Overview
The ZF 4657.185.117 ACCESSORIES component is a critical mounting and alignment fixture within the WG 211 Series transmission assembly. This OEM genuine part ensures precise positioning of internal sub-assemblies, reducing vibration and maintaining correct gear mesh under heavy torque loads. The SKU 4657.185.117 is specifically engineered to interface with the main casing and front sections, acting as a stabilizing element that prevents axial movement during operation. Without this accessory, the transmission’s structural integrity is compromised, leading to premature wear on adjacent components such as the 4657101087: TRANSMISSION HOUSING and the 4657301172: HOUS.FRONT SECT.
Symptoms of Failure
- Transmission oil leaks near the housing joint: A worn 4657.185.117 accessory allows the 4657301173: HOUSING REAR PART to shift, breaking the seal and causing fluid seepage.
- Gear slipping under load: When this accessory loses its dimensional integrity, the 0631306816: CYLINDRICAL PIN can misalign, resulting in intermittent power loss during acceleration.
- Abnormal rattling or knocking from the bell housing: Loose fitment of the accessory creates play between the transmission housing and front section, producing metallic noise at idle.
- Difficult gear engagement: Misalignment caused by a degraded 4657.185.117 forces the shift forks to work harder, leading to grinding sensations when selecting gears.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4657.185.117 |
| Material | Hardened alloy steel (C45E + QT) |
| Weight | 0.42 kg (0.93 lbs) |
| Length | 85 mm |
| Width | 40 mm |
| Height | 12 mm |
| OEM Reference | ZF 4657.185.117 |
| Surface Treatment | Zinc-plated (ISO 2081) |
Compatibility
This accessory is designed for the ZF WG 211 Series, but it also fits the WG180, WG200, and WG250 transmission models due to shared housing architectures. It is a direct replacement for the OEM part in any ZF off-highway or industrial transmission that uses the same bolt pattern and locating dowels. Always verify the condition of the 4657101087: TRANSMISSION HOUSING and the 4657301172: HOUS.FRONT SECT before installation to ensure proper fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101087 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4657301172 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657301173 | HOUSING REAR PART | Rear casing for output assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636102489 | CAP SCREW | Fastener for accessory mounting |
| 4656301148 | FIXING PLATE | Secures accessory to housing |
| 0636102463 | CAP SCREW | Bolt for front section attachment |
| 4657201133 | SCREEN SHEET | Filter mesh for oil return |
| 0636115287 | CAP SCREW | Fastener for rear housing |
| 4657301065 | PLATE | Spacer plate for alignment |
