309701-51 - Genuine Eaton 15.5" Advantage Self-Adjust Clutch Assembly - 3 - wisentpartscenter.com

Description

Eaton 309701-51 Clutch - Genuine Eaton 15.5" Advantage Self-Adjust Clutch Assembly

The Eaton 309701-51 is a genuine 15.5 inch Advantage Self-Adjust clutch assembly for manual transmission trucks. It connects and disconnects engine power to the transmission, and the self-adjust mechanism keeps the clutch set as the facings wear so the pedal free travel stays right.

Key Functions:

- Connects and disconnects engine power to the transmission
- Self-adjusting to keep the clutch set as it wears
- 15.5 inch, 1650 ft-lb torque capacity

Fitment & Specifications:

- Mack and Volvo 11L and 13L engines
- 15.5 inch, 1650 ft-lb
- 2 inch x 10 spline, 4 spring damper
- Advantage Self-Adjust

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The clutch is what lets the driver connect and break engine power to the transmission to shift and start off. As the friction facings wear, a standard clutch needs periodic manual adjustment or the pedal free travel drifts. This one adjusts itself, so it stays set through its life and holds consistent release, which is easier on the driver and the transmission. The wear indicator window on the cover shows NEW to REPLACE so you can see how much life is left.

Issue Symptoms / When to Replace

Slipping under load, chatter or grabbing on engagement, hard shifting or grinding from the clutch not releasing, and the wear indicator reading REPLACE. A worn out clutch slips and can burn, and one that will not release makes it hard to get into gear.

Before replacing it, check the clutch linkage or hydraulics and the release bearing, and make sure the self-adjust has not just seized, since those cause the same symptoms.

Brand Information

Eaton is the original manufacturer of these heavy duty truck clutches, and the Advantage Self-Adjust is their genuine design. It is built to the torque rating and spline the driveline needs, and the self-adjust and wear indicator are Eaton features a copy cannot properly reproduce. On a clutch that has to hold engine torque and release cleanly, the genuine unit is what holds up.

Installation Notes

The self-adjust mechanism has to be set to the NEW position with the Eaton clutch reset tool before install, or it will not adjust correctly in service. Check the flywheel and pilot bearing while you are in there, resurface or replace the flywheel if it is worn, and set the clutch brake and pedal free travel to Eaton spec.

How to Identify an OEM Part

A genuine unit has EATON and ADVANTAGE SELF ADJUST cast into the cover along with the NEW/REPLACE wear indicator window. Check the part number on the tag matches your order and confirm the size, spline and spring count match your application. Copies lack the cast Eaton markings and the self-adjust indicator.

Why buy from Wisent Parts
  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warranty & Return Information
Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.