309701-82 | Genuine Eaton® Advantage Clutch 15.5” x 2” 7

1. Automatically Maintains Proper Clutch Adjustment

• The clutch adjusts itself as the friction material wears.

• Keeps the pedal feel, engagement point, and free play consistent.

• No need for a mechanic to do manual clutch adjustments.

2. Longer Clutch Life

• Proper adjustment reduces:

  • Heat

  • Slipping

  • Premature wear

• Extends the life of the clutch components.

3. Reduced Maintenance Costs

• No regular adjustment intervals.

• Fewer shop visits.

• Less downtime for commercial fleets.

4. Easier and Smoother Shifting

Because the clutch stays properly adjusted:

• Gear changes feel smoother

• Reduced grinding

• Better drivability for new or experienced drivers

5. Consistent Pedal Effort

• The clutch pedal remains easier to press over the entire life of the clutch.

• Prevents the pedal from getting harder or higher as the clutch wears.

6. Protects the Transmission

• Proper clutch engagement reduces shock and wear on:

  • Input shafts

  • Synchronizers

  • Gears

• Helps avoid damage caused by improper free play.

7. Ideal for Heavy-Duty Use

Eaton designs these clutches for:

• Semi trucks

• Heavy-duty vocational trucks

• High torque engines
  So they handle high loads and long hours very reliably.

1. Clutch Pedal Feels Wrong

• Pedal may be too high or too low

• Pedal may feel spongy, stiff, or inconsistent

• Engagement point changes as you press the pedal

In a properly working self-adjust clutch, pedal feel should stay consistent.

2. Difficulty Shifting Gears

• Hard or crunchy shifts

• Grinding when engaging a gear

• Gears pop out while driving

Indicates the clutch is not fully disengaging, possibly due to a faulty adjuster.

3. Slipping Clutch

• Engine revs increase without corresponding acceleration

• Especially noticeable under load or uphill

Could mean the clutch disc is worn, or the self-adjust mechanism isn’t compensating for wear.

4. Strange Noises

• Chirping, squealing, or rattling when pressing the clutch

• Clicking noises from the bell housing area

Sometimes caused by a sticking or damaged self-adjust mechanism.

5. Burning Smell

• Slipping clutch generates heat, which can produce a burning smell

Indicates clutch is not fully engaging due to improper adjustment.

6. Clutch Engagement Changes Over Time

• In a healthy self-adjust clutch, engagement point remains consistent

• If it moves higher or lower over time, the self-adjusting feature may have failed.

7. Reduced Performance or Power Transfer

• Reduced acceleration

• Hesitation when starting from a stop

• Engine revs rise but vehicle doesn’t respond proportionally