Overview
The ZF 0630.305.515 SPRING WASHER is a precision-engineered OEM genuine component designed for the WG100, WG130, and WG131 transmission series. This critical fastener element sits within the differential assembly, providing consistent axial tension to maintain proper gear mesh and bearing preload. The SKU 0630.305.515 specifically functions as a load-distributing washer that absorbs vibration and thermal expansion between mating surfaces. Without this spring washer, the differential housing cannot maintain the precise clamping force required for long-term durability under heavy torque loads.
Symptoms of Failure
- Transmission gear whine under load – When the spring washer loses its temper, gear mesh clearance increases, producing a distinct whining noise during acceleration.
- Differential bearing knock on deceleration – A worn 0630.305.515 allows the 0750117075 TAPER ROLLER BEARING to shift, causing audible knocking when the vehicle slows.
- Oil seepage from axle housing seals – Reduced spring tension creates housing flex, forcing lubricant past the 2093309071 DIFF.HOUSING seals.
- Intermittent gear slipping in WG transmissions – Loss of preload on the 2093109002 DIFFERENTIAL assembly causes momentary power loss under heavy torque.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 0630.305.515 |
| Inner Diameter | 30.5 mm |
| Outer Diameter | 51.5 mm |
| Thickness (Free) | 3.0 mm |
| Material | Spring Steel (DIN 17221) |
| Surface Treatment | Zinc-Nickel Plated |
| Weight | 0.042 kg |
| Hardness | 44-48 HRC |
| Compatible Fastener | 0631100223 SPRING PIN |
Compatibility
This spring washer is engineered for ZF WG-series transmissions including WG100, WG130, and WG131 models. It also applies to select WG180 and WG200 variants where the differential assembly uses the same preload specification. The part integrates directly with the 2093209095 DIFFERENTIAL unit and the 2097309085 DIFFERENTIAL AXLE assembly. Always verify your transmission serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports differential rotation |
| 2093209095 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures spring washer in position |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheels |
| 5838300811 | THRUST WASHER | Controls gear end-play |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can I reuse the 0630.305.515 spring washer during a rebuild?
A: No. This is a single-use tension component. Reusing a compressed spring washer will result in incorrect preload on the differential bearings, leading to premature failure of the 0750117075 TAPER ROLLER BEARING.
Q: What torque specification applies when installing this washer?
A: The retaining nut should be torqued to 180 Nm, then rotated an additional 30 degrees. Always replace the 0631100223 SPRING PIN simultaneously.
Q: Does this part fit the ZF WG180 transmission?
A: Yes, the 0630.305.515 is compatible with WG180 models that use the 2093209095 DIFFERENTIAL assembly. Verify your housing casting number against the 2093309071 DIFF.HOUSING specifications.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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