Overview
The ZF 4656.183.200 LOOSE PARTS for WG94 is a critical OEM genuine component designed to maintain the precise hydraulic and mechanical integrity of the WG 94 Series transmission. This assembly-specific kit includes the necessary loose hardware and sealing elements that secure internal pressure circuits and prevent fluid bypass within the valve body section. The SKU 4656.183.200 is engineered to interface directly with the main control housing, ensuring that all fasteners and spacers meet ZF’s exact torque and tolerance specifications. Without this loose parts set, the transmission’s shift timing and clutch application pressures become unpredictable, leading to degraded performance in heavy-duty industrial applications.
Symptoms of Failure
- Intermittent gear slippage under load: When the 4656.183.200 loose parts degrade, internal fasteners can loosen, causing pressure loss to clutches and resulting in erratic gear holding during high-torque operations.
- External oil seepage at valve body joints: Worn sealing elements within this kit allow transmission fluid to escape, leaving visible drips on the housing and reducing overall hydraulic efficiency.
- Delayed or harsh shift engagement: A failing loose parts assembly disrupts the precise alignment of the 6073003011: CONTROL UNIT, leading to sluggish or abrupt gear changes that worsen over time.
- Increased operating noise from the transmission: Loose hardware can cause vibration and rattling within the 4661101033: HOUSING, indicating imminent mechanical failure if not addressed promptly.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.183.200 |
| OEM Reference | ZF WG94 Series |
| Material Composition | Hardened steel with corrosion-resistant coating |
| Estimated Weight | 0.45 kg (1.0 lb) |
| Package Dimensions | 120 mm x 80 mm x 30 mm |
| Compatible Fastener Torque | 12-15 Nm (per ZF spec) |
Compatibility
This genuine loose parts kit is specifically designed for the ZF WG 94 transmission series, which includes models such as the WG180, WG200, and WG94 variants used in off-highway vehicles and industrial machinery. The 4656.183.200 set works in conjunction with the 4661301096: HOUSING and the 0631306174: CYLINDRICAL PIN to ensure proper alignment of the control unit. It is not interchangeable with earlier WG series transmissions without verifying the housing bore dimensions. Always confirm your transmission’s serial number against ZF’s compatibility chart before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 6073003011 | CONTROL UNIT | Manages hydraulic valve actuation for shift scheduling |
| 4661101033 | HOUSING | Encloses the valve body and supports internal pressure circuits |
| 4661301096 | HOUSING | Secondary housing for clutch pack retention |
| 0631306174 | CYLINDRICAL PIN | Aligns housing sections during assembly |
| 0769123894 | TYPE PLATE | Identification plate with transmission model details |
| 0750100022 | SCREW PLUG | Seals fluid passages in the valve body |
| 4660201008 | SCREW PLUG | High-pressure port sealing plug |
| 0636100117 | SCREW PLUG | Low-pressure drain port plug |
| 0501211384 | VALVE | Regulates oil flow to clutch circuits |
| 0732042156 | COMPRESSION SPRING | Provides return force for valve spools |
