AMC Coupes/Sedans/Wagons 1975-1988 Repair Information

Driveshaft and U-Joints

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See Figures 1 through 6

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Fig. Fig. 1: Exploded view of a common type 1 driveshaft assembly



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Fig. Fig. 2: Exploded view of a type 2 driveshaft assembly



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Fig. Fig. 3: Unfasten the U-bolt retaining nuts ...



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Fig. Fig. 4: ... then remove the U-bolts from the driveshaft



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Fig. Fig. 5: Hold the U-joint caps and remove the driveshaft from the vehicle



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Fig. Fig. 6: Use tape to hold the U-joint caps in place to prevent loss of the needle bearings inside the caps

Two types of driveshafts are used, designated types 1 and 2, depending on the type of bearing cap retaining ring. See the illustration.

REMOVAL & INSTALLATION



Except Eagle
  1. Mark the rear universal joint yoke and bearing retainers so that you can reinstall them in their original positions.
  2.  
  3. Remove the U-bolts, being careful not to lose the round bearing retainer caps, which are filled with little needle bearings. Don't make any attempt to remove the large nut holding the yoke to the front of the rear axle assembly.
  4.  
  5. Slide the driveshaft back and remove it.
  6.  

To install:
  1. On installation, slide the front yoke on the transmission output shaft splines far enough to align the rear universal joint.
  2.  
  3. Align the marks you made in Step 1.
  4.  
  5. Install the rear U-bolts and tighten them evenly to 15 ft. lbs. A torque wrench isn't essential here, but remember that 15 ft. lbs. isn't very much. You can crush the bearings and retainer caps if you get carried away.
  6.  

Eagle See Figure 7

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Fig. Fig. 7: Exploded view of the Eagle driveshaft components

Both driveshafts are secured at the transfer case end and the axle yoke end by straps. The straps are retained by Torx head bolts.

  1. Shift into Neutral. Raise and support the car.
  2.  
  3. Matchmark the driveshaft(s) at the transfer case and axle yoke for alignment reference.
  4.  
  5. Remove the retaining straps with a Torx bit tool of the proper size. Remove the driveshaft(s).
  6.  
  7. To install, align the matchmarks made during removal to assure proper balance. Seat the universal joints in the yokes and install the straps, tightening to 17 ft. lbs.
  8.  

U-JOINT OVERHAUL



See Figures 8 through 22

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Fig. Fig. 8: Check the CV-boot for wear



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Fig. Fig. 9: Removing the outer band from the CV-boot



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Fig. Fig. 10: Removing the inner band from the CV-boot



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Fig. Fig. 11: Removing the CV-boot from the joint housing



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Fig. Fig. 12: Clean the CV-joint housing prior to removing boot



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Fig. Fig. 13: Removing the CV-joint housing assembly



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Fig. Fig. 14: Removing the CV-joint



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Fig. Fig. 15: Inspecting the CV-joint housing



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Fig. Fig. 16: Removing the CV-joint outer snapring



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Fig. Fig. 17: Checking the CV-joint snapring for wear



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Fig. Fig. 18: CV-joint snapring (typical)



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Fig. Fig. 19: Removing the CV-joint assembly



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Fig. Fig. 20: Removing the CV-joint inner snapring



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Fig. Fig. 21: Installing the CV-joint assembly (typical)



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Fig. Fig. 22: Basic Driveshaft Problems

The four end bearings or roller retainers are held in the yoke ends by snaprings on the front U-joint. The rear U-joint has 4 retainers held by U-bolts.

  1. The snaprings can be pried out with a screwdriver.
  2.  
  3. Place the assembly in a vise with a 9 / 16 in. socket against the bearing retainer on one side and a 1 1 / 8 in. socket against the yoke on the other side.
  4.  
  5. Tighten the vise slowly; the bearing retainer will be forced out into the big socket.
  6.  
  7. Clamp the protruding bearing retainer gently in the vise and remove it. Watch our for the little needle bearings inside.
  8.  
  9. Remove the other bearings retainers in the same way.
  10.  

To install:
  1. Wash all the parts in a safe solvent and check carefully for wear. These parts aren't very expensive and aren't serviced often, so replace any doubtful parts. The 4-armed part is called a cross or a spider.
  2.  
  3. Pack enough high quality grease into each bearing retainer so that you can install the needle bearings without them falling out.
  4.  
  5. Install the cross into the yoke and put the end bearing retainer in place.
  6.  
  7. Place the yoke in a vise and press the bearing retainer, using a 9 / 16 in. socket, past the outside of the yoke.
  8.  
  9. Install the snaprings, making sure that they are securely seated.
  10.  

 
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