Ford XL2Z-4A376-AA Drive Shaft Assembly

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Disconnect the negative cable from the battery. Raise the vehicle and support it securely on jackstands. Place the transmission in Neutral with the parking brake off. Look for the yellow paint marks made at the factory on the axle companion flange and the driveshaft flange. If these aren't visible, use a scribe, white paint or a hammer and punch to place marks on the driveshaft and the differential flange in line with each other. This is to make sure the driveshaft is reinstalled in the same position to preserve the balance. On 4WD On models, repeat for the front end of the driveshaft. Remove the bolts and lower the rear of the driveshaft. On 4WD models, remove the bolts and detach the front end from the transfer case. On 2WD models, slide the front end out of the transmission. Installation is the reverse of the removal with the following additions: On 2WD models, slide the front of the driveshaft into the transmission. On 4WD models, position the front end of the driveshaft on the transfer case with the alignment marks aligned. Raise the rear of the driveshaft into position, checking to be sure the marks are in alignment. If not, make sure the transmission is still in Neutral, then turn the rear wheels to match the pinion flange and the driveshaft. For 4WD models, use a scribe, white paint or a hammer and punch, place marks on the driveshaft and differential flanges in line with each other. Make alignment marks on the driveshaft and transfer case flanges. Unbolt the flange that secures the driveshaft double-cardan joint to the transfer case. Remove the bolts and straps that secure the front end of the driveshaft to the differential yoke. Wrap tape around the universal joint bearings at the axle end of the driveshaft so they won't fall off. Installation is the reverse of the removal with the following additions: Raise the front of the driveshaft into position, checking to be sure the marks are in alignment. If not, make sure the transmission is still in Neutral, then turn the front wheels to align the marks. Remove the tape securing the bearing cups and install the straps and bolts. Tighten the bolts.

That is a tube running between the transmission and the rear (or front) axle which transmits power towards wheel. It has universal joints on either end to allow for bending. On some driveshafts, there is a splined lip yoke that attaches it onto the transmission assembly while others have a slip yoke that permits suspension movement. Since the slip yoke at the front is not sealed completely, it uses an oil seal to prevent leaks. A driveshaft calls for infrequent attention such as lubricated universal joints and replacement in case of breakdowns. Hence, it should remain clean from dirt and debris or checked for possible wearing out of balancing weights. This will be indicated through noise or vibration when driving possibly diagnosed by road testing or checking for worn universal joint caps.

Disconnect the driveshaft from the rear axle companion flange, pull the driveshaft toward the rear of the vehicle until the slip yoke clears the extension housing, and plug the extension housing to prevent lubricant from leaking out.

To check for worn universal joints, follow these steps: a) Drive the vehicle slowly until the transmission is in High gear, then let off the accelerator and accelerate again. A clunking or knocking noise will indicate worn universal joints. b) Drive the vehicle at about 10 to 15 mph, place the transmission in Neutral, and listen for abnormal driveline noises while coasting. c) Raise the vehicle and support it securely on jackstands. With the transmission in Neutral, manually turn the driveshaft(s) and watch the universal joints for excessive play.

Disconnect the negative cable from the battery.

Removal of the drive shafts and drive axle.

An oil seal is used to prevent leakage of fluid and to keep dirt and contaminants from entering the transmission.