Usage:
STEP 1. Here are two typical No-SPIN differentials supplied for use with the regular axle gear support case assembly (and most No-SPINs are).
STEP 2. Remove carrier assembly from vehicle. Refer to MAINTENANCE-CARRIER ASSEMBLY. Before dismantling assembly, be sure that each bearing cap is marked as to its position on carrier bearing saddles (right or left side). If caps are not identified, mark them with a prick punch or chisel to assure proper reassembly. If caps are reversed (as they can be in some assemblies), this might affect bearing alignment.
STEP 3. No-SPIN does not affect bearing adjustment. Time can usually be saved by marking the original position of the differential bearing adjusting nuts, locks, rings or caps with a prick punch or cold chisel. Then, when reassembling, adjusting nuts are turned until the locks can be placed in the same position (marks aligned as shown). If axle is new, very probably the factory adjustment was correct, and it may be assumed that the bearings are properly adjusted. If the axle is used, a new adjustment may have to be make. In either event, the final adjustment should be verified according to the manufacturer's recommendations.
STEP 4. Open differential gear support case (F). Then lift out and discard the old differential assembly (Parts A through E should be discarded: Parts F, G and H should be retained). No-SPIN replaces spider (A), side gears (B), pinion gears (D), and all of the thrust washers (C) and (E) of the original differential. Do not remove ring gear (G) from case (F) unless worn or damaged. Do not remove cone assemblies from differential gear support case (F) or cover (F) if the bearings, (not shown) are to be re-used.
STEP 5. Thoroughly clean all of the parts that may be re-used (the ring gear with half of the case and bearing cone, the loose case half (cover) and bearing cone, and the bolts and nuts); rinse them in clean solvent and dry. Set these parts on a clean bench top for inspection.
STEP 6. Carefully examine the differential case. If trunnion holes are worn or scored or if the thrust surfaces on inside ends of the differential case are worn or scored, the case should be replaced. Examine threads of all bolts and nuts or cap screws. Replace those which show indications of being stripped or damaged. At this time it is a good practice to carefully examine bearings and ring gear for wear or damage. Be sure all thrust washers have been removed from the differential case.
STEP 7. Clean the axle shafts and examine the splined ends. Remove any roughness or burrs with a file or stone. (See " Important Note" after step 12).
STEP 8. Place the No-SPIN assembly in the differential case. (For good performance a snug fit of the differential case around the trunnions of the spider is absolutely necessary.) Do not remove the retainer bolt, nut and washers.
STEP 9. Position the differential case halves around the No-SPIN. See " Important Installation Note" on page 13. If the case halves are marked for proper alignment, be sure they are properly aligned.
STEP 10. Install the bolts and nuts or cap screws, whichever are used. Tighten them snugly but do not over torque and strip the threads. If cap screws are used, do the final tightening with a torque wrench. Re-check the fit between the spider trunnions and the case. As mentioned before, a loose fit between the spider and the case can stand in the way of the successful performance of the No-SPIN.
STEP 11. Remove the No-SPIN retaining bolt, nut and washers. Discard, or retain for future use if desired.
STEP 12. Before assembling into the axle carrier and housing, check splined end of axle shafts for a free sliding fit into side gear (as shown). See "Important Note" below. Follow manufacturer's instructions for finishing installation - use lockwire if required. Reassemble No-SPIN-equipped ring gear and carrier assembly in axle housing. Adjust differential bearings if required, check for proper fit of thrust blocks, etc. Refill axle housing with lubricant recommended by axle or vehicle manufacture.
(See paragraph re"Lubrication" on page 14.)
IMPORTANT NOTE:
Upon final assembly, the shaft should slide freely into the side gear splines. Do not attempt to force a shaft to fit by driving it into place or drawing it into place when tightening the studs or nuts and the flange end. This may compress the springs in the No-SPIN and cause it to malfunction.
STEP 13. Apply No-SPIN decal.