Ford E3TZ-4234-C Shaft Assy - Rear Axle

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Both types of rear end designs use hypoid gears with the pinion gear centerline below the axleshaft centerline.

Separate the carrier from the axle case.

The Dana 50-IFS was available on F250 and F350 4x4s and is now an option on the F250 only.

Unscrew and remove the bolts which attach the axleshaft flange to the hub. There is no need to remove the wheel or jack up the vehicle.

Remove the axleshaft by pulling on the flange. If the axle is stuck, it can sometimes be removed by reinstalling the wheel assembly and using the greater leverage of the wheel to pull it out. Be careful not to damage the seal if you are reusing it, although seals should always be replaced whenever an axle is removed.

Remove the brake vent tube (if equipped).

Position a jack under the axle assembly.

Installation is the reverse of removal. Install a new gasket between the brake backing plate and the axle housing flange. Be careful not to damage the inner lips of the axle seal when you are inserting the axleshaft into the housing. Install the axleshaft retaining nuts and tighten to the torque.

The Dana model 60 Monobeam axle is now standard on the F350 4x4.

Always ensure that an axle unit is changed for one of identical type and gear ratio.

Remove the brake lines from the clips that retain them to the axle but do not disconnect any of the line fittings.

Insert the wheel bearing and seal remover, T85L-1225-AH or equivalent, and a slide hammer into the axle bore and position it behind the bearing so the tanks on the tool engage the bearing outer race. Remove the bearing and seal as a unit.

The final tightening of the axleshaft retaining bolts should be done after the wheel lug nuts have been tightened, if the wheel was removed.

Install the right-hand axle shaft as follows: a. Ensure that the rubber boot is properly installed on the carrier stub shaft. Slide a new outer axle shaft boot clamp onto the rubber boot. The model 35 front axle does not use blind, or master, splines. Therefore, special attention should be made to ensure that the yoke ears are in line (in phase) during assembly. b. Slide the right axle shaft assembly through the hole in the steering knuckle, into the rubber boot and engage the splines of the stub shaft. Ensure the splines are fully engaged. c. Position the rubber boot and clamp onto the outer axle shaft and crimp the clamp securely on the rubber boot using Keystone Clamp Pliers T63P-9171-A.

Remove the axle assembly free from the vehicle by simultaneously lowering and sliding out to disengage the right-hand axleshaft from the stub axle slip joint.

Use Ford part No. ESP-M2C154-A locking differential fluid or its equivalent, and add 4 oz. of Ford part No. EST-M2C118-A friction modifier or its equivalent.

Make sure all axle components are in good, serviceable condition. If not, replace them with new ones.

The second location is on a metal tag hanging from the axle cover-to-carrier bolt at the 2 o'clock position in the cover bolt circle.