Question about Chevrolet Silverado 1500

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I cannot get the fron axle to lock in on my 89 chevy 4x4 350 engine. i have replaced the actuator and still noting. i do get all the indicator lights on but still only the back tire spins. i bought this truck a week ago from my uncle that had no use for the 4x4 so he had not engaged it in 2-3 years. Please, any ideas? Thanks

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Automatic Locking Hubs REMOVAL & INSTALLATION The following procedure covers removal & installation only, for the hub assembly. The hub should be disassembled ONLY if overhaul is necessary. In that event, an overhaul kit will be required. Follow the instructions in the overhaul kit to rebuild the hub.

  1. Remove the capscrews and washer from the hub cap. Fig. 1: Exploded view of the automatic locking hubs i cannot get the fron - 84907274.gif

  2. Remove the hub cap and spring.
  3. Remove the bearing race, bearing and retainer.
  4. Remove the keeper from the outer clutch housing.
  5. Remove the large snapring to release the locking unit. The snapring is removed by squeezing the ears of the snapring with needle-nose pliers.
  6. Remove the locking unit from the hub. You can make this job easier by threading 2 hub cap screws into the outer clutch housing and hold these to pull out the unit. To install:
  7. Wipe clean all parts and check for wear or damage.
  8. Coat all parts with the same wheel bearing grease you've used on the bearings.
  9. Position the locking unit in the hub and install the large snapring. Pull outward on the unit to make sure the snapring is fully seated in its groove.
  10. Install the keepers.
  11. Install the bearing retainer, bearing and race. Make sure that the bearing is fully pack with grease.
  12. Coat the hub cap O-ring with wheel bearing grease and install the hub cap.
  13. Install the capscrews and washers. Tighten the screws to 45 inch lbs. (5 Nm).
Manual Locking Hubs The engagement and disengagement of the hubs is a manual operation which must be performed at each hub assembly. The hubs should be placed FULLY in either Lock or Free position or damage will result. WARNING
Do not place the transfer case in either 4-wheel mode unless the hubs are in the Lock position! Locking hubs should be run in the Lock position periodically for a few miles to assure proper differential lubrication. prev.gif next.gif

Posted on Aug 05, 2010

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