350S13 | Genuine Eaton No-Spin Differential 24 Spline Rockwell

24-spline axle shafts
350 mm ring gear applications
2.38-inch axle shaft diameter

• Prevent one-wheel spin
  • An open differential sends most of the engine's torque to the wheel with the least traction.
  • A No-Spin differential automatically locks both axle shafts together, allowing both wheels to drive the vehicle.
• Improve traction
  • Provides better performance on:
    • Mud
    • Snow
    • Ice
    • Sand
    • Gravel
    • Loose dirt
    • Uneven terrain
• Increase off-road capability
  • Helps the vehicle continue moving even if one drive wheel is lifted off the ground or on a slippery surface.
• Automatic operation
  • No switches, air compressor, or electronic controls are required.
  • The locking and unlocking happen mechanically based on wheel speed and torque.
• Improve durability
  • Built with heavy-duty internal components for high-torque applications.
  • Well suited for commercial trucks and demanding environments.

1. Excessive banging or clunking

• A light click or clunk during turns is normal for an automatic locker.
• Loud, repeated banging during acceleration, deceleration, or turning may indicate worn internal components or excessive backlash.

2. Failure to lock

If one drive wheel loses traction:

• The opposite wheel does not receive power.
• The vehicle behaves like it has an open differential.
• Traction is much worse than normal.

This can indicate broken locking teeth, damaged springs, or worn internal components.

3. Stays locked during turns

A healthy No-Spin differential unlocks while cornering. If it remains locked:

• Tires may chirp or scrub on dry pavement.
• The vehicle may resist turning.
• Steering can feel jerky or bind.

Possible causes include seized internal parts or mechanical damage.

4. Grinding or metal-on-metal noise

Grinding from the axle housing is not normal and may indicate:

• Broken locking components
• Damaged gears
• Bearing failure
• Metal debris inside the differential

This condition should be inspected promptly to avoid further damage.

5. Excessive backlash

Symptoms include:

• Clunk when shifting between drive and reverse.
• Delay before power reaches the wheels.
• Noticeable driveline slack.

The issue may be inside the locker or elsewhere in the axle assembly.

6. Metal in the differential oil

During a gear oil change, finding:

• Large metal flakes
• Broken gear teeth
• Steel fragments

can indicate internal failure of the differential or ring-and-pinion gears.

7. Uneven tire wear

If the differential isn't unlocking properly:

• Tires may wear faster.
• Tires may show scuffing or scrubbing patterns.
• Tire chirping during normal parking-lot turns may become excessive.

8. Vibration

A failing locker or damaged differential bearings may cause:

• Vibration during acceleration.
• Noise that changes with vehicle speed.
• A humming or growling sound from the axle.