"moan/drone noise"

[blacksnapon]

TSB
07-20-7 MOAN/DRONE AT 1500-2000 RPM - DANA 80 DUAL REAR WHEEL AXLE

Publication Date: September 24, 2007

FORD: 2008 F-Super Duty


ISSUE:
Some 2008 F-Super Duty 350 Chassis Cab vehicles equipped with a 6.4L engine and a Dana 80 dual rear wheel (DRW) axle may exhibit a 4th order engine moan/drone concern between 1500-2000 RPM.

ACTION:
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Replace the driveshaft with a revised part number per application. Refer to the 2008 Super Duty 250-550 Workshop Manual, Section 205-01, for driveshaft removal and installation procedures.

PART NUMBER PART NAME
8C3Z-4R602-EEA Driveshaft Asy - 140.8" WB/4X2/AUTO/DRW
8C3Z-4602-AHA Driveshaft Asy - 140.8" WB/4X4/AUTO/DRW
8C3Z-4R602-ADA Driveshaft Asy - 161.8" WB/4X2/AUTO/DRW
8C3Z-4R602-BMA Driveshaft Asy - 161.8" WB/4X4/AUTO/DRW
8C3Z-4R602-AMA Driveshaft Asy - 164.8" WB/4X2/AUTO/DRW
8C3Z-4R602-AVA Driveshaft Asy - 164.8" WB/4X4/AUTO/DRW
8C3Z-4R602-AFA Driveshaft Asy - 176.2" WB/4X2/AUTO/DRW
8C3Z-4R602-BDA Driveshaft Asy - 176.2" WB/4X4/AUTO/DRW