Overview
The ZF 2093.248.021 TUBE is a precision-engineered hydraulic fluid conduit designed for the lubrication and cooling circuits within heavy-duty ZF construction machinery transmissions. This OEM genuine part, identified by SKU 2093.248.021, routes pressurized oil to critical bearing surfaces and gear meshes inside the transmission housing. It is typically positioned between the main valve body and the differential carrier assembly, ensuring consistent oil flow to prevent thermal degradation. When paired with a 2093109002: DIFFERENTIAL, this tube maintains the hydraulic integrity required for sustained heavy-load operations.
Symptoms of Failure
- External oil seepage at tube connections: A worn or cracked 2093.248.021 tube often causes visible oil drips beneath the transmission bell housing, especially after extended idle periods.
- Intermittent gear slipping under load: Restricted oil flow through a collapsed or blocked tube leads to insufficient clutch pack pressure, resulting in hesitation during grade climbs.
- Elevated transmission operating temperatures: A compromised tube disrupts the oil cooler circuit, causing the transmission to run 15-20°F hotter than normal during routine operation.
- Whining noise from differential area: Starvation of lubricant to the 0750117075: TAPER ROLLER BEARING due to tube failure produces a distinct high-pitched whine that increases with vehicle speed.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.248.021 |
| Material | Seamless cold-drawn steel with zinc-nickel plating |
| Overall Length | 312 mm (12.28 in) |
| Outer Diameter | 18.5 mm (0.73 in) |
| Wall Thickness | 2.0 mm (0.079 in) |
| Weight | 0.42 kg (0.93 lbs) |
| OEM Reference | ZF 2093.248.021 |
| Seal Type | O-ring groove both ends (O-ring not included) |
Compatibility
This tube is engineered for ZF WG-series powershift transmissions commonly found in wheel loaders and graders. It is a direct fit for the WG180, WG200, and WG211 models produced between 2008 and 2022. The part also integrates with the 2093209095: DIFFERENTIAL assembly in WG200 variants and the 2093309071: DIFF.HOUSING used in later WG211 units. 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 pinion shaft |
| 2093209095 | DIFFERENTIAL | Secondary torque split unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gears |
| 0631100223 | SPRING PIN | Secures shift fork to rail |
| 0730300820 | THRUST WASHER | Reduces axial play in gear sets |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Carries differential side gears |
| 5838300811 | THRUST WASHER | Controls end float in planetary sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with pinion for speed reduction |
Frequently Asked Questions
Q: Can a damaged 2093.248.021 tube cause complete transmission failure?
A: Yes. A ruptured tube can rapidly drain the transmission of oil, leading to catastrophic bearing seizure and gear scoring within minutes of operation.
Q: Is this tube interchangeable between WG180 and WG200 transmissions?
A: The tube is physically identical for both models, but the bend radius differs slightly for WG200 units equipped with the 2093209095 differential. Always compare the original tube contour.
Q: What torque specification applies to the tube fittings?
A: ZF recommends 35 Nm (26 ft-lbs) for the banjo bolt connections. Over-torquing can distort the tube sealing surface.
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Phone: +86 158 2286 3467 |
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