Installation

1. If the lugs on the axle companion flange are shaved or distorted so that the bearings slide, replace the flange.

2. Lubricate the yoke spline with Long-Life Lubricant C1AZ-19590-BA (ESA-M1C75-B) or equivalent. Remove the tool from the extension housing. Install the yoke on the transmission output shaft. Do not allow the yoke assembly to bottom on the output shaft with excessive force.

Install the driveshaft so that the index marks or the yellow mark (if visible) on the yoke (light side) is in line with the yellow mark on the companion flange. This prevents vibration which occurs when the balance of the shaft and balance of the axle pinion flange become additive instead of neutralizing. If a vibration exists, the driveshaft should be disconnected from the axle, rotated 180° and re-installed.

3. On all except E-150, install the U-bolts and nuts that attach the U-joint to the companion flange. Tighten the U-bolt nuts to 11-20 Nm (8-15 ft-lbs). On E-150, install the bolts retaining the axle flange yoke to the circular companion flange. Tighten to 83-117 Nm (61-87 ft-lbs).