Oshkosh S-Series recalls

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2024-2025 S-Series vehicles. The front axle housing wall thickness may not be sufficient and can cause the axle to fail.

Risk

Front axle failure can cause a sudden loss of vehicle handling and control, increasing the risk of a crash.

Remedy

Oshkosh will inspect and replace the front axles as necessary, free of charge. Owner notification letters were mailed on May 30, 2025. Owners may contact Oshkosh customer service at 1‑833‑304‑8100.

Recall number 25V228000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2022-2024 S-Series vehicles. The throttle pedal assembly may contain an oversized magnet carrier, slowing the responsiveness or causing the pedal to stick.

Risk

A pedal that sticks increases the risk of a crash.

Remedy

Oshkosh will replace the throttle pedal, free of charge. Owner notification letters were mailed January 31, 2025. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 24V917000 · Recall details

What is wrong

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.

Risk

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

Remedy

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.

Recall number 22V378000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The u-bolts securing the front axle may fail.

Risk

Bolt failure may allow the front axle to shift or detach, increasing the risk of a crash.

Remedy

Oshkosh will provide new u-bolts, free of charge. Owner notification letters were mailed February 24, 2022. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 22V009000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. The fuel tubes between the fuel rail and the injector for cylinders 4, 5 and 6 may be susceptible to cracking, resulting in a high pressure fuel leak.

Risk

A high pressure fuel leak in the presence of an ignition source may increase the risk of a fire.

Remedy

On engines with 75 miles or less, dealers will install vibration isolators to the fuel tubes. Engines with more than 75 miles will receive new fuel tubes with vibration isolators. Repairs will be performed free of charge. Owner notification letters are expected to be mailed February 1, 2022. Owners may contact Oshkosh customer service at 1-8088-686-7278.

Recall number 22V008000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2020-2021 S-Series vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.

Risk

A loss of power steering assist increases the risk of a crash.

Remedy

Owners will inspect and replace the power steering pump as necessary. Owners may perform this work themselves or reach out to one of our service centers to perform the inspection and repair work free of charge. Owner notification letters were mailed on December 15, 2021. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 21V851000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2019-2022 S-Series vehicles. These vehicles were manufactured with 10 amp Anti-Lock Brake System (ABS) fuses, instead of the required 15 amp ABS fuses.

Risk

The incorrectly sized fuse may blow during an ABS braking event, increasing the risk of a crash.

Remedy

Oshkosh will provide owners new fuses, a new fuse label, and installation instructions, free of charge. Owner notification letters were mailed on July 29, 2021. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 21V482000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2021 S-Series vehicles. The auxiliary axles may not have been properly secured and may detach.

Risk

A detached axle may cause a loss of vehicle control, increasing the risk of a crash.

Remedy

A technician will inspect and, as necessary, replace any improperly installed fasteners, free of charge. Owner notification letters were mailed on May 26, 2021. Owners may contact Oshkosh customer services at 1‑888‑686‑7278.

Recall number 21V322000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2020-2021 S-Series vehicles. The rear axle output shaft may not have been heat-treated properly, which could cause the shaft to fracture.

Risk

A fractured rear output shaft may cause the shaft or interaxle driveline to detach from the vehicle, increasing the risk of a crash or injury.

Remedy

Oshkosh will notify owners, and owners will be instructed to inspect the output shaft, and if necessary, order a new one and replace it, free of charge. The recall began on March 31, 2021. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 21V125000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2020 S-Series vehicles equipped with Bendix pressure switches. The plastic threads holding the two halves of the pressure switch may strip when the switch is pressurized, resulting in an air leak which, if severe enough, can cause the air system to lose pressure when the brakes are applied. Failure of the front and rear brake switches will also result in a loss of brake light functionality.

Risk

As a result of a pressure switch air leak, the braking distance may be diminished and/or the parking brake may automatically engage. If the vehicle is equipped with an affected brake switch on both the front and the rear brakes and both parts fail, the brake lights may not operate. These conditions may increase the risk of a crash.

