6.7L - 4WD - 3.55 Axle - Vibration And/Or Groan/Roar Noise Between 1700-2100 RPM

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NHTSA ID Number: 10202796

Manufacturer Communication Number: SSM 50237

Summary

Some 2021-2022 F-250 vehicles equipped with a 6.7L engine, 10.5 inch Sterling rear axle with a 3.55 gear ratio (tag S403N), and four-wheel drive (4WD) built on 01-Jun-2021 and through 01-Oct-2021 may exhibit a driveline vibration and/or growl/roar noise between 1700-2100 RPM. Before performing normal diagnostics in the Workshop Manual (WSM), inspect the rear axle to verify if a damper is installed on the pinion flange. If a damper is present, refer to WSM, Section 100-04 for normal diagnostics. If no damper is present, replace the rear axle drive pinion flange using service part number HC3Z-4851-A. Also, replace the rear pinion seal. Refer to WSM, Section 205-02. For claiming, use causal part 4001 and applicable labor operations in Section 04 of the Service Labor Time Standards (SLTS) Manual.

2 Affected Products

Vehicle


MAKE	MODEL	YEAR
FORD	F-250 SD	2021-2022

APPLICABLE VEHICLES

2021 – 2022 TRUCK: FE P558N SUPER DUTY

1 Associated Document

Manufacturer Communications

SSM 50237 – 2021-2022 F-250 – 6.7L – 4WD – 3.55 Axle – Vibration And/Or Groan/Roar Noise Between 1700-2100 RPM – Built On 01-Jun-2021 And Through 01-Oct-2021

https://www.nhtsa.gov/recalls?nhtsaId=10202796

MC-10202796-0001.pdf 93.975KB

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