Overview
The ZF 0501.317.212 WASHER is an OEM genuine thrust washer engineered for precise axial load management within heavy-duty construction machinery transmissions. This critical component sits between rotating gear sets and stationary housings, preventing metal-on-metal contact that would otherwise lead to premature wear. As a factory-spec part, the SKU 0501.317.212 ensures exact dimensional tolerances required for maintaining proper gear mesh alignment and hydraulic pressure integrity. When installed alongside a 4108101140: HOUSING, this washer forms a sealed boundary that protects internal assemblies from contamination.
Symptoms of Failure
- Transmission oil seepage at housing joints: A worn 0501.317.212 washer allows pressurized fluid to bypass the seal, leaving visible drips under the bell housing during operation.
- Intermittent gear slipping under load: When the washer loses its original thickness, axial play increases, causing clutch packs to disengage momentarily during heavy excavation work.
- Metallic grinding noise during gear shifts: Failed washers permit direct contact between the 0501211694: MOTOR shaft and housing, producing a distinct high-pitched scraping sound.
- Elevated operating temperatures: Excessive friction from a collapsed washer generates heat that can be detected via infrared thermography near the output shaft area.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.317.212 |
| Material | Phosphor bronze with PTFE overlay |
| Outer Diameter | 72.0 mm |
| Inner Diameter | 58.5 mm |
| Thickness | 2.5 mm |
| Weight | 0.045 kg |
| OEM Reference | ZF 0501.317.212 |
| Hardness | HRB 85-95 |
Compatibility
This washer is a standard fitment in ZF WG180, WG200, and WG210 series transmissions commonly used in wheel loaders, telehandlers, and graders. It also appears in select ZF Ecomat 4HP and 5HP models where a 0501314793: COVER assembly requires axial thrust support. For planetary gear sets using a 0501314799: BUSH, this washer serves as the primary wear surface between rotating and stationary components. Always verify your transmission serial number against ZF parts catalogs before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101140 | HOUSING | Encloses transmission gear train |
| 0501211694 | MOTOR | Hydraulic drive unit |
| 0501314793 | COVER | Seals clutch pack assembly |
| 0501314799 | BUSH | Guides rotating shaft |
| 0735370299 | TAPERED ROLLER BEARING | Supports radial and axial loads |
| 0501317874 | HOUSING | Secondary housing for planetary set |
| 0501317875 | ROLLER | Reduces friction in bearing race |
| 0501209497 | PISTON | Activates clutch engagement |
| 0501317876 | COMPRESSION SPRING | Returns piston to neutral |
| 0501314823 | BUSH | Wear sleeve for output shaft |
