Overview
The ZF 2094.313.049 PRESSURE RING is a critical OEM genuine component engineered for precise hydraulic control within ZF powershift transmissions. This pressure ring functions as a sealing and pressure-directing element, ensuring that clutch packs and shift valves receive the correct oil pressure for smooth gear engagement. Positioned directly on the main shaft assembly, it works in concert with the 2094104412: MAIN SHAFT to maintain consistent hydraulic force during high-torque operations. The SKU 2094.313.049 is a direct OEM replacement, guaranteeing factory tolerances and material integrity for construction machinery applications.
Symptoms of Failure
- Delayed or harsh gear engagement: A worn pressure ring allows hydraulic fluid to bypass, causing sluggish shifts or abrupt clutch application.
- Internal transmission oil leaks: Degraded sealing surfaces lead to fluid migration between circuits, visible as low oil levels or puddling under the bell housing.
- Intermittent gear slipping under load: When the ring loses its dimensional stability, clutch pack pressure drops, resulting in power loss during excavation or lifting.
- Erratic shift quality in cold conditions: As the ring material fatigues, thermal expansion mismatches cause inconsistent hydraulic response during startup.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 2094.313.049 |
| Material | Hardened alloy steel with nitrided surface |
| Outer Diameter | 89.5 mm (est.) |
| Inner Diameter | 72.0 mm (est.) |
| Thickness | 4.2 mm (est.) |
| Weight | 0.18 kg (est.) |
| OEM Reference | ZF 2094.313.049 |
Compatibility
This pressure ring is designed for ZF powershift transmissions commonly used in wheel loaders, telehandlers, and graders. It is a direct fit for the WG180 and WG200 series, as well as the 4WG-200 and 6WG-200 variants. The ring interfaces with the 2094304054: MAIN SHAFT and the 2094106010: SHIFT SYSTEM assembly. For proper installation, it must be paired with the 2094206001: GEARSHIFT SHAFT to ensure concentric alignment of the hydraulic circuits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers torque from engine to gear sets |
| 2094304054 | MAIN SHAFT | Alternate spline configuration for WG200 |
| 2094106010 | SHIFT SYSTEM | Controls clutch pack engagement sequence |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift lever motion to valves |
| 2094306053 | GEARSHIFT SHAFT | Longer variant for 6-speed transmissions |
| 0630513070 | SNAP RING | Secures pressure ring in axial position |
| 2094306019 | WASHER | Provides thrust surface for rotating components |
| 0732040444 | COMPRESSION SPRING | Maintains preload on shift rail detents |
| 0732040728 | COMPRESSION SPRING | Higher rate spring for heavy-duty applications |
| 2093206001 | BUSH | Reduces friction on gearshift shaft journals |
Frequently Asked Questions
Q: Can I reuse the old snap ring when installing the 2094.313.049 pressure ring?
A: No. The snap ring (part 0630513070) should always be replaced to ensure proper axial retention and prevent ring migration under hydraulic pressure.
Q: What torque specification applies to the gearshift shaft when reassembling?
A: For the 2094206001: GEARSHIFT SHAFT, use 45 Nm + 90° turn. Always consult the ZF service manual for your specific transmission model.
Q: Does this pressure ring fit the ZF 4WG-180 transmission?
A: Yes. The 2094.313.049 is compatible with both WG180 and WG200 series, including the 4WG-180 and 6WG-200 variants. Verify your main shaft part number against 2094104412 or 2094304054 for confirmation.
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