Overview
The ZF 4143.000.132 2 HL 100 Hydrostatic Drive Assembly is a complete, fully assembled unit designed for precise power transmission in heavy-duty industrial drivetrains. This assembly integrates the hydrostatic motor and gear reduction directly into the transmission housing, providing smooth, variable-speed control for mobile equipment such as forklifts, telehandlers, and construction vehicles. The SKU 4143.000.132 is a direct OEM replacement for the HL 100 and HL 270 series, ensuring a seamless fit without modification. It sits at the core of the transmission, converting hydraulic pressure into mechanical torque to drive the wheels or tracks. For optimal sealing and structural integrity, this unit is typically paired with a 4143101014 HOUSING and a 4143301025 HOUSING, which enclose the rotating components and maintain fluid containment.
Symptoms of Failure
When the ZF 4143.000.132 hydrostatic drive assembly begins to fail, operators may notice several distinct performance issues. Oil leaks around the drive shaft seal are a common early indicator, often caused by worn O-rings or housing cracks. Erratic or jerky vehicle movement during acceleration or deceleration signals internal wear in the hydrostatic pump or motor. Complete loss of drive or inability to hold position on an incline points to internal bypassing of hydraulic fluid, often due to a failing throttle valve. Excessive noise—whining or grinding—during operation suggests bearing degradation or metal contamination in the hydraulic circuit. Addressing these symptoms promptly with a new 4143.000.132 assembly prevents secondary damage to the 0634313603 O-RING and the 4475280018 SCREW PLUG.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4143.000.132 |
| Series | HL 100 / HL 270 |
| Type | Hydrostatic Drive Assembly (Complete Unit) |
| Overall Length | ~320 mm |
| Overall Width | ~210 mm |
| Overall Height | ~180 mm |
| Dry Weight | ~14.5 kg (32 lbs) |
| Housing Material | High-Grade Cast Iron |
| Seal Material | Nitrile Rubber (NBR) |
| Max Operating Pressure | 250 bar (3625 psi) |
| OEM Reference | ZF 4143.000.132 |
Compatibility
This hydrostatic drive assembly is engineered for ZF transmissions in the WG series and related industrial drivelines. It is a direct fit for the following models: WG180, WG200, WG210, and WG250. It also integrates with the HL 100 and HL 270 series hydrostatic units commonly found in ZF’s modular transmission systems. When replacing this assembly, always inspect the 4143298457 SEAL KIT and 0501342341 SUPPORT RING to ensure complete sealing integrity. For throttle control restoration, the 4143221014 THROTTLE VALVE is a recommended companion part.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101014 | HOUSING | Encloses and supports the drive assembly |
| 4143301025 | HOUSING | Secondary housing for gear reduction |
| 0634313603 | O-RING | Seals fluid passages between housings |
| 4475280018 | SCREW PLUG | Closes hydraulic ports for maintenance |
| 0501342341 | SUPPORT RING | Provides axial support for rotating shafts |
| 4143298457 | SEAL KIT | Contains all seals for complete rebuild |
| 0634313591 | O-RING | Seals the drive shaft output port |
| 0636101068 | CAP SCREW | Fastens housing halves together |
| 4143221014 | THROTTLE VALVE | Controls hydraulic flow for speed regulation |
| 0634313164 | O-RING | Seals the throttle valve connection |
