Driveshaft - Rear, One-Piece: Installation

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Inspect the extension housing seal for damage. Install a new seal as necessary. For additional information, refer to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70W/4R75W or AUTOMATIC TRANSAXLE/TRANSMISSION - TORQSHIFT .

Fig 1: Inspecting Extension Housing Seal For Damage
Courtesy of FORD MOTOR CO.
Check to see if a paint mark is present on the front of the driveshaft and on the end of the transmission output shaft.

Fig 2: Checking Paint Mark
Courtesy of FORD MOTOR CO.
Lubricate the slip-yoke spline with grease.

Fig 3: Identifying Lubricate Slip-Yoke Spline With Grease
Courtesy of FORD MOTOR CO.

NOTE: Depending on the paint markings, there are two methods of indexing the driveshaft and the output shaft.

Install the driveshaft.
- Preferred method - align the factory-made paint marks on the output shaft and driveshaft and position the driveshaft in the transmission.
- Alternate method - align the index marks and position the driveshaft in the transmission.
  
  Fig 4: Aligning Index Marks
  Courtesy of FORD MOTOR CO.
  
  Fig 5: Identifying Index-Mark On Driveshaft And Transmission Extension Housing
  Courtesy of FORD MOTOR CO.

CAUTION: Install the driveshaft with new bolts. If new bolts are not available, apply sealer to the threads of the original bolts.

CAUTION: The driveshaft flange yoke fits tightly on the pinion flange pilot. To make sure that the yoke seats squarely on the flange, tighten the bolts evenly in a cross pattern as shown in Fig 6.

Fig 6: Bolt Tightening Pattern - With Torque Specification

Courtesy of FORD MOTOR CO.

Position the driveshaft flange yoke on the pinion flange with the index marks aligned, and install the bolts.