Overview
This OEM genuine ZF 4656.183.312 LOOSE PARTS set is a critical service kit designed specifically for the WG 171 series transmission. It contains the essential fasteners, seals, and small hardware components required to secure and seal the main transmission housing assembly during a rebuild or overhaul. The SKU 4656.183.312 is typically installed in the rear section of the gearbox, ensuring that the TRANSMISSION HOUSING and the HOUS.FRONT SECT are properly mated without fluid leaks. Without this genuine loose parts kit, the structural integrity of the transmission is compromised, leading to premature wear of internal components.
Symptoms of Failure
When the components in the ZF 4656.183.312 kit begin to fail or are missing, operators will notice specific operational issues. Common failure symptoms include:
- External oil leaks at the housing seam: Worn or missing fasteners cause the HOUSING REAR PART to separate slightly, allowing transmission fluid to escape.
- Gear slipping under load: Loose housing sections can misalign the internal valve body, resulting in erratic hydraulic pressure and gear engagement failure.
- Vibration and abnormal noise: A loose SCREEN SHEET or TUBE can rattle inside the case, creating metallic grinding sounds during operation.
- Contamination ingress: Gaps in the housing allow dirt and moisture to enter, accelerating internal wear on clutches and bearings.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4656.183.312 |
| Material | Steel alloy with zinc plating (fasteners); Nitrile rubber (seals) |
| Weight | 0.85 kg (1.87 lbs) |
| OEM Reference | ZF 4656.183.312 (Genuine) |
| Compatible Fasteners | CAP SCREW (0636100803), CAP SCREW (0636100801), CAP SCREW (0636100160) |
| Sealing Components | O-RING (0634313514), CYLINDRICAL PIN (0631306816) |
Compatibility
This genuine ZF 4656.183.312 LOOSE PARTS kit is engineered for the WG 171 series but is also compatible with several other ZF transmission models that share the same housing architecture. It is commonly used in the WG 180, WG 200, and WG 150 series gearboxes. The kit is essential for any rebuild involving the TRANSMISSION HOUSING or the HOUS.FRONT SECT. Always verify your transmission model number before ordering to ensure correct fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing for the gearbox |
| 4656301066 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4656201015 | SCREEN SHEET | Filter screen for hydraulic fluid |
| 4656301037 | TUBE | Fluid passage tube inside the housing |
| 0634313514 | O-RING | Seals housing joints against leaks |
| 0636100803 | CAP SCREW | Fastens housing sections together |
| 4656301042 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing assembly |
| 0636100801 | CAP SCREW | Fastener for valve body mounting |
| 0636100160 | CAP SCREW | Fastener for oil pan attachment |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my ZF WG171 instead of buying the 4656.183.312 kit?
A: Reusing old fasteners is not recommended. The OEM genuine 4656.183.312 kit includes new cap screws and seals that meet exact torque specifications. Old hardware can stretch or corrode, leading to oil leaks and gear slipping.
Q: Is this kit compatible with the ZF WG180 transmission?
A: Yes, the 4656.183.312 LOOSE PARTS kit is designed for the WG 171 series but is also compatible with the WG 180, WG 200, and WG 150 models. Always cross-reference your transmission serial number to confirm fitment.
Q: What other parts should I replace when installing this kit?
A: It is best practice to replace the O-RING (0634313514) and the CYLINDRICAL PIN (0631306816) simultaneously to ensure a leak-free assembly.
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Phone: +86 158 2286 3467 |
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