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Page 39 2. If the axle uses wet disc brakes and if a shim is not installed against axle housing flange face, then apply a thin uniform coat of adhesive #Q58-grade-226 on one side of the ring gear shim. 3. Carefully install the (0.8 mm thick) shim with the adhe- sive side against the axle housing flange face while guided on the wheel end studs. Apply pressure around the shim surface to make sure the shim will be bonded to the entire axle flange diameter surface. 4. Apply a thin coat of grease to the O-ring that will be assembled to the planetary ring gear face. (Reference line art in step 1) 5. Install the O-ring into the groove on the face of the planetary ring gear with care not to twist or damage the O-ring during installation. 6. Using the lifting strap, carefully lift the pre-assembled planetary wheel end assembly and slide the assembly along the (2) wheel end studs that were installed in the axle housing flange. Remove the (2) M18 safety bolts, nuts and washers, if installed through spindle flange and ring gear. 7. Make the final wheel end assembly by turning the axle input yoke to turn the planetary sun gear so the sun gear teeth will align with each of the planet pinion gears. 8. Verify that O-rings have not fallen out of grooves on both sides of ring gear. 9. Add medium strength thread locker to the (18) M18 axle housing flange threads. Install the (18) M18 cap- screw and washers to the axle housing flange/wheel end assembly. Torque to torque chart value. NOTE: Thread locker is Not required as these (2) nuts are lock nuts. Torque to torque chart value. Axle Air Leak Test Place axle in a safe test stand mounted with carrier input pinion horizontal for this assembly test. 140 kPa (1.4 Bars, 20 psi) into the axle housing breather port (7/16”-20 UNF). 2. Connect an air line with a shut off valve. 2.1 kPa (0.3 P.S.I)after 30 seconds. If a greater drop is noted, the axle assembly must be reviewed for location of air leak by wetting axle surfaces with soapy water and looking for expanding bubbles at an air leak. Once air leak is found and repaired, this test should be repeated. 5. Open shut off valve, bleed the air from the system, and remove the pressure gauge, and re-install the breather, or plug, if a remote breather is fitted. Axle Spin Test Place axle in a safe test stand mounted with carrier input pinion horizontal for this assembly test. supported drive motor, connect to the axle input yoke. 3. Run the axle at ~ 50 RPM at the wheels for 90 seconds in the forward direction. 4. If the axle has the wet brake option, slightly actuate each of the wet brakes separately to equalize speed to both wheels.If the axle is less the wet brake feature, just monitor in forward direction and reverse direction for items in step #5. 5. Monitor for noises, leaks, signs of overheating, unbalanced speeds. 6. Repeat for reverse input direction. oil screen for any abnormal particles. NOTE: If this oil is to be disposed, recommend in accordance with environmentally accepted practices. for abnormal particles. 9. Replace all (3) magnetic drain plugs and tighten per “Torque Table” in section 6. Section 4 Assembly Figure 4.32 SHIM DOWEL |