Overview
The ZF 0736.029.107 ANTI-FATIGUE BOLT is a critical fastening component engineered specifically for the WG 65 series transmission assembly. This OEM genuine part is designed to secure the 4616105413: OUTPUT and 4616203017: OUTPUT FLANGE within the drivetrain, preventing loosening under high-torque cyclic loads. The SKU 0736.029.107 is precision-machined to maintain clamp force over extended service intervals, reducing the risk of joint separation in heavy-duty industrial applications.
Symptoms of Failure
- Oil seepage at the output flange interface: A worn anti-fatigue bolt can cause micro-gaps, leading to transmission fluid leaks around the OUTPUT FLANGE.
- Abnormal gear slippage or delayed engagement: Loss of bolt preload allows the OUTPUT shaft to shift axially, disrupting gear mesh.
- Audible clunking during load changes: Fatigue failure creates play between the 4616101117: TRANSMISSION HOUSING and output assembly, producing metallic noise.
- Vibration at the driveline coupling: Uneven bolt tension leads to rotational imbalance, detectable at the PTO or wheel end.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0736.029.107 |
| Material | High-tensile alloy steel (10.9 grade) |
| Thread Size | M16 x 1.5 |
| Length | 85 mm |
| Head Type | Hexagon (flanged) |
| Weight | 0.12 kg |
| OEM Reference | ZF 0736.029.107 |
| Surface Treatment | Zinc-nickel plating (anti-corrosion) |
Compatibility
This anti-fatigue bolt is designed for the ZF WG 65 series, but it also fits select WG 180, WG 200, and WG 250 transmissions when used with the correct 0636011038: HEXAGON SCREW and 0636610082: STUD kits. Always verify bolt length against your specific housing depth. For WG 65 rebuilds, pair this bolt with a new 0634313118: O-RING to ensure a leak-free seal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4616105413 | OUTPUT | Transfers torque from gearset to flange |
| 4616203017 | OUTPUT FLANGE | Connects driveline to transmission |
| 4616101117 | TRANSMISSION HOUSING | Encloses gear train and bearings |
| 0636011038 | HEXAGON SCREW | Secures housing cover |
| 0636016015 | HEXAGON SCREW | Fastens output bearing retainer |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves |
| 0634313118 | O-RING | Seals output flange joint |
| 0732611049 | FILTER INSERT | Traps debris in oil circuit |
| 0634303718 | O-RING | Seals filter housing |
| 0636610082 | STUD | Provides threaded mounting for bolts |
