Overview
The ZF 0501.219.677 RANGE SELECTOR is a critical pneumatic or mechanical control component designed to manage the splitter and range-change functions within ZF WG and BP series transmissions. This OEM genuine part, identified by SKU 0501.219.677, sits atop the transmission housing and interfaces directly with the shift rail system to engage high and low range gears. It ensures precise air distribution to the range cylinder, allowing smooth transitions between driving ranges under load. When paired with a robust TRANSMISSION HOUSING, the selector maintains alignment and sealing integrity for long service life.
Symptoms of Failure
- Delayed or missed range shifts: The transmission hesitates or fails to engage high/low range, often accompanied by a grinding noise.
- Air leaks at the selector body: Hissing sounds or loss of air pressure indicate worn seals, leading to sluggish shifting.
- Intermittent gear slippage: The transmission unexpectedly drops out of range, especially under heavy load or on inclines.
- Stuck in one range: The selector fails to actuate, locking the transmission in either high or low range regardless of driver input.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0501.219.677 |
| OEM Reference | ZF 0501.219.677 |
| Material | Die-cast aluminum alloy with nitrile seals |
| Weight | 0.85 kg (1.87 lbs) |
| Dimensions (L x W x H) | 120 mm x 80 mm x 65 mm |
| Operating Pressure | 8-12 bar (116-174 psi) |
| Temperature Range | -40°C to +120°C |
| Thread Size | M8 x 1.25 mounting bolts |
Compatibility
This range selector is engineered for ZF WG and BP series transmissions, specifically the WG260 and WG310 models. It also fits the following series based on identical pneumatic port geometry: BP 210, BP 230, WG 94, WG 115, WG 130, WG 160, WG 171, WG 190, WG 210, WG 211, WG 230, and WG 260. For proper installation, ensure the HOUSING is free of debris and that the 螺栓 (mounting bolts) are torqued to factory specifications. Use a CAP SCREW for secure fastening of the air line port.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4646101189 | TRANSMISSION HOUSING | Encloses and supports gear train and selector |
| 4646301317 | HOUSING | Secondary housing for range actuator |
| 0636115293 | 螺栓 | Mounting bolt for selector assembly |
| 0636101153 | CAP SCREW | Secures air line port fitting |
| 0736300232 | 螺栓 | Additional mounting bolt for housing |
| 4475280208 | SCREW PLUG | Seals unused air ports |
| 0634316523 | O-RING | Seals selector to housing interface |
| 4646101486 | TRANSMISSION HOUSING | Alternate housing variant for WG series |
| 4646201003 | POT | Sensor pot for range position feedback |
| 4646101484 | TRANSMISSION HOUSING | Reinforced housing for heavy-duty applications |
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