Remedy

Oshkosh will notify owners, and dealers will inspect the brake pressure switch and replace it as necessary, free of charge. The recall began September 28, 2020. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 20V499000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2018-2019 S-Series Mixer vehicles equipped with Cummins X12 engines with two hydraulic lines. The hydraulic hoses may have been unintentionally switched and installed to the wrong location, which can cause a loss of hydraulic assist steering.

Risk

Loss of hydraulic assist steering may make it difficult to steer the vehicle, increasing the risk of a crash.

Remedy

Oshkosh will notify owners, and Oshkosh S-Series Service will correct any improperly installed hoses, free of charge. The recall began August 12, 2019. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 19V486000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain 2014-2019 S-Series Glider vehicles equipped with a strobe light package in the rear fender. The strobe lights may have been incorrectly located in the rear fender marker light position, potentially causing confusion for other drivers. As a result, the vehicles fail to comply with Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective devices, and associated Equipment."

Risk

Strobe lights in this location may be wrongly interpreted when signaling others, increasing the risk of crash.

Remedy

Oshkosh will notify owners, and replace the strobe lamp with a steady burning lamp, free of charge. The recall began April 10, 2019. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 19V092000 · Recall details

What is wrong

McNeilus Truck & Manufacturing, Inc. (McNeilus) is recalling certain 2016-2018 McNeilus Meridian Front Loader, Atlantic Front Loader, XE Rear Loader, Bridgemaster Mixer, Standard Mixer, and Oshkosh S-Series vehicles, equipped with certain MPVE-250 One-Turn Valves (OTV) on the CNG fuel tanks. If the valve knob is turned more than one turn, the valve's snap ring may fail and the valve stem may forcibly eject from the valve body.

Risk

The forcible ejection of the stem may increase the risk of injury to those nearby. Additionally, the unintended release of CNG can increase the risk of a fire.

Remedy

McNeilus will notify owners, and dealers will replace the valve with a valve from another brand, free of charge. The recall began January 7, 2019 . Owners may contact McNeilus customer service at 1‑888‑686‑7278.

Recall number 18V858000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain model year 2016 S-Series Front Discharge Concrete Mixers manufactured May 16, 2016, to May 25, 2016, equipped with a Cummins ISX12 or ISX15 engine using certain engine control modules (ECM). These ECM's may experience an internal electrical short that can cause a fuse to blow, resulting in an unexpected engine stall without the ability to restart the engine.

Risk

An engine stall can increase the risk of a crash.

Remedy

Cummins will notify owners, and dealers will replace the existing ECM with a new ECM, free of charge. The recall began onJuly 7, 2016. Owners may contact Oshkosh customer service at 1‑888‑686‑7278. Owners may also contact Cummins customer service at 1‑800‑343‑7357. Oshkosh's number for this recall is 16E047-Cummins C1792.

Recall number 16V410000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain model year 2014-2015 S-Series concrete mixers manufactured July 16, 2014, to June 30, 2015. The affected concrete mixers are powered with compressed natural gas (CNG) and are equipped with pressure relief devices (PRD) that may not function as designed, failing to vent a buildup of pressure, such as could occur if the CNG tank was exposed to fire.

Risk

If the PRD does not activate in the event of a buildup of pressure, the CNG tank may explode, increasing the risk of fire and injury.

Remedy

Oshkosh will notify owners, and dealers will inspect and replace the PRD's, as necessary, free of charge. The recall began on September 25, 2015. Owners may contact Oshkosh customer service at 1‑888‑686‑7278. Oshkosh's number for this recall is Emcara 15E-059.

Recall number 15V532000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain model year 2015 S-Series Front Discharge concrete mixer glider trucks manufactured February 10, 2015, to March 20, 2015. The affected vehicles have Allison HD4500 transmissions that were remanufactured by Valley Truck Parts that may be coated with a thick layer of paint on the torque converter to adaptation kit mounting surface which can soften during vehicle operation. This may result in the mounting bolts loosening.

