Overview
The ZF 4646.124.006 TEMPERATURE SENSOR is a critical electronic component engineered specifically for the WG260, WG261, WG310, WG311, and WG94 series transmissions. This OEM genuine part monitors the thermal condition of the transmission fluid, sending real-time data to the control unit to regulate shift timing and clutch pressure. Positioned within the valve body or sump area, the sensor ensures the transmission operates within its optimal temperature window. The SKU 4646.124.006 is a direct replacement for the original factory unit, guaranteeing precise signal output and long service life. When paired with a robust TRANSMISSION HOUSING, this sensor helps maintain consistent hydraulic performance under heavy loads.
Symptoms of Failure
- Erratic shifting or delayed engagement: A failing temperature sensor sends incorrect data, causing the transmission to shift too early or too late, especially during cold starts.
- Transmission overheating without warning: When the sensor fails, the control unit may not trigger cooling measures, leading to gradual overheating and fluid degradation.
- Check engine or transmission warning light: The ECU logs a temperature sensor circuit fault, often accompanied by reduced power mode to protect internal components.
- Harsh or slipping gear changes: Incorrect temperature readings alter line pressure, resulting in jarring shifts or momentary loss of drive in the WG260 series.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4646.124.006 |
| Material | Brass housing with stainless steel probe |
| Weight | 0.08 kg (0.18 lbs) |
| Thread Size | M14 x 1.5 |
| Temperature Range | -40°C to +150°C (-40°F to +302°F) |
| Connector Type | 2-pin AMP Junior Timer |
| OEM Reference | ZF 4646.124.006 |
Compatibility
This temperature sensor is designed for ZF WG-series transmissions, including the WG180, WG200, WG260, WG261, WG310, WG311, and WG94 models. It fits both standard and high-torque variants used in construction, agricultural, and material handling equipment. The sensor is also compatible with earlier WG92 and WG120 series when the correct adapter harness is used. For proper installation, ensure the mating surface is clean and use a new O-RING to prevent fluid leaks. The sensor works in conjunction with the COVER assembly, which protects the wiring harness from debris and vibration.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101173 | TRANSMISSION HOUSING | Main structural casing for gear assembly |
| 4646301349 | COVER | Protects internal components from contaminants |
| 0636115293 | 螺栓 | Fastener for housing and cover attachment |
| 0736300232 | 螺栓 | High-strength bolt for transmission mounting |
| 4475280208 | SCREW PLUG | Seals oil passages during service |
| 0634316523 | O-RING | Prevents fluid leaks at sensor interface |
| 0630361026 | SEALING CAP | Covers unused sensor ports |
| 0501214611 | 齿轮泵 | Hydraulic pump for fluid circulation |
| 0634313945 | O形圈 | Seal for pump and valve body connections |
| 0501322532 | TEMPERATURE SENSOR | Alternate sensor variant for WG series |
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