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Section 17 (Locking Hubs - Automatic): Overhaul: Reassembly

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 1988 GMC Suburban, 1988 GMC S15 Pickup, 1988 GMC S15 Jimmy, 1988 GMC Pickup, and 1988 GMC Jimmy. However, it is still accessible from the selected car via links, so may be relevant.
  1. Snap cam follower tangs over clutch gear flats. Compress conical spring and slide it into position with large end of spring against clutch gear.
  2. Position clutch gear assembly over hub sleeve splines. Cam follower teeth should be on hub sleeve end that has no splines. Clutch gear and spring should slide freely over hub sleeve splines.
  3. Assemble "C" retainer ring in hub sleeve groove. Assemble spring retainer over each end of return spring. Position one end of return spring with retainer against shoulder of clutch gear.
  4. Place spring support washer against retainer on return spring end. Compress return spring and assemble retainer ring in hub sleeve groove. Retain return spring using 2 fabricated clamps, while retainer ring is being assembled. See Figure .
  5. Place assembled components in outer housing. Position cam follower so 2 legs face outward. Install 3 cover screws into outer clutch housing for support and to permit clutch hub to drop down.
  6. Carefully work plastic outer cage into outer clutch housing with ramps facing cam follower. External tabs of plastic cage should be in wide groove of outer clutch housing.
  7. Assemble steel inner cage into outer cage, aligning outer cage tab with inner cage window. Assemble retaining ring into outer clutch housing, above outer cage.
    NOTE: Service brake band and drag sleeve as an assembly. If original lubricant has been removed or contaminated, use (1052750) lubricant.
  8. Assemble one of 2 tangs of brake band on each side of outer cage lug, located in window of steel inner cage. Remove 3 cover screws and set end of hub sleeve on a support. Assemble washer and snap ring above drag sleeve. To complete installation, install rebuilt hub as previously described in this article.
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