuts with a new non-locking nut and star washer. The new rear axle shaft nuts reduces the possibility for oil leaking between the axle shaft and hub.
SU1603
Service Bulletin/Repair Instructions
ACTIA Instrument Cluster Replacement: Instructions for ACTIA Instrument Cluster Replacement features.
S16YJ
Service Bulletin/Repair Instructions
Service Bulletin: Rear Engine Exhaust Cables: Certain 2011 through 2017 model year Blue Bird All American Rear Engine school and non-school buses manufactured from June 5, 2010 through December 8, 2015, and equipped with optional Cummins diesel engines may experience failure of the 5.50? rear engine exhaust support cables. Instructions are provided for Service Bulletin S16YJ, Rear Engine Exhaust Cables.
SU1601
Service Bulletin/Repair Instructions
T3 Electric Door Actuator Improvements: Service Update to announce the availability of a new kit from Part Sales. 10045705 - Kit, Actuator, Entrance Door, Electric, Service Only for electric operated entrance doors. Date Range: 09/19/2013 through 03/08/2017
SM1601
Service Bulletin/Repair Instructions
Blue Bird Troubleshooting Guides: Blue Bird announcement of the addition of troubleshooting guides for assisting in the service of the Blue Bird products. These troubleshooting guides are available on the Vantage website.