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CONDITION POSSIBLE CAUSE CORRECTION Loss Of Lubricant 1. Lubricant level too high. 1. Drain lubricant to the correct 2. Worn axle shaft seals. 2. Replace seals. 3. Cracked axle housing. 3. Repair as necessary. 4. Worn pinion seal. 4. Replace seal. 5. Worn/scored pinion flange 5. Replace pinion flange and seal. 6. Axle cover not properly sealed. 6. Remove, clean, and re-seal Axle Overheating 1. Lubricant level low. 1. Fill differential to correct level. 2. Improper grade of lubricant. 2. Fill differential with the correct 3. Bearing preload too high. 3. Readjust bearing pre-load. 4. Insufficient ring gear backlash. 4. Re-adjust ring gear backlash. Gear Teeth Broke 1. Overloading. 1. Replace gears. Examine other 2. Ice-spotted pavement. 2. Replace gears and examine 3. Improper adjustments. 3. Replace gears and examine Axle Noise 1. Insufficient lubricant. 1. Fill axle with the correct fluid type 2. Improper ring gear and pinion 2. Check ring gear and pinion 3. Unmatched ring gear and pinion. 3. Replace gears with a matched 4. Worn teeth on ring gear and/or 4. Replace ring gear and pinion. 5. Loose pinion bearings. 5. Adjust pinion bearing pre-load. 6. Loose differential bearings. 6. Adjust differential bearing preload. 7. Misaligned or sprung ring gear. 7. Measure ring gear run-out. 8. Housing not machined properly. 8. Replace housing. 3 - 180 REAR AXLE - 210RII LX |