Overview
This OEM genuine ZF 4657.183.126 LOOSE PARTS kit is a critical service component designed specifically for the WG 210 series transmission. It contains the essential fasteners, seals, and positioning elements required to secure internal assemblies within the gearbox housing. The SKU 4657.183.126 is typically installed during a major overhaul or when replacing the main casing, ensuring that all loose hardware meets factory torque and material specifications. Without this kit, the structural integrity of the transmission assembly is compromised, leading to misalignment of the TRANSMISSION HOUSING and adjacent components.
Symptoms of Failure
When the components within the 4657.183.126 LOOSE PARTS kit degrade or are missing, operators will notice distinct operational issues. Look for these specific failure symptoms:
- Oil leaks at the housing seam: Worn or missing fasteners cause the HOUS.FRONT SECT to separate slightly, allowing transmission fluid to weep under pressure.
- Gear slipping under load: Loose hardware allows the HOUSING REAR PART to shift, altering gear mesh clearances and causing intermittent power loss.
- Abnormal vibration or rattle: A missing CYLINDRICAL PIN allows internal shafts to drift, creating a distinct metallic chatter during deceleration.
- Hard shifting or delayed engagement: Improperly torqued loose parts prevent the valve body from seating correctly, leading to harsh or delayed gear changes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number (SKU) | 4657.183.126 |
| OEM Reference | ZF 4657.183.126 |
| Material Composition | Steel alloy / hardened carbon steel |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 30 mm |
| Compatible Series | WG 210 |
| Included Components | Bolts, pins, washers, retaining clips |
Compatibility
This genuine ZF 4657.183.126 LOOSE PARTS kit is engineered for the WG 210 transmission series. Based on its structural role, it is also compatible with the following ZF models that share the same housing architecture: WG180, WG200, WG210, and WG220. Always verify the exact housing variant before ordering, as the TRANSMISSION HOUSING casting may differ between early and late production units.
Related Components
These parts are frequently replaced together with the 4657.183.126 LOOSE PARTS during a full transmission rebuild. Ensure you inspect each component for wear.
| Part Number | Name | Function |
|---|---|---|
| 4657101031 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section of the transmission housing |
| 4657201020 | HOUSING REAR PART | Rear section of the transmission housing |
| 0631306792 | CYLINDRICAL PIN | Alignment pin for housing sections |
| 0636100801 | CAP SCREW | Fastener for housing flanges |
| 4656301148 | FIXING PLATE | Secures internal oil lines |
| 4657301032 | SCREEN SHEET | Fine mesh filter for oil sump |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | Fastener for valve body cover |
| 4681301040 | OIL FEED.HOUSG. | Oil feed tube housing assembly |
Frequently Asked Questions
Q: Can I reuse old bolts from the 4657.183.126 kit during a rebuild?
A: No. ZF specifies that all loose parts in this kit, including cap screws and pins, must be replaced with new OEM hardware to maintain proper clamp load and prevent fatigue failure.
Q: Does this kit include the gaskets for the housing sections?
A: No. The 4657.183.126 LOOSE PARTS kit contains only metal fasteners and pins. You must order separate gasket sets for the HOUS.FRONT SECT and HOUSING REAR PART.
Q: How do I verify the correct torque for the bolts in this kit?
A: Refer to the ZF WG210 service manual. Typical torque values for the M8 cap screws in this kit range from 25 to 30 Nm. Always use a calibrated torque wrench.
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Phone: +86 158 2286 3467 |
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