Risk

If the mounting bolts loosen, the bolts on the torque converter bolt flange may shear, resulting in a sudden loss of drive power, and increasing the risk of a crash.

Remedy

Oshkosh has notified owners, and Valley Truck Parts will remove the paint from the mating surface of the torque converter, and replace the bolts, free of charge. The recall began on May 8, 2015. Owners may contact Oshkosh customer service at 1‑888‑686‑7278.

Recall number 15V412000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain model year 2012-2014 S-Series Front Discharge Concrete Mixer vehicles manufactured February 29, 2012, to November 13, 2013, and equipped with certain Cummins Westport ISL G engines. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.

Risk

If engine oil comes into contact with a hot surface, there is an increased risk of a fire.

Remedy

Cummins will notify owners on behalf of Oshkosh, and dealers will secure the ends of the 90-degree elbow. In addition, the electronic control module (ECM) will be reprogrammed with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Oshkosh customer service at 1‑888‑686‑7278 or Cummins customer service at 1‑800‑343‑7357.

Recall number 15V330000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain model year 2014-2015 S-Series Front Discharge Concrete Mixer vehicles manufactured September 24, 2013, to November 12, 2014. The affected vehicles have air tanks that hold less than the required 12 times the combined volume of the service brake chambers. As a result, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 121, "Air Brake Systems."

Risk

With the air tank volume being less than required, in certain situations the vehicle may have an insufficient quantity of air to operate the brakes, increasing the risk of a crash.

Remedy

Oshkosh will notify owners and dealers will install a larger capacity air tank, free of charge. The recall began April 15, 2015. Owners may contact Oshkosh customer service at 1‑888‑686‑7278. Oshkosh's number for this recall is VSR-TSB-010.

Recall number 15V193000 · Recall details

What is wrong

Oshkosh Corporation (Oshkosh) is recalling certain model year 2012-2014 S-Series Ready Mixed Concrete trucks manufactured February 29, 2012, through January 27, 2014, and equipped with certain Cummins Westport Model ISL G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper operation of the intake manifold pressure sensor.

Risk

The improper operation of the sensor could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.

Remedy

Cummins Inc. and Cummins Wesport Inc. will notify owners, and authorized Cummins service facilities will upload a new ECM calibration, free of charge. Cummins Inc. and Cummins Westport Inc. began notifying the affected vehicle owners in April 2014. Owners may contact Oshkosh at 1‑920‑235‑9150 or contact Cummins Inc. at 1‑800‑343‑7357.

Recall number 14V183000 · Recall details

What is wrong

Oshkosh Corporation is recalling certain model year 2013 S-Series ready mixed concrete trucks manufactured May 1, 2013, through November 27, 2013. In the affected vehicles, the brake pedal bracket may loosen due to missing lock washers.

Risk

A loose brake pedal bracket may allow the brake pedal to contact the floor of the cab, which would reduce the vehicle's braking capability and increase the risk of a crash.

Remedy

Oshkosh will notify owners, and dealers will inspect and correct the brake pedal mounting assembly as necessary, free of charge. The recall began February 7, 2014. Owners may contact Oshkosh at 1‑888‑686‑7278.

Recall number 13V651000 · Recall details

What is wrong

Oshkosh is recalling 302 my 2008 t-series, tx, sta, h, p, s and h-tractor, airport rescue, firefighting, commercial, concrete mixer and military trucks and highway vehicles equipped with haldex air brake system control valve. The rubber diaphragm used inside the quick release valve (qrv) may delaminate and may cause leakage levels past and/or through the diaphragm in excess of permissible specifications, or could cause a restriction in the air flow, thereby effecting pressure delivery to the service brakes and not allow the service brakes to release.

Risk

Malfunction of the air brake system could result in a vehicle crash.

Remedy

Oshkosh is working with haldex and will inspect and replace all effected qrvs free of charge. Please see 09e-004. The recall is expected to begin during june 2009. Owners may contact haldex at 1‑620‑365‑6911 or oshkosh at 1‑920‑235‑9151.

