Underside view of a truck's rear axle, leaf springs, and fuel ta…

The factory 7 degree shim is missing on both sides, causing the rearmost u-joint to operate at nearly 8 degrees, instead of the recommended 0.5~3 degrees. This is contributing to the drumming & vibration in the cabin, and may eventually cause the u-joint to fail violently at high speed.
IF THE IMAGE IS TOO SMALL, click it.

F3TZ-5729-A JBG $29ea x2 sh tax; recommend new U-bolt set (4 bolts 8 nuts) JBG $28 sh tax ***********

.

R&R rear axle U-bolts to install stock-style wedges (labor only) $120 ***********

Owner caption August 2021 · Photo 35 of 130