Nissan Pick-ups and Pathfinder 1970-1988

Rear Driveshaft and U-Joints

Print

REMOVAL & INSTALLATION



See Figures 1, 2, 3, 4, 5, 6 and 7

2wd Models
ONE-PIECE DRIVESHAFT
  1. Jack up the rear of the truck and support the rear axle housing with jackstands.
  2.  
  3. Paint a mating mark on the two halves of the rear universal joint flange.
  4.  
  5. Remove the bolts which hold the rear flange together.
  6.  
  7. Remove the splined end of the driveshaft from the transmission.
  8.  

If you don't want to lose a lot of gear or transmission oil, plug the end of the transmission with a rag.

  1. Remove the driveshaft from under the truck.
  2.  

To install:
  1. Apply multipurpose grease to the splined end of the shaft.
  2.  
  3. Insert the driveshaft sleeve into the transmission.
  4.  

Be careful not to damage the extension housing grease seal.

  1. Align the mating marks on the rear flange and replace the bolts. Tighten to 58-65 ft. lbs. (78-88 Nm).
  2.  
  3. Remove the jackstands and lower the vehicle.
  4.  

TWO-PIECE DRIVESHAFT WITH CENTER BEARING
  1. Raise the rear of the truck and support the rear axle housing on jackstands.
  2.  
  3. Before you begin to disassemble the driveshaft components, you must first paint accurate alignment marks on the mating flanges. Do this on the rear universal joint flange, the center flange, and on the transmission flange.
  4.  
  5. Remove the bolts attaching the rear universal joint flange to the drive pinion flange.
  6.  
  7. Drop the rear section of the shaft slightly and pull the unit out of the center bearing sleeve yoke.
  8.  
  9. Remove the center bearing support from the crossmember.
  10.  
  11. Separate the transmission output flange and remove the front half of the driveshaft together with the center bearing assembly.
  12.  

To install:
  1. Connect the output flange of the transmission to the flange on the front half of the shaft.
  2.  
  3. Install the center bearing support to the crossmember, but do not fully tighten the bolts.
  4.  
  5. Install the rear section of the shaft making sure that all mating marks are aligned.
  6.  
  7. Tighten all flange bolts to 17-24 ft. lbs. (24-32 Nm) on 1974-86 models. On 1986-88 models (D21-D series), tighten the bolts to 29-33 ft. lbs. (39-44 Nm)-Z24i engines; or 58-65 ft. lbs. (78-88 Nm)-VG30i engines.
  8.  
  9. Tighten the center bearing support bolts to 12-16 ft. lbs. (16-22 Nm).
  10.  

4wd Models
ONE-PIECE DRIVESHAFT
  1. Raise the rear of the truck and support the rear axle housing with jackstands.
  2.  
  3. Paint a mating mark on the two halves of the rear universal joint flange.
  4.  
  5. Remove the bolts which hold the rear flange together.
  6.  
  7. Remove the splined end of the driveshaft from the transmission. If you don't want to lose a lot of gear oil, plug the end of the transmission with a rag.
  8.  

The rear driveshaft on 1981-86 models is connected to the transfer case by means of a flange, simply unbolt it.

  1. Remove the driveshaft from under the truck.
  2.  

To install:
  1. Apply multipurpose grease to the splined end of the shaft.
  2.  
  3. Insert the driveshaft sleeve into the transmission (1986-88 D21-D) or mount the flange and tighten the bolts to 58-65 ft. lbs. (78-88 Nm) on 1981-86 720-D models.
  4.  

Be careful not to damage the extension housing grease seal.

  1. Align the mating marks on the rear flange and replace the bolts. Tighten to 58-65 ft. lbs. (78-88 Nm).
  2.  
  3. Remove the jackstands and lower the vehicle.
  4.  

TWO-PIECE DRIVESHAFT WITH CENTER BEARING
  1. Raise the rear of the truck and support the rear axle housing on jackstands.
  2.  
  3. Before you begin to disassemble the driveshaft components, you must first paint accurate alignment marks on the mating flanges. Do this on the rear universal joint flange, the center flange, and on the transmission flange.
  4.  
  5. Remove the bolts attaching the rear universal joint flange to the drive pinion flange.
  6.  
  7. Drop the rear section of the shaft slightly and pull the unit out of the center bearing sleeve yoke.
  8.  
  9. Remove the center bearing support from the crossmember.
  10.  
  11. Separate the transmission output flange and remove the front half of the driveshaft together with the center bearing assembly.
  12.  

To install:
  1. Connect the output flange of the transmission to the flange on the front half of the shaft.
  2.  
  3. Install the center bearing support to the crossmember, but do not fully tighten the bolts.
  4.  
  5. Install the rear section of the shaft making sure that all mating marks are aligned.
  6.  
  7. Tighten all flange bolts to 29-33 ft. lbs. (39-44 Nm)-Z24i engines; or 58-65 ft. lbs. (78-88 Nm)-VG30i engines.
  8.  
  9. Tighten the center bearing support bolts to 12-16 ft. lbs. (16-22 Nm).
  10.  



Click image to see an enlarged view

Fig. Fig. 1: Two piece rear driveshaft with center bearing-1981-86 2wd models (720-D series)



Click image to see an enlarged view

Fig. Fig. 2: Two piece rear driveshaft with center bearing-1986-88 2wd models (Z24i engine)



Click image to see an enlarged view

Fig. Fig. 3: One piece rear driveshaft-1981-86 4wd models (720-D series)



Click image to see an enlarged view

Fig. Fig. 4: One piece rear driveshaft-1986-88 4wd models (D21-D series)



Click image to see an enlarged view

Fig. Fig. 5: Two piece rear driveshaft with center bearing-1986-88 models (VG30i engines)



Click image to see an enlarged view

Fig. Fig. 6: Removing the center bearing bracket



Click image to see an enlarged view

Fig. Fig. 7: Disconnecting the driveshaft from the differential flange

U-JOINT OVERHAUL



See Figures 8 and 9

  1. Matchmark the yoke and the driveshaft.
  2.  
  3. Remove the snaprings from the bearings.
  4.  
  5. Position the yoke on vise jaws. Using a bearing remover and a hammer, gently tap the remover until the bearing is driven out of the yoke about 1 in. (25mm).
  6.  
  7. Place the tool in the vise and drive the yoke away from the tool until the bearing is removed.
  8.  
  9. Repeat Steps 3 and 4 for the other bearings.
  10.  
  11. Check for worn or damaged parts. Inspect the bearing journal surfaces for wear.
  12.  

To assemble:
  1. Install the bearing cups, seals, and O-rings in the spider.
  2.  
  3. Grease the spider and the bearings.
  4.  
  5. Position the spider in the yoke.
  6.  
  7. Start the bearings in the yoke and then press them into place, using a vise.
  8.  
  9. Repeat for the other bearings.
  10.  
  11. If the axial play of the spider is greater than 0.0007 in. (0.02mm), select snaprings which will provide the correct play. Be sure that the snaprings are the same size on both sides or driveshaft noise and vibration will result.
  12.  



Click image to see an enlarged view

Fig. Fig. 8: Paint matchmarks on the flanges



Click image to see an enlarged view

Fig. Fig. 9: Remove the snapring

 
label.common.footer.alt.autozoneLogo