Overview
The ZF 2094.159.009 LASTSCHALTGR is an OEM genuine power shift clutch assembly, engineered for the demanding environment of construction machinery transmissions. This component, identified by SKU 2094.159.009, functions as a load-shifting element within the planetary gear set, enabling seamless gear changes under full torque. It sits directly inside the main transmission housing, interfacing with the hydraulic control unit to engage and disengage specific gear ratios. For a complete rebuild, this clutch assembly must be paired with a structurally sound 2094101012: TRANSMISSION HOUSING to ensure correct alignment and oil flow.
Symptoms of Failure
When the ZF 2094.159.009 wears out, operators will notice distinct performance degradation. Look for these specific failure symptoms:
- Delayed or harsh gear engagement – The transmission hesitates before shifting or slams into gear, indicating worn clutch plates or piston seals.
- Transmission oil leaks – Fluid seeping from the bell housing area often points to a compromised clutch drum seal, requiring replacement of the 2094301036: HOUSING if cracked.
- Gear slipping under load – The engine revs increase without proportional vehicle speed, especially on inclines, signaling that the clutch pack can no longer hold torque.
- Burning smell from transmission fluid – Overheated oil due to clutch slippage produces a distinct acrid odor, often accompanied by dark, gritty fluid.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 2094.159.009 |
| OEM Reference | ZF LASTSCHALTGR |
| Material | Hardened steel clutch drum with sintered bronze friction plates |
| Weight | Approx. 4.2 kg (9.3 lbs) |
| Outer Diameter | 180 mm |
| Inner Diameter | 120 mm |
| Height | 65 mm |
| Seal Type | PTFE lip seal (use 0750111371: SHAFT SEAL for replacement) |
Compatibility
This load-shifting clutch is primarily designed for ZF’s heavy-duty powershift transmission series used in wheel loaders, dozers, and graders. It is compatible with the following ZF transmission models:
- WG180 – Common in 5-7 ton loaders
- WG200 – Used in 8-10 ton articulated trucks
- WG211 – Found in mid-size graders
- WG310 – Applied in large excavator drivetrains
During installation, ensure the 2094298057: HOUSING is free of scoring, and the 2094301071: COVER is torqued to factory specifications to prevent fluid bypass.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094101012 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 2094301036 | HOUSING | Intermediate clutch drum support |
| 2094298057 | HOUSING | Rear planetary carrier housing |
| 2094301071 | COVER | Seals clutch pack access port |
| 0750111371 | SHAFT SEAL | Prevents oil leakage at output shaft |
| 0634303085 | O-RING | Hydraulic circuit sealing |
| 2094301030 | GASKET | Flange sealing between housings |
| 0631306670 | CYLINDRICAL PIN | Alignment dowel for housing assembly |
| 0636011356 | HEXAGON SCREW | Fastener for clutch pack retention |
| 4475280060 | SCREW PLUG | Seals hydraulic test ports |
