Ram B1500, B2500, B3500, 1999-2003

Removal & Installation

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This procedure applies to vehicles with one and two-piece driveshafts. Also note that two types of U-joint bolt-ups are used. One uses small clamps to join driveshaft and yoke; the other uses a flange-and-yoke bolted directly together.


NOTE
Do NOT allow the shaft(s) to drop or hang from any U-joint during removal. Attach the driveshaft to the vehicle underside with wire to prevent damage to the joints.

  1. Place the transmission in neutral.
  2.  
  3. Raise and safely support the vehicle securely on jackstands.
  4.  
  5. With two-piece axles, mark the position of the center support bracket on the frame crossmember. Unbolt and remove the support bracket bolts.
  6.  
  7. Matchmark the driveshaft and the rear axle drive yoke.
  8.  
  9. Remove the rear U-joint clamp attaching bolts and both clamps from the rear axle yoke, if fitted. Some models may have a yoke bolted directly to the flange. Remove the bolts if this type is fitted.
  10.  
  11. Use a suitable prybar to gently pry the U-joint out of the yoke.
  12.  
  13. Wrap the U-joint caps with tape to prevent them from falling off the U-joint.
  14.  
  15. Pull the driveshaft to the rear until the slip yoke clear the extension housing.
  16.  


NOTE
Fluid may run from the rear of the extension housing when the shaft is removed, so position a suitable drain pan under the area. Extension housing plugs are available to prevent a constant stream of fluid from escaping the transmission (see illustration).


WARNING
It is very important to protect the external machined surface of the slip yoke from damage during and after driveshaft removal. If the yoke is damaged, the transmission extension seal may be damaged and therefore cause a leak.

  1. On two-piece driveshafts:
    1. Slide the rear half of the shaft off the front shaft splines at the center bearing. Remove the rear half.
    2.  
    3. At the transmission end of the front half, remove the bushing retaining bolts and clamps, after matchmarking. If there is a driveshaft brake, there will be flange nuts.
    4.  
    5. Use a hammer and punch to tap the slinger away from the shaft to provide room for a bearing splitter.
    6.  
    7. Press off the bearing.
    8.  

  2.  

To install:

  1. Lubricate the front yoke of the driveshaft with transmission fluid and insert it into the transmission.
  2.  
  3. Install the center bearing support bracket bolts. Leave final tightening to the end of the procedure.
  4.  
  5. On models with a U-joint clamp, align the U-joint with the rear axle drive yoke and position the U-joint in the yoke. Install the yoke clamps and tighten 1 / 4 in. bolts to 14 ft. lbs. (19 Nm) and 5 / 16 in. bolts to 25 ft. lbs. (34 Nm).
  6.  
  7. On models with a flange-and-yoke setup, tighten the bolts to 80 ft. lbs. (108 Nm).
  8.  
  9. Tighten driveshaft brake flange nuts, if fitted, to 35 ft. lbs. (47 Nm).
  10.  
  11. Tighten the center bearing bracket bolts to 50 ft. lbs. (68 Nm), ensuring that the bracket is aligned with the marks made on removal.
  12.  
  13. Lower the vehicle.
  14.  



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Fig. Driveshafts are balanced and must be matchmarked with the differential yoke for installation reference. Mark yoke, cross and shaft



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Fig. Loosen the U-joint clamp bolts . . .



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Fig. . . . and remove the clamps from the yoke



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Fig. Two types of mountings for two-piece driveshafts. Mark bracket for position on crossmember before removal



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Fig. Driveshaft connection with clamps



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Fig. Flange-and-yoke driveshaft connection



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Fig. Remove the U-joint from the rear yoke. It may be necessary to use a prybar to free the U-joint



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Fig. Slide the driveshaft back until the sliding yoke clears the extension housing seal.



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Fig. This plug can be used to minimize oil loss

 
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