Overview
The ZF 4646.183.285 PIEZAS SUELTAS is a critical OEM loose part assembly designed for the WG310 transmission series, commonly deployed in heavy construction machinery such as wheel loaders and graders. This genuine ZF component functions as a precision-machined internal spacer or bushing kit, ensuring correct axial clearance and hydraulic flow within the transmission’s valve body and clutch pack assembly. The SKU 4646.183.285 is manufactured to original factory tolerances, guaranteeing seamless integration with existing ZF systems. When installing this part, it is essential to pair it with the correct 0636115293 螺栓 and 0736300232 螺栓 to secure the housing, as well as the 4475280208 SCREW PLUG for sealing oil passages. Additionally, the 0634316523 O-RING must be replaced concurrently to prevent fluid bypass.
Symptoms of Failure
- Delayed gear engagement under load: Worn 4646.183.285 components cause insufficient hydraulic pressure buildup, leading to sluggish shifting when the machine is under heavy load.
- Intermittent transmission slipping: As the loose parts degrade, internal clearances increase, resulting in random clutch pack slippage during acceleration or incline operation.
- External oil seepage near the valve block: Deterioration of the sealing surfaces allows ATF to escape, often visible as drips around the transmission casing or bell housing.
- Metallic debris in transmission fluid: Advanced wear of the part generates fine metal particles, which can be detected during routine oil changes and indicate imminent failure.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4646.183.285 |
| Material | Hardened alloy steel with anti-corrosion coating |
| Weight | 0.45 kg (approx.) |
| Dimensions | 85 mm x 45 mm x 12 mm (L x W x H) |
| OEM Reference | ZF 4646.183.285 (Original Equipment) |
| Thread Type | Metric fine pitch (M8 x 1.0) |
Compatibility
This OEM part is specifically engineered for the ZF WG310 transmission series, which powers a wide range of construction machinery. Based on its design and application, the 4646.183.285 is also compatible with the following ZF models: WG180, WG200, WG250, and WG310. It is commonly used in brands such as Liebherr, Volvo, and Caterpillar equipment that utilize these ZF transmissions. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636115293 | 螺栓 | Secures valve block to transmission housing |
| 0736300232 | 螺栓 | Fastens clutch pack retaining plate |
| 4475280208 | SCREW PLUG | Seals hydraulic test ports |
| 0634316523 | O-RING | Prevents fluid leaks at joint interfaces |
| 4656306171 | VALVE BLOCK | Directs hydraulic flow to clutches |
| 4656306190 | CONNECTING HOUSING | Links transmission to torque converter |
| 0501213997 | PRESSURE REGULATOR | Controls main system hydraulic pressure |
| 0736300094 | TORX SCREW | High-torque fastener for valve body |
| 4475280047 | SCREW-IN SLEEVE | Provides threaded insert for wear-prone areas |
| 0634306010 | O形圈 | Seals oil cooler line connections |
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