Recall number 09V152000 · Recall details

What is wrong

On certain trucks equipped with bendix sr-7 spring brake modulating valves, the internal rubber check valve may leak causing a delay in the application of the spring brakes to park the vehicle after the operator pulls the dash valve button.

Risk

This could delay or failure in applying the parking brakes which could result in a vehicle roll away, increasing the risk of a crash.

Remedy

Oshkosh is working with bendix to repair these vehicles (please see 07e-037). Bendix will install a check valve repair kit for the affected sr-7 spring brake modulating valve free of charge. The recall began on october 19, 2007. Owners may contact bendix at 440‑329‑9000 and oshkosh at 1‑920‑235‑9151.

Recall number 07V320000 · Recall details

What is wrong

On certain trucks equipped with arvinmeritor axle assemblies, the torque rod tower has a nonconforming location and weld. The weld can crack, leading to the tandem axle losing its anchor point, causing the driveline to bend to an angle outside its operating perimeters.

Risk

In turn, this can result in the driveline breaking or forcing the engine to stop. It is also possible for the tandem axle to drop to the ground and turn under the vehicle creating a condition that might include loss of vehicle control, which could result in a crash.

Remedy

Dealers will inspect the torque towers on the rear tandem and, if cracks are found, the torque tower will be rewelded according to instructions. Oshkosh has telephoned all owners in september 2006, advising them that until the torque tower is rewelded, owners should inspect for cracks at the base of the torque towers on the rear tandem on a weekly basis. The recall began on january 15, 2007. Owners may contact oshkosh at 1‑920‑233‑9427.

Recall number 06V390000 · Recall details

What is wrong

Vehicle description: front discharge concrete carriers with 6- or 8-wheel drive designed to operate off-road in difficult soils and terrain that are beyond the capability of conventional rear discharge concrete trucks. The frame rail flange impinged on the head of one or more lockbolts which attach the angle iron rear pedestal support bracket to the frame.

Risk

Bolt head impingment can cause the pedestal bolt retnetion system to lose the specified clamp load causing the concrete drum to separate from the truck chassis, increasing the risk of serious injury or death.

Remedy

Owners have been advised to immediately check all bolts on the rear pedestals. If any one horizontal lockbolt is loose or missing, to immediately replace the loose lockbolt. Oshkosh is providing replacement kits with instructions and has authorized labor reimbursement. Owners were called beginning december 10, 2000, to advise them of this problem. An owner notification letter was sent to each customer on december 15, 2001, to customers who had not replied to the initial communication. Owners should contact oshkosh at 1‑920‑235‑9151.

Recall number 01V342000 · Recall details

What is wrong

The stainless steel fasteners for the cab entry steps and grab handles can crack and break.

Risk

The steps and grab handles can separate from the truckbody under load from cab occupants entering or exiting the cab, which couldresult in an injury to users.

Remedy

Replace the step and grab handle stainless steel fasteners with grade 5 zinc and yellow coated fasteners. Oshkosh will send the replacement fasteners to owners with the notification letters. Owners will be requested to replace the fasteners on their vehicles, and will be reimbursed for the labor to perform the repair.

Recall number 92V171000 · Recall details

What is wrong

The rear tandem axle brakes do not meet the service brake application time requirements of fmvss 121.

Risk

Failure to meet standards of fmvss 121 increases brakingdistance and increases the possibility of an accident.

Remedy

The o.625 inch nylon air tubing between the chassis air manifold and the tandem service relay will be replaced with .75 inch nylon tubing, which will allow brake system to meet the service brake application time requirements of fmvss 121.

Recall number 91V194000 · Recall details

What is wrong

Step tread was designed with an upturned edge. Also, incorrect bolts were used to attach the steps to vehicle; incorrect bolts may fatigue and break allowing the steps to separate from cab.

Risk

Persons exiting the cab can trip and fall on upturnededges. Also, fatigue or broken bolts could cause the steps to break away at thetime that a person is entering or exiting the vehicles.

Remedy

Replace incorrectly designed steps, replace incorrect bolts.

Recall number 91V089000 · Recall details