Overview
The ZF 2093.310.140 CYLINDER is a precision-machined hydraulic actuation component engineered for the clutch and differential lock systems within heavy-duty ZF transmissions. This OEM genuine part, identified by SKU 2093.310.140, sits directly within the transmission valve body or housing, converting hydraulic pressure into linear mechanical force to engage or disengage gear sets. As a critical sealing and actuation element, it ensures precise oil flow control and consistent pressure application. For optimal assembly integrity, this cylinder is frequently installed alongside the 2093109024: DIFFERENTIAL and the 2093209095: DIFFERENTIAL unit to manage torque distribution.
Symptoms of Failure
- Hydraulic oil seepage around the transmission housing: A worn cylinder seal allows pressurized ATF to escape, leaving visible drips or wet spots on the casing.
- Delayed or harsh gear engagement: When the cylinder fails to build adequate pressure, shifts become sluggish or produce a jarring clunk, especially under load.
- Intermittent loss of differential lock function: The cylinder may stick in a partially engaged position, causing erratic wheel spin or reduced traction in construction machinery.
- Erratic clutch modulation: Operators may notice surging or slipping during low-speed maneuvering as the cylinder fails to maintain consistent hydraulic feedback.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 2093.310.140 |
| OEM Reference | ZF 2093.310.140 |
| Material | High-grade alloy steel with hardened chrome bore |
| Overall Length | 185 mm (estimated) |
| Outer Diameter | 45 mm (estimated) |
| Bore Diameter | 32 mm (estimated) |
| Weight | 0.85 kg (1.87 lbs) |
| Seal Type | PTFE lip seal with O-ring backup |
| Operating Pressure | 12–18 bar (174–261 psi) |
Compatibility
This cylinder is designed for use in ZF WG180, WG200, and WG211 series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It also fits select ZF Ecolite and Ergopower variants used in construction machinery. For a complete rebuild, pair this cylinder with the 0750117075: TAPER ROLLER BEARING and the 2093309071: DIFF.HOUSING to ensure proper axial support and alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109024 | DIFFERENTIAL | Distributes torque between drive wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating shafts under axial loads |
| 2093209095 | DIFFERENTIAL | Secondary torque split assembly |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures linkage components |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Drives differential side gears |
| 5838300811 | THRUST WASHER | Controls end-play in gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with axle bevel gear |
Frequently Asked Questions
Q: Can I use this cylinder in a ZF WG180 transmission without modifying the valve body?
A: Yes, the 2093.310.140 cylinder is a direct OEM replacement for WG180, WG200, and WG211 series. No valve body modifications are required, though we recommend replacing the 0730300820: THRUST WASHER simultaneously to prevent premature wear.
Q: What causes the cylinder to leak oil externally?
A: The most common cause is degradation of the internal PTFE lip seal due to heat cycling or contamination. If the bore is scored, replacement of the cylinder is mandatory. Always inspect the 0631100223: SPRING PIN for corrosion during service.
Q: How do I verify the cylinder is functioning after installation?
A: Perform a pressure test at the transmission test port. The cylinder should hold 15 bar for 30 seconds without drop. Also confirm that the 4482360001: DIFFERENTIAL BEVEL GEAR rotates freely when the cylinder is de-energized.
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