Alternator Cable Clamps Incorrectly Installed – 2019-2022 Oshkosh S-Series 2.0 Concrete Mixers

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May 26, 2022 NHTSA CAMPAIGN NUMBER: 22V378000

Alternator Cable Clamps Incorrectly Installed

Damaged alternator electrical cables can increase the risk of a fire.


NHTSA Campaign Number: 22V378

Manufacturer Oshkosh Corporation


Potential Number of Units Affected 1,316



Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series 2.0 Concrete Mixers. Incorrectly installed alternator electrical cable clamps may rub against the vehicle frame or hydraulic hose, possibly damaging the alternator cables.



Oshkosh will provide instructions on how to inspect the wiring, reposition the clamps, and properly secure the cables. The repair can be performed by the owner or an Oshkosh service center, free of charge. Owner notification letters were mailed on June 23, 2022. Owners may contact Oshkosh’s customer service at 1-888-686-7278.



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


NHTSA Campaign Number: 22V-378


A concern affecting safety exists in some Oshkosh S-Series 2.0 Front Discharge Mixers. Vehicles have been identified that have alternator cables routed that may rub against components and over time wear cable sleeve or insulation exposing cable wires. The defect may cause a thermal event if the positive alternator cable is worn and makes contact with the vehicle’s sub frame. This bulletin provides instruction on rerouting the alternator cables.


Affected Vehicles:

The affected vehicle population is Oshkosh S-Series 2.0 Front Discharge Mixers produced in 2018-2022.

Units Affected: S-Series 2.0 Front Discharge Mixers within the following VIN range: 788727 – 814106

Please refer to the attached VIN list of affected vehicles. Perform the procedure to and make a warranty claim against only the vehicles on this VIN list.


Time Completion:

Complete the enclosed procedure for each affected vehicle. The time of accomplishment may vary due to a number of factors; however, the estimated time for inspection and cushion clip reorientation is 0.5 hours.


Required Action:

Review and verify your ownership of all affected serial numbers of Oshkosh vehicles. Oshkosh records indicate that you are the owner of one or more affected vehicles, a VIN List is enclosed. Please be reminded that it is a violation of Federal law for you to sell or lease the vehicles covered by this notification until this recall has been performed on these vehicles. Substantial civil penalties apply to violations of this law.


Chronology :

In late March 2022, Oshkosh was initially notified by a customer that it had experienced a thermal event with one of its trucks. Additional information was received in April 2022, and Oshkosh took steps to have the vehicle returned to it for inspection and review. Because the concrete located in the drum had hardened, this complicated the transportation of the vehicle to the Oshkosh facility. An assessment of the vehicle took place in April 2022 and observed that the clearance between the alternator cable wiring and the hydraulic hoses for the hood assembly did not appear to be sufficient and there was chafing of the cables. Oshkosh then inspected preproduction vehicles that had been produced before the vehicle involved in this incident but did not find any signs of wearing or chafing of the cables. In April 2022, Oshkosh updated its work instructions to clarify the proper orientation and positioning of the cable routing to ensure sufficient clearance between the alternator cable and hydraulic hose. On May 19, 2022, Oshkosh decided to conduct a safety recall for this issue.


4 Affected Products




10 Associated Documents

Recall Acknowledgement

RCAK-22V378-4928.pdf 646.016KB

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Recall 573 Report

RCLRPT-22V378-2652.PDF 213.833KB

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Remedy Instructions and TSB

RCRIT-22V378-5998.pdf 2334.668KB

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Recall 573 Report- 06/24/2022

RCLRPT-22V378-7195.PDF 213.83KB

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Recall Quarterly Report #1, 2022-2

RCLQRT-22V378-5260.PDF 211.131KB

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Recall 573 Report- 09/14/2022

RCLRPT-22V378-1479.PDF 242.207KB

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Recall Quarterly Report #2, 2022-3

RCLQRT-22V378-9535.PDF 211.228KB

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Recall Quarterly Report #3, 2022-4

RCLQRT-22V378-7618.PDF 211.313KB

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Issued Owner Notification Letter (Part 577)

RCONL-22V378-1761.pdf 212.507KB

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Recall Quarterly Report #4, 2023-1

RCLQRT-22V378-5806.PDF 211.417KB

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