7. A mainshaft comparison illustrates the SYE kit's length benefit. Also note how the OE mainshaft (bottom in the photo) has spiral-cut splines for the speedometer drive gear. This is a well-known weak point in the original design. This kit's new shaft doesn't have the spiral gears and also accommodates a 32-spline yoke, making it considerably stronger than stock.7. A mainshaft comparison illustrates the SYE kit's length benefit. Also note how the OE m 8. Slide the sprocket hub onto the new mainshaft, ensuring that the hub ring (where the shift fork rides) is installed with the "thick" end toward the end of the mainshaft that will accept the rear output yoke. The unit won't function properly if the hub is installed backwards. Make sure that the hub's snap ring is fully seated in its groove.8. Slide the sprocket hub onto the new mainshaft, ensuring that the hub ring (where the sh 9. Aside from the snap rings, the only tricky part is sliding the new mainshaft in place. The mainshaft, chain, shift fork, and front output shaft should all be installed as one assembly. An extra set of hands is handy for guiding the shift fork into its hole in the front case.9. Aside from the snap rings, the only tricky part is sliding the new mainshaft in place. 10. Apply silicone sealer to the gasket surfaces on the case halves. Verify that the pickup tube is properly seated in the oil pump on the back case half, then gently slide the pump and case half into place. Reinstall the bolts and torque them in a star pattern.10. Apply silicone sealer to the gasket surfaces on the case halves. Verify that the picku 11. Slide the plastic speedometer drive gear onto the mainshaft and gently seat it on top of the oil pump. Install the gear with the "thin" end of the spirals up as shown and secure it with the supplied snap ring.11. Slide the plastic speedometer drive gear onto the mainshaft and gently seat it on top 12. Apply a bead of silicone to the case and install the kit's new tailhousing on the back of the transfer case. The rear output bearing and oil seal are already installed. The tailhousing will only install one way; use the factory bolts and tighten in a star pattern.12. Apply a bead of silicone to the case and install the kit's new tailhousing on the back 13. Lubricate and install the original front output yoke on the shaft, then secure it using the supplied star washer and original nut. Lubricate the oil seal and new rear yoke's outside area, then slide the yoke onto the mainshaft. Position the supplied rubber star washer and new nut on the end of the yoke, then tighten.13. Lubricate and install the original front output yoke on the shaft, then secure it usin 14. After installing the speedometer drive gear (make sure it's clocked correctly), this 231 is ready for installation. The SYE kit allows the 231 to hold up behind V-8 power, and the longer driveshaft will span the extra distance created by a 7-inch YJ suspension lift without a transfer-case drop or high-pinion axles.14. After installing the speedometer drive gear (make sure it's clocked correctly), this 2 SOURCES Superlift Suspension Systems « | 1 | 2 | View Full Article Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!
