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Input Thru Shaft Nut M39X1.5 (Yoke)
Its fine-thread M39 × 1.5 design provides high clamping force and precision tightening, maintaining proper preload on the input shaft assembly. Made from high-strength alloy steel, the nut withstands extreme torque, vibration, and rotational stress encountered during heavy-duty vehicle operation. Its robust construction prevents loosening, protects the yoke spline engagement, and ensures long-term reliability.
By securing the input shaft and yoke connection, this nut contributes to smooth power transfer, reduced drivetrain vibration, and extended gearbox life.
Key Features
- Heavy-duty M39 × 1.5 fine-thread input shaft nut
- Designed for securing yoke on transmission input shaft
- High-strength alloy steel for maximum durability
- Provides strong clamping force and vibration resistance
- Maintains proper shaft preload and drivetrain stability
Product Specifications
| GROUP | MODEL | REF. PART NUMBER | SPECIFICATIONS |
|---|---|---|---|
| 13.040 | 3128, 2523, 2528 | A6819900152 | Input Thru Shaft Nut – M39 × 1.5 – Yoke Application |
Process Steps
- Align the yoke onto the input shaft splines.
- Thread the M39 × 1.5 nut onto the shaft by hand to ensure proper engagement.
- Tighten the nut to OEM-specified torque using a calibrated tool.
- Install locking hardware (if required) to prevent loosening.
- Verify yoke seating and shaft preload.
- Test for smooth rotation and check for vibration during operation.
FAQ
What is the purpose of the Input Thru Shaft Nut?
It secures the yoke to the input shaft, ensuring stable and reliable power transmission.
When should this nut be replaced?
Replace if threads are worn, damaged, or during major yoke or transmission servicing.
