Overview
The ZF 0501.210.288 RANGE SELECTOR is a critical pneumatic or mechanical control component within the WG series countershaft transmissions. It governs the high/low range shift sequence, ensuring smooth engagement between the main box and the range section. This OEM genuine part, identified by SKU 0501.210.288, mounts directly onto the rear housing assembly and interfaces with the shift rail system. Proper function of this selector is essential for maintaining correct gear ratio selection under load. When paired with a robust TRANSMISSION HOUSING, the entire assembly maintains structural integrity during high-torque operations.
Symptoms of Failure
- Delayed or harsh range shifts: The transmission hesitates or clunks when shifting between high and low range, often accompanied by a grinding noise.
- Inability to engage a specific range: The vehicle may become stuck in either high or low range, refusing to shift out of that gear set.
- Air pressure leaks at the selector valve: Hissing sounds or gradual loss of pneumatic pressure indicate worn seals or a cracked selector body, leading to sluggish shift response.
- Intermittent neutral position: The selector fails to hold the neutral detent, causing unintended gear disengagement during operation.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.210.288 |
| Material | Die-cast aluminum alloy with hardened steel plunger |
| Weight | 0.85 kg (1.87 lbs) |
| Length | 145 mm |
| Width | 80 mm |
| Height | 55 mm |
| OEM Reference | ZF 0501.210.288 (Genuine) |
| Operating Pressure | 6.5 – 8.5 bar (pneumatic models) |
| Temperature Range | -40°C to +120°C |
Compatibility
This range selector is engineered for ZF WG series transmissions, specifically the WG130, WG160, WG190, and WG210 models. It also fits the WG180 and WG200 variants where the range housing interface matches the 0501.210.288 pattern. The selector integrates with the HOUS.FRONT SECT and the HOUSING REAR PART to create a sealed shift chamber. For complete rear section rebuilds, the HOUSING REAR SECTION provides the necessary mounting points for this selector. Always verify the shift fork configuration in your specific transmission before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101051 | TRANSMISSION HOUSING | Main structural casing for gear sets |
| 4656201055 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4656201076 | HOUSING REAR PART | Rear housing cover for range section |
| 4656298047 | HOUSING REAR SECTION | Complete rear housing assembly |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for housing dowels |
| 4656301148 | FIXING PLATE | Retains selector valve in position |
| 0636100817 | CAP SCREW | M10 fastener for housing attachment |
| 4656301016 | SCREEN SHEET | Fine mesh filter for oil return |
| 4656301017 | SCREEN SHEET | Coarse mesh filter for sump |
| 0636100803 | CAP SCREW | M8 fastener for selector cover |
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