R22BY-SB – Improperly Grounded Air Compressor Housing – 2018-2022 Blue Bird All American & Vision School Buses

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July 14, 2022 NHTSA CAMPAIGN NUMBER: 22V505000

Improperly Grounded Air Compressor Housing

An improperly grounded air compressor can cause electric shock, increasing the risk of injury.

 

NHTSA Campaign Number: 22V505

Manufacturer Blue Bird Body Company

Components ELECTRICAL SYSTEM

Potential Number of Units Affected 482

 

Summary

Blue Bird Body Company (Blue Bird) is recalling certain 2018-2022 All American and Vision school buses equipped with Cummins PD7000 Electric Drivetrains containing an electric air compressor. The air compressor housing is improperly grounded, causing electrical voltage greater than 50V AC during operation.

 

Remedy

Dealers will install an electrical ground strap between the compressor motor housing and vehicle chassis, free of charge. Owner notification letters were mailed February 6, 2023. Owners may contact Blue Bird’s customer service at 1-478-822-2242. Blue Bird’s number for this recall is R22BY-SB.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

 


Campaign Number: C2619

BES PD7000 Air Compressor Grounding Safety Campaign

 


Chronology :

April 21, 2022: A Cummins employee experienced a mild electric shock, when he touched the air compressor motor housing at a Cummins facility.

April 21 through May 11, 2022: Cummins conducted an investigation to understand the cause of the issue.

During the investigation, the voltage between the air compressor housing and vehicle chassis for the incident unit was measured as 110 V to 130V AC. Testing was conducted on the two configurations of air compressor and inverter assemblies to understand the ground paths and to verify the missing ground.

May 11 through June 1, 2022: A Cummins Product Safety Hazard Analysis was conducted. Testing was completed on the current production air compressor to confirm that it does not have this condition.

June 1 through June 28, 2022: Cummins escalated the issue through its Product Safety Defect Determination process.

June 28, 2022: Based upon the results of the investigation, the Cummins Product Safety Defect Board decided to conduct a safety campaign to address this condition. To date, there have been no reports of electrical shock (other than the Cummins employee on April 21, 2022 or injuries due to this condition.

July 12, 2022: Blue Bird Corporation was notified by Cummins of the Air Compressor Safety Recall Campaign.

 


22E054 – Improperly Grounded Air Compressor Housing – Cummins Electric Drivetrain

 

22E054 – Improperly Grounded Air Compressor Housing – Cummins Electric Drivetrain

 


10 Affected Products

Vehicles

MAKE MODEL YEAR
BLUE BIRD ALL AMERICAN 2018-2022
BLUE BIRD VISION 2018-2022

 


10 Associated Documents

Defect Notice 573 Report

RCLRPT-22V505-6940.PDF 214.689KB

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Recall Acknowledgement

RCAK-22V505-8292.pdf 645.85KB

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ISSUED Interim Owner Notification Letter(Part 577)

RIONL-22V505-0422.pdf 93.958KB

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Recall 573 Report – 1/23/23

RCLRPT-22V505-7845.PDF 214.79KB

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Recall 573 Report – 1/23/23

RCLRPT-22V505-3040.PDF 214.79KB

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Recall 573 Report – 1/23/23

RCLRPT-22V505-1801.PDF 214.79KB

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Recall 573 Report – 1/23/23

RCLRPT-22V505-6202.PDF 214.79KB

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Remedy Instructions and TSB

RCRIT-22V505-1862.pdf 2171.291KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-22V505-1272.pdf 99.162KB

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Recall Quarterly Report #1, 2023-1

RCLQRT-22V505-6673.PDF 211.139KB

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=22V505&docType=RCL

 


 

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