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1702210B73B
FAW
| Attribute | Description |
|---|---|
| Product Name | Transmission Top Cover Assembly / Double H Shift Mechanism |
| Common Names | Gearbox Top Cover, Shift Housing, Double H Assembly |
| Function | Transmits driver input to internal gears; controls main box and sub-box range shifting |
| Position | Mounted on top of the transmission housing |
| Design Type | Integrated mechanical-pneumatic control unit with dual-range (High/Low) selection |
| Application Type | Heavy-Duty Trucks, Tractors, Long-Haul Freighters, Construction Vehicles |
| Parameter | Specification |
|---|---|
| OEM Part Number | 1702210B73B |
| Alternative Formats | |
| • 1702210-B73B (hyphenated variant) | |
| • 1702210-A73B (earlier version; verify compatibility) | |
| Material | High-strength alloy cast steel or lightweight aluminum (depending on supplier/model) |
| Weight | 18 kg – 22 kg |
| Structure Features | |
| • Integrated shift forks and shafts | |
| • Built-in self-lock and interlock mechanisms | |
| • Pneumatic Double H valve for auxiliary box range switching | |
| Shift Precision | Positioning accuracy within ±0.5 mm to prevent missed shifts |
| Operating Principle | Air-assisted mechanical actuation via compressed air from vehicle's brake system |
| Performance Standards | Meets FAW Jiefang OEM specifications; designed for durability up to 1.2 million km |
| Key Technologies | Double H pattern, pneumatic range selection, wear-resistant hardened fork tips |
| Attribute | Description |
|---|---|
| Product Name | Transmission Top Cover Assembly / Double H Shift Mechanism |
| Common Names | Gearbox Top Cover, Shift Housing, Double H Assembly |
| Function | Transmits driver input to internal gears; controls main box and sub-box range shifting |
| Position | Mounted on top of the transmission housing |
| Design Type | Integrated mechanical-pneumatic control unit with dual-range (High/Low) selection |
| Application Type | Heavy-Duty Trucks, Tractors, Long-Haul Freighters, Construction Vehicles |
| Parameter | Specification |
|---|---|
| OEM Part Number | 1702210B73B |
| Alternative Formats | |
| • 1702210-B73B (hyphenated variant) | |
| • 1702210-A73B (earlier version; verify compatibility) | |
| Material | High-strength alloy cast steel or lightweight aluminum (depending on supplier/model) |
| Weight | 18 kg – 22 kg |
| Structure Features | |
| • Integrated shift forks and shafts | |
| • Built-in self-lock and interlock mechanisms | |
| • Pneumatic Double H valve for auxiliary box range switching | |
| Shift Precision | Positioning accuracy within ±0.5 mm to prevent missed shifts |
| Operating Principle | Air-assisted mechanical actuation via compressed air from vehicle's brake system |
| Performance Standards | Meets FAW Jiefang OEM specifications; designed for durability up to 1.2 million km |
| Key Technologies | Double H pattern, pneumatic range selection, wear-resistant hardened fork tips |