Some 2017-2019 Toyota Tacoma trucks equipped with the BD20 differential (non-TRD) may exhibit a noise or vibration from the rear at low speeds or while braking. This may be caused by excessive clearance between the brake drum and axle drum flange.
Some 2017-2019 Toyota Tacoma trucks equipped with the BD20 differential (non-TRD) may exhibit a noise or vibration from the rear at low speeds or while braking. This may be caused by excessive clearance between the brake drum and axle drum flange.
Side view showing where to measure flange boss diameter.
Inspect the rear axle flange for corrosion/rust buildup. If present, use a wire brush to clean. Measure the diameter of the axle flange boss using a dial or digital caliper. Take measurements in at least three clock positions. The specification is 4.252 – 4.250 inches (108.000 – 107.946 mm). If out of spec, replace the axle.
Use a caliper to measure flange boss diameter, in at least three locations to verify an accurate measurement.
About the Author
Information courtesy of Mitchell 1
Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.
Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety ofspecialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.
