Overview
The ZF 0501.314.651 INTERMEDIATE WASHER is a precision-engineered OEM genuine component designed to maintain correct axial clearance and load distribution within ZF construction machinery transmissions. Positioned between the main shaft and gear assemblies, this hardened steel washer prevents metal-to-metal contact and ensures smooth torque transfer under heavy loads. The SKU 0501.314.651 is a critical spacer that supports the alignment of the 2094104412: MAIN SHAFT and the 2094304054: MAIN SHAFT assemblies, reducing vibration and extending service intervals in demanding off-highway applications.
Symptoms of Failure
- Transmission gear slipping under load: A worn intermediate washer allows excessive end-play, causing the 2094106010: SHIFT SYSTEM to lose engagement precision, resulting in intermittent power loss during operation.
- Metallic grinding noise from the gearbox: When the washer surface degrades, hardened debris contaminates the oil, creating audible scraping sounds that worsen with acceleration.
- Oil contamination with metallic particles: Flaking material from a failed intermediate washer circulates through the hydraulic circuit, clogging filters and accelerating wear on the 2094206001: GEARSHIFT SHAFT.
- Hard shifting or gear lockout: Excessive axial movement misaligns the shift forks, making gear changes stiff or impossible, particularly in WG-series transmissions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.314.651 |
| Material | Hardened Alloy Steel (C45E + surface treatment) |
| Outer Diameter | 68.0 mm (est.) |
| Inner Diameter | 42.0 mm (est.) |
| Thickness | 3.5 mm (est.) |
| Weight | 0.045 kg (approx.) |
| OEM Reference | ZF 0501.314.651 |
| Surface Hardness | HRC 58-62 |
Compatibility
This intermediate washer is primarily used in ZF WG180, WG200, and WG211 series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It also fits select ZF 4WG-200 and 6WG-200 variants. Always verify the part number 0501.314.651 against your transmission’s parts manual, as washer thickness tolerances are critical for proper preload on the 2094106010: SHIFT SYSTEM assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from engine to gear cluster |
| 2094304054 | MAIN SHAFT | Secondary shaft for output speed reduction |
| 2094106010 | SHIFT SYSTEM | Controls clutch pack engagement |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift lever motion to forks |
| 2094306053 | GEARSHIFT SHAFT | Alternate length shaft for WG200 variants |
| 0630513070 | SNAP RING | Secures shaft bearings in housing bore |
| 2094306019 | WASHER | Thrust washer for gear end-play adjustment |
| 0732040444 | COMPRESSION SPRING | Provides detent force for shift rail |
| 0732040728 | COMPRESSION SPRING | Heavy-duty spring for high-torque applications |
| 2093206001 | BUSH | Wear sleeve for shift shaft support |
Frequently Asked Questions
Q: Can I reuse the 0501.314.651 washer during a rebuild?
A: No. This intermediate washer is a single-use component. Even minimal wear alters the axial clearance, leading to premature failure of the 2094106010: SHIFT SYSTEM. Always replace with a new OEM genuine part.
Q: How do I know if the washer thickness is correct for my transmission?
A: Measure the end-play of the main shaft assembly using a dial indicator. The 0501.314.651 washer typically provides 0.10–0.25 mm clearance. If play exceeds 0.40 mm, the washer and the 2094304054: MAIN SHAFT should be inspected together.
Q: Is this part compatible with ZF 4WG-200 transmissions?
A: Yes, the 0501.314.651 is commonly used in 4WG-200 and 6WG-200 series. However, always cross-reference your transmission serial number, as some early models used a different washer thickness.
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