155 Gear 14 Z
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In lieu of the crush sleeve, a solid spacer can be substituted into a489 case, which is the better way to go for several reasons: The solidspacer holds its dimension better under high-load use; it can be reusedmultiple times; and it allows the drive yoke to be removed and replacedwithout the possibility of altering the gear setup. Most importantly,though, the solid spacer can be installed normally during the trialassembly, and if the mesh pattern checks out, you're done. The spacer(right) from Randy's fits in place of the stock crush sleeve (left), anduses shims to fine tune the distance between the inner and outerbearings. This provides the required preload on the bearings when thepinion is installed. A good baseline setting for the spacer can beestimated by measuring the length of the old, used crush sleeve andadding shims to the spacer to match. Install the pinion and tighten thenut to specs. The tuning torque should measure between 14 and 19 in-lbfor new bearings, or between 6 and 10 in-lb if the old bearings arebeing reused, as measured with a beam-type inch-pound torque wrench. Ifit's too tight, add shim; if it's too loose, take some shim out. View Related Article
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