Overview
The ZF 0636.102.523 STUD (SKU: 0636.102.523) is a precision-machined, OEM genuine fastening component designed for high-stress applications within ZF construction machinery transmissions. This stud serves as a critical load-bearing anchor, securing the transmission housing assembly to the axle or bell housing. It ensures proper alignment and clamping force, preventing relative movement between mating surfaces under extreme torque and vibration. As a genuine ZF part, it guarantees exact thread pitch, tensile strength, and corrosion resistance required for long service life in heavy equipment. This stud is often installed alongside the 2098117002: HOUSING and the 2098301052: REAR AXLE HOUS. to create a rigid structural connection.
Symptoms of Failure
- Transmission oil seepage at mounting flange: A worn or stretched stud reduces clamping force, allowing the gasket or seal between the housing and axle to fail, leading to slow oil leaks.
- Abnormal gear engagement noise or vibration: When the stud loses its preload, the transmission housing can shift slightly under load, causing misalignment of internal gears and producing a distinct clunking or whining sound.
- Loose or shifting transmission assembly: Operators may notice the entire powertrain feels unstable during operation, with visible movement at the joint where the stud is located.
- Broken or stripped threads during removal: Fatigue or galvanic corrosion can cause the stud to snap or gall, making routine maintenance or replacement of the 0637101164: HEXAGON NUT impossible without extraction.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0636.102.523 |
| Material | High-tensile alloy steel, zinc-nickel plated |
| Thread Size (Estimated) | M16 x 1.5 (metric fine) |
| Overall Length | 95 mm |
| Threaded Length (Each End) | 30 mm / 30 mm |
| Weight | 0.18 kg (0.40 lbs) |
| OEM Reference | ZF 0636.102.523 |
| Grade | 10.9 (ISO 898-1) |
Compatibility
This genuine ZF stud is primarily used in heavy-duty construction machinery transmissions, specifically the WG180 and WG200 series. It also appears in select WG160 and WG210 variants where the housing-to-axle interface requires a high-strength stud. It is a direct replacement for the original equipment fastener and is not interchangeable with standard bolts due to its specific thread runout and underhead radius. Always verify the stud length against your existing 0636103300: STUD for correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098117002 | HOUSING | Main transmission casing, provides structural support |
| 2098301052 | REAR AXLE HOUS. | Houses differential and final drive components |
| 0636103300 | STUD | Alternative length stud for different stack-ups |
| 0637101164 | HEXAGON NUT | Mating nut for stud, provides clamping force |
| 0636102566 | STUD | Shorter stud variant for adjacent mounting points |
| 0636100960 | STUD | Longer stud variant for deep housing flanges |
| 0637101167 | HEXAGON NUT | Lock nut for high-vibration environments |
| 0634303044 | O-RING | Seals the stud bore against oil leakage |
| 2098317013 | BRAKE HOUSING | Encloses wet brake system, mounts via studs |
| 2098317028 | BRAKE HOUSING | Alternate brake housing casting variant |
