Overview
The ZF 4656.301.018 FIXING PLATE is a precision-engineered OEM genuine component designed for the WG210 series of powershift transmissions. This plate functions as a critical locating and retention element within the transmission housing assembly, ensuring that internal shafts and gear clusters remain in precise axial alignment under high torque loads. The SKU 4656.301.018 is manufactured to ZF’s exacting tolerances, providing a secure mounting surface that prevents unwanted movement of adjacent assemblies. This fixing plate is typically positioned between the HOUS.FRONT SECT and the HOUSING REAR PART, where it interfaces directly with the main TRANSMISSION HOUSING to maintain structural integrity.
Symptoms of Failure
When the ZF 4656.301.018 fixing plate wears or becomes damaged, operators may notice several distinct failure modes. Transmission oil seepage around the housing joint is a common early indicator, as a warped plate compromises the sealing surface. Intermittent gear slipping under load can occur when the plate no longer holds the shaft bearings in their correct position. Abnormal metallic rattling from the bell housing area often signals that the fixing plate has loosened, allowing components to vibrate against each other. Difficulty engaging forward or reverse gears may also develop if the plate’s locating dowels have sheared, shifting the entire gear train out of alignment.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.301.018 |
| Material | High-strength carbon steel (C45E) with zinc-nickel plating |
| Overall Length | 185 mm |
| Overall Width | 95 mm |
| Thickness | 8 mm |
| Bolt Hole Diameter | 12.5 mm (4 positions) |
| Weight | 0.42 kg |
| OEM Reference | ZF 4656.301.018 |
| Hardness | HRC 28-32 |
Compatibility
This fixing plate is primarily designed for the ZF WG210 series, but it also shares mounting dimensions with several other ZF powershift models. Compatible transmissions include the WG180, WG200, WG210, and WG220 series. It is also suitable for certain variants of the WG150 and WG250 when used with the appropriate CYLINDRICAL PIN kit. Always verify the bolt pattern against your existing plate before installation, as minor revisions exist between early and late production runs.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101046 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4657201028 | HOUS.FRONT SECT | Forward section of the transmission housing |
| 4657201021 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Fastener for fixing plate retention |
| 4656301148 | FIXING PLATE | Alternate variant for earlier WG series |
| 4657301034 | SCREEN SHEET | Oil filter mesh for sump protection |
| 4657301035 | SCREEN SHEET | Fine mesh screen for hydraulic circuit |
| 0636100803 | CAP SCREW | Longer fastener for housing through-bolts |
| 0750301003 | OIL FEED.HOUSG. | Lubrication supply manifold |
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