Dodge Ram Truck 1500-2500-3500. Manual — part 78

Condition

Possible Causes

Correction

Differential Gears Scored

1. Insufficient lubrication.

1. Replace scored gears. Fill
differential with the correct fluid type
and quantity.

2. Improper grade of lubricant.

2. Replace scored gears. Fill
differential with the correct fluid type
and quantity.

3. Excessive spinning of one
wheel/tire.

3. Replace scored gears. Inspect all
gears, pinion bores, and shaft for
damage. Service as necessary.

Loss Of Lubricant

1. Lubricant level too high.

1. Drain lubricant to the correct
level.

2. Worn axle shaft seals.

2. Replace seals.

3. Cracked differential housing.

3. Repair as necessary.

4. Worn pinion seal.

4. Replace seal.

5. Worn/scored yoke.

5. Replace yoke and seal.

6. Axle cover not properly sealed.

6. Remove, clean, and re-seal
cover.

Axle Overheating

1. Lubricant level low.

1. Fill differential to correct level.

2. Improper grade of lubricant.

2. Fill differential with the correct
fluid type and quantity.

3. Bearing pre-loads too high.

3. Re-adjust bearing pre-loads.

4. Insufficient ring gear backlash.

4. Re-adjust ring gear backlash.

Gear Teeth Broke

1. Overloading.

1. Replace gears. Examine other
gears and bearings for possible
damage.

2. Erratic clutch operation.

2. Replace gears and examine the
remaining parts for damage. Avoid
erratic clutch operation.

3. Ice-spotted pavement.

3. Replace gears and examine
remaining parts for damage.

4. Improper adjustments.

4. Replace gears and examine
remaining parts for damage. Ensure
ring gear backlash is correct.

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FRONT AXLE - C205F

DR/DH

Condition

Possible Causes

Correction

Axle Noise

1. Insufficient lubricant.

1. Fill differential with the correct
fluid type and quantity.

2. Improper ring gear and pinion
adjustment.

2. Check ring gear and pinion
contact pattern.

3. Unmatched ring gear and pinion.

3. Replace gears with a matched
ring gear and pinion.

4. Worn teeth on ring gear and/or
pinion.

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-load.

7. Mis-aligned or sprung ring gear.

7. Measure ring gear run-out.
Replace components as necessary.

8. Loose differential bearing cap
bolts.

8. Inspect differential components
and replace as necessary. Ensure
that the bearing caps are torqued
tot he proper specification.

9. Housing not machined properly.

9. Replace housing.

REMOVAL

1. With vehicle in neutral, position vehicle on hoist.

2. Remove axle half shafts.

3. Remove exhaust crossover.

4. Mark front propeller shaft and remove shaft.

5. Remove suspension crossmember mounting bolts

(3) and remove crossmember.

DR/DH

FRONT AXLE - C205F

3 - 145

6. Support axle with hydraulic jack.

7. Remove axle housing pinion mounting bolts (1).

8. Remove axle shaft tube mounting bolts (2).

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FRONT AXLE - C205F

DR/DH

9. Remove differential housing (2) mounting bolts (3).

10. Lower axle from the vehicle.

INSTALLATION

1. Raise axle into position.

2. Install axle mounting bolts and tighten nuts to 95

N·m (70 ft. lbs.).

3. Install suspension crossmember and bolts. Tighten

crossmember nuts (3) to 102 N·m (75 ft. lbs.).

DR/DH

FRONT AXLE - C205F

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