Miata 1990-1997

Halfshafts

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Removal & Installation



Specific to:

Mazda Miata 1990-1994

  1. Raise and safely support the vehicle. Remove the wheel and tire assemblies
  2.  
  3. Remove the splash shield, and drain the transaxle
  4.  
  5. Raise the staked portion of the hub locknut with a hammer and chisel. Lock the hub by applying the brakes and remove the nut
  6.  
  7. Disconnect the stabilizer bar and control link from the lower control arm
  8.  
  9. Remove the cotter pin and nut from the tie rod end ball stud. Use a suitable tool to separate the tie rod end from the knuckle
  10.  
  11. Remove the transverse member
  12.  
  13. Remove the lower ball joint pinch bolt and nut. Use a prybar to pry down the lower control arm and separate the ball joint from the knuckle
  14.  
  15. If removing the left side shaft with automatic transaxle: Suspend the engine using engine support tool 49 G017 5A0 or equivalent. Remove the bolts and nuts and remove the engine mount member
  16.  
  17. Position a prybar between the inner CV-joint and transaxle case. Carefully pry the halfshaft from the transaxle, being careful not damage the oil seal. If equipped with a right side intermediate shaft, insert the prybar between the halfshaft and intermediate shaft and tap on the bar to uncouple them.
  18.  
  19. Pull outward on the hub/knuckle assembly, push the outer CV-joint stub shaft through the hub, and remove the halfshaft. If the halfshaft is stuck in the hub, install the old hub nut to protect the stub shaft threads. Tap on the nut, with only a soft mallet, and remove the halfshaft.
    NOTE
    Install plug tool 49 G030 455 or equivalent, into the transaxle after removing the halfshaft, to keep the differential side gear in position. If the gear becomes mis-positioned, the differential may have to be removed to realign the gear.

  20.  
  21. If necessary, remove the intermediate shaft by removing the support bearing bolts and pulling the shaft from the transaxle.
  22.  

    To install:

  23. If removed, install a new circlip on the end of the intermediate shaft, with the end gap facing upward.
  24.  
  25. Install the intermediate shaft in the transaxle, being careful not to damage the oil seals. Install the support bearing bolts and tighten, in sequence, to 45 ft. lbs. (61 Nm).
  26.  
  27. Install a new circlip on the end of the halfshaft, with the end gap facing upward. Insert the halfshaft into the transaxle, being careful not to damage the oil seal. If equipped, push the halfshaft into the intermediate shaft.
  28.  
  29. Insert the other end of the halfshaft through the hub. Loosely install a new locknut.
  30.  
  31. If installing the left side shaft with automatic transaxle, proceed as follows: Install the engine mount member. Tighten the mount member-to-body nuts and bolts to 66 ft. lbs. (89 Nm). Tighten the front mount-to-mount member nuts to 77 ft. lbs. (104 Nm) and the side mount bolts to 44 ft. lbs. (60 Nm). Remove the engine support tool.
  32.  
  33. Install the lower ball joint into the knuckle. Install the pinch bolt and nut and tighten to 26-41 ft. lbs. (35-56 Nm).
  34.  
  35. Install the transverse member, and tighten the bolts to 69-96.9 ft. lbs. (94-132 Nm).
  36.  
  37. Connect the tie rod end to the steering knuckle and tighten the nut to 24-32 ft. lbs. (32-44 Nm). Install a new cotter pin. Tighten the nut, if necessary, to align the ball stud hole with the nut castellation.
  38.  
  39. Connect the stabilizer bar to the lower control arm.
  40.  
  41. Install the splash shield and the wheel and tire assemblies. Lower the vehicle.
  42.  
  43. Lock the hub with the brakes. Tighten the new hub nut to 173.6-235 ft. lbs. (236-318 Nm). After torquing, stake the locknut using a hammer and dull bladed chisel.
  44.  
  45. Fill the transaxle with the proper type and quantity of fluid.
  46.  

Specific to:

Mazda Miata 1995-1997

  1. Raise and safely support the vehicle. Remove the wheel.
  2.  
  3. Lock the rear hub by applying the brakes and remove the halfshaft locknut.
  4.  
  5. Remove the brake caliper assembly.
  6.  
  7. Remove the lower arm to knuckle bolt.
  8.  
  9. Matchmark the halfshaft and output shaft for proper alignment before removing the halfshaft.
  10.  
  11. Pull outward on the hub/knuckle assembly, push the outer CV-joint stub shaft through the hub, and remove the halfshaft. If the halfshaft is stuck in the hub, install the old hub nut to protect the stub shaft threads. Tap on the nut, with only a soft mallet, and remove the halfshaft. Remove the halfshaft from the differential by using a prybar.
  12.  

    To install:

  13. Install a NEW clip onto the halfshaft. With the ends of the clip facing upward install the halfshaft into the differential with the matchmarks aligned. Verify that the halfshaft is being held in place by the clip.
  14.  
  15. Insert the other end of the halfshaft through the hub. Join the hub/knuckle assembly to the lower arm and install the bolt and nut. Torque the bolt/nut to 40-47 ft. lbs. (54-63 Nm) on 1995 models and 47-54 ft. lbs. (63-74 Nm) on 1996-97 models.
  16.  
  17. Install the brake caliper assembly.
  18.  
  19. Lock the rear hub, install a new locknut and torque to 235 ft. lbs. (318 Nm) on 1995 models and 160-216 ft. lbs. (216-294 Nm) on 1996-97 models. Stake the nut after proper torque.
  20.  
  21. Install the wheel. Lower the vehicle.
  22.  

 
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