Overview
The ZF 4656.183.382 LOOSE PARTS set is a critical OEM genuine service kit designed specifically for the WG 171 series transmission. This assembly contains the essential small components—including seals, fasteners, and positioning elements—that secure and seal the internal hydraulic circuits and mechanical interfaces within the gearbox. The SKU 4656.183.382 is typically deployed during a major overhaul or when replacing the TRANSMISSION HOUSING or the HOUS.FRONT SECT. Without this loose parts kit, reassembly of the transmission is incomplete, leading to immediate fluid loss or mechanical misalignment.
Symptoms of Failure
When the components within the 4656.183.382 kit degrade, operators will notice distinct operational issues. Look for these specific failure symptoms to identify a worn loose parts set:
- External oil seepage at housing joints: Worn seals and gaskets from this kit cause transmission fluid to weep from the mating surfaces of the HOUS.FRONT SECT and the main casing.
- Intermittent gear slippage under load: Damaged retaining pins or bolts allow internal components to shift slightly, disrupting clutch pack engagement and causing erratic power delivery.
- Contaminated fluid with metallic debris: A loose SCREEN SHEET within the kit can fail to filter particles, allowing wear material to circulate through the valve body.
- Unusual rattling or vibration from the bell housing: Missing or fatigued fasteners from this loose parts set allow the TUBE assembly to vibrate against the casing.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4656.183.382 |
| Kit Contents | Seals, gaskets, retaining rings, positioning pins, fasteners |
| Material Composition | Steel, nitrile rubber, aluminum |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Application Series | WG 171 |
| OEM Reference | ZF Friedrichshafen AG |
Compatibility
This OEM genuine loose parts kit is engineered for the ZF WG 171 series transmission. Based on the part type and common ZF architecture, the 4656.183.382 is also compatible with the closely related WG 180 and WG 200 series gearboxes when used in conjunction with the correct TRANSMISSION HOUSING. It is not intended for use in older WG 120 or WG 150 models without verifying the housing interface dimensions. Always confirm your transmission serial number against the ZF parts catalog before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101072 | TRANSMISSION HOUSING | Main structural casing for the gear train |
| 4656301168 | HOUS.FRONT SECT | Front section housing for input shaft support |
| 4656201015 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301037 | TUBE | Hydraulic fluid passage conduit |
| 0634313514 | O-RING | Static seal for fluid connections |
| 0636100803 | CAP SCREW | Fastener for housing assembly |
| 4656301169 | HOUSING REAR PART | Rear casing section for output shaft |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing positioning |
| 0636100801 | CAP SCREW | Bolt for securing internal components |
| 0636100160 | CAP SCREW | Fastener for valve body attachment |
Frequently Asked Questions
Q: Can I reuse the old fasteners from my transmission instead of buying the 4656.183.382 kit?
A: No. ZF specifies that all bolts, O-rings, and seals in this loose parts kit are single-use items. Reusing them risks torque failure and fluid leaks, especially when mating the HOUS.FRONT SECT to the main housing.
Q: Does this kit include the O-ring for the tube assembly?
A: Yes. The 4656.183.382 set contains the necessary seals for the TUBE connection. However, if you need a standalone replacement, order part 0634313514 separately.
Q: How do I know if my WG 171 needs this specific loose parts kit?
A: If you are replacing the TRANSMISSION HOUSING or the HOUSING REAR PART, this kit is mandatory. It provides all the small components that are not included with the larger castings.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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