Loss of Hydraulic Crane Control – 2019-2023 Maintainer Service Trucks

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February 7, 2023 NHTSA CAMPAIGN NUMBER: 23V057000

Loss of Hydraulic Crane Control

Losing control over the crane while it is moving may increase the risk of injury to the operator or those nearby.

 

NHTSA Campaign Number: 23V057

Manufacturer Maintainer Corporation of Iowa, Inc.

Components EQUIPMENT

Potential Number of Units Affected 1,120

 

Summary

Maintainer Corporation of Iowa, Inc. (Maintainer) is recalling certain 2019-2023 Maintainer Service Trucks with Hydraulic Telescopic Cranes. During crane operation, if power gets disconnected to the receiver on the Maintainer crane, the crane may continue to move without control of the user.

 

Remedy

Maintainer will install a software update, free of charge. Owner notification letters were mailed beginning February 7, 2023. Owners may contact Maintainer customer service at 1-800-831-8588.

 

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.

 


Technical Service Bulletin – 23V057

2/24/2023

 

APPLIES TO:

Specific Maintainer hydraulic cranes equipped with service/mechanics truck bodies produced from March 9, 2019 through February 8, 2023.

 

THE PROBLEM:

The affected units are equipped with an Eaton HFX20m CAN control module. The code/programming was designed in such a way that if power is removed from the R260 crane remote receiver, while the crane is being operated, the crane function may continue, without activation on the wireless remote by the customer.

 

THE REMEDY:

Maintainer will provide a software update to the HFX20m CAN control module free of charge to the customer.

 

PURPOSE:

To provide a software remedy that will prevent unintended or continued operation of the crane when not commanded by the operator.

 

Please read the entire document before proceeding with any work. Follow industry standards regarding safety equipment and procedures.

 

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Chronology :

Maintainer was notified by a customer on 02/02/23 that he was rotating his crane from the wireless crane remote. The remote lost link, he released the rotate function button, but the crane continued to rotate. The customer found the receiver on the crane to have no power. Maintainer was able to duplicate on a test bench that if the function is active on the transmitter when power is removed to the receiver, crane function can continue, because it is supplied power from the list HFX20m programmable controller. Power Systems tested back to version 2.06 when the product was released and was able to duplicate the failure mode. An else statement in the function block of the code was missing, preventing the stop of function output. Maintainer decided to file a recall on 02/03/23 after in house testing was completed. No property damage or bodily injury has been reported and no warranty claims have been submitted.

 


5 Affected Products

Vehicle

MAKE MODEL YEAR
MAINTAINER CRANE W/ SERVICE BODY 2019-2023

 


11 Associated Documents

Recall Acknowledgement

RCAK-23V057-7532.pdf 699.867KB

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Defect Notice 573 Report

RCLRPT-23V057-7938.PDF 214.539KB

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Recall 573 Report – February 10, 2023

RCLRPT-23V057-9053.PDF 214.651KB

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Manufacturer Notices(to Dealers,etc)

RCMN-23V057-9152.pdf 161.35KB

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Manufacturer Reimbursement Plan

RMRP-23V057-9824.pdf 111.844KB

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Remedy Instructions and TSB

RCRIT-23V057-4694.pdf 1645.359KB

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ISSUED Owner Notification Letter(Part 577)

RCONL-23V057-1616.pdf 112.22KB

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Recall Quarterly Report #1, 2023-1

RCLQRT-23V057-7260.PDF 211.133KB

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Recall Quarterly Report #2, 2023-2

RCLQRT-23V057-2181.PDF 211.229KB

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Recall Quarterly Report #3, 2023-3

RCLQRT-23V057-7891.PDF 211.445KB

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Recall Quarterly Report #4, 2023-4

RCLQRT-23V057-3282.PDF 211.554KB

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Latest Recalls Documents

For the Latest and Most Recent Recalls Information Visit the link below…

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=23V057&docType=RCL

 


 

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