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Condition Possible Causes Correction Gear Teeth Broke 1. Overloading. 1. Replace gears. Examine other 2. Erratic clutch operation. 2. Replace gears and examine the 3. Ice-spotted pavement. 3. Replace gears and examine 4. Improper adjustments. 4. Replace gears and examine Axle Noise 1. Insufficient lubricant. 1. Fill differential with the correct 2. Improper ring gear and pinion 2. Check ring gear and pinion con- 3. Unmatched ring gear and pin- 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 pre- 7. Mis-aligned or sprung ring gear. 7. Measure ring gear run-out. 8. Loose differential bearing cap 8. Inspect differential components 9. Housing not machined properly. 9. Replace housing. HYDRA-LOK T (1) Park the vehicle on a level surface or raise vehicle on hoist so that the vehicle is level. (2) Remove the axle fill plug. fluid level is correct if the fluid is level with the bot- (4) Drive the vehicle in a tight circle for 2 minutes at 5mph to fully prime the pump. (5) Block the front tires to prevent the vehicle from moving. (6) Shift the transmission into the neutral. ground. (8) Rotate the left wheel by hand at a minimum of one revolution per second while an assistant rotates (9) The left wheel should spin freely at first and then increase in resistance within 5 revolutions until (10) The Hydra-Lok t differential has engaged properly if the wheels cannot be rotated in opposite (11) If the system does not operate properly, replace the Hydra-Lok t differential. STANDARD PROCEDURE - DRAIN AND REFILL (1) Drive the vehicle until the differential lubri- cant is at the normal operating temperature. (2) Raise vehicle on hoist. 3 - 14 REAR AXLE - 226RIA ZB REAR AXLE - 226RIA (Continued) |