TSB 20-2214
Service Bulletin Details
Public Details for: TSB 20-2214
Some 2015-2020 transit vehicles equipped with rear wheel drive (rwd), single rear wheel (srw) and a u-joint at the transmission flange and rear driveshaft may experience a boom/hum/moan noise or vibration from the rear while driving. This n
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Page 1 of 4 TECHNICAL SERVICE BULLETIN Boom/Hum/Moan Noise Or Vibration From Rear While Driving At Highway Speeds 20-2214 13 October 2020 Model: Ford 2015-2020 Transit Issue: Some 2015–2020 Transit vehicles equipped with rear wheel drive (RWD) and a U-joint at the transmission flange and rear driveshaft may experience a boom/hum/moan noise or vibration from the rear while driving. This noise or vibration is most prevalent at highway speeds (112-121 km/h [70–75 mph] for 4.10 axle ratio, 121-128 km/h [75-80 mph] for 3.73 axle ratio, and 136-145 km/h [85-90 mph] for 3.31 axle ratio) and may also be present to a lesser degree at roughly half of those speeds. This may be due to a 2nd order driveline frequency transmitted through the rear drive shaft, rear axle and into the body through the leaf springs. To correct the condition, follow the Service Procedure to install a driveshaft torsional damper. Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria: • 2015-2020 Transit • RWD • Boom/hum/moan noise or vibration at highway speeds • U-joint at the transmission flange and driveshaft NOTE: Part quantity refers to the number of that service part number required, which may be different than the number of individual pieces. Service part numbers contain 1 piece unless otherwise stated. "As Needed" indicates the part is required but the number may vary or is not a whole number; parts can be billed out as non-whole numbers, including less than 1. Parts Part Number Description LK4Z-4A263-C Torsional Damper Kit Quantity 1 Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description Operation No. Time 2015-2020 Transit: Diagnose, Inspect The Rear Driveshaft, Install A Driveshaft Torsional Damper And Torsion Damper Shield Includes Time To Remove The Pinion Nose Damper If Equipped (Do Not Use With Any Other Labor Operations Outside Of This Article) 202214A 1.1 Hrs. 2020 Transit Additional Time To Remove And Install Running Boards When Necessary (Can Be Claimed With Operation A) 202214B 0.3 Hrs. https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB20-2214/US/... 11/2/2020 Page 2 of 4 Repair/Claim Coding Causal Part: 4R602 Condition Code: D9 Service Procedure 1. Using the Mastertech® Series MTS 4000 Driveline Balance and NVH Analyzer (Vetronix) or equivalent, analyze the noise or vibration to determine the order. Does analysis identify the concern as a 2nd order driveline vibration? (1). Yes - proceed to Step 2. (2). No - this article does not apply. Refer to Workshop Manual (WSM), Section 205-01. 2. Inspect the rear driveshaft, driveshaft joints, driveshaft center bearing(s) and slip yoke splines for damage or wear. Refer to WSM, Section 205-01. Is there evidence of damage or wear to the driveshaft, driveshaft u-joints or slip yoke splines? (1). Yes - this article does not apply. Refer to WSM, Section 205-01. (2). No - proceed to Step 3. 3. Mark the pinion flange and rear drive shaft u-joint to enable correct indexing of the driveshaft during installation. Refer to WSM, Section 205-01. 4. If equipped, remove and discard the pinion nose damper from the axle assembly. 5. Remove and discard the driveshaft to axle pinion flange bolts. With a suitable strap, support the driveshaft so that there is no undue stress applied to the rear drive shaft to transmission output flange joint or rear driveshaft center bearing(s). Refer to WSM, Section 205-01 Removal and Installation, Rear Driveshaft. NOTE: The maximum articulation of any U-joint is 10 degrees. If the U-joint of the driveshaft is articulated further then the maximum allowable degrees damage may occur. 6. Inspect the pinion flange to driveshaft mating surface for any debris or excessive rust and clean as necessary. 7. Install the driveshaft torsional damper on the axle pinion flange. (Figure 1) Figure 1 https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB20-2214/US/... 11/2/2020 Page 3 of 4 8. Align the index-mark on the driveshaft and rear drive pinion flange and reinstall the drive shaft ensuring that the driveshaft fits securely over the raised flange on the torsional damper. (1). Install the driveshaft attaching bolts and tighten to 115 Nm (85 lb-ft) Refer to WSM, Section 20501. (Figure 1) 9. Install the torsion damper shield to the right side of the axle assembly near the pinion using the existing holes in the axle housing. Use the 2 bolts and the nut supplied in the torsional damper kit. Tighten to 48Nm (35 lb-ft). (Figure 2) Figure 2 https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB20-2214/US/... 11/2/2020 Page 4 of 4 © 2020 Ford Motor Company All rights reserved. NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by "do-it-yourselfers". Do not assume that a condition described affects your car or truck. Contact a Ford or Lincoln dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford Motor Company reserves the right to supersede this information with updates. The most recent information is available through Ford Motor Company's on-line technical resources. https://www.fordservicecontent.com/Ford_Content/vdirsnet/TSB/EU/~WTSB20-2214/US/... 11/2/2020