Heavy Machinery Transmission & Gearbox Spare Parts
OEM-quality transmission and gearbox components for Fast Gear (Shaanxi Fast), ZF powershift, SANY, XCMG, HOWO, LIUGONG, and SHANTUI. Clutch packs, torque converters, synchro rings, shift valves, seal kits — manual and automatic.
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1. Transmission Brands & Models
| Transmission | Type | Equipment | Key Parts |
|---|---|---|---|
| Fast Gear 9JS119 / 9JS135 / 9JS150 | 9-speed manual | HOWO, SHACMAN trucks | Synchro rings, shift forks, main shaft, countershaft, bearings |
| Fast Gear 12JS160T / 12JS200T | 12-speed manual | HOWO A7, SITRAK, BEIBEN | Range shift cylinder, splitter piston, gear sets |
| Fast Gear 16S series / AMT | 16-speed / Automated | HOWO TX, SITRAK C7H | TCU sensors, clutch actuator, shift solenoids |
| ZF 4WG-200 / 4WG-210 | Powershift (4F/3R) | SANY wheel loaders, XCMG ZL50 | Clutch pack (K1–K4), torque converter, control valve |
| ZF 6WG-210 / 6WG-260 | Powershift (6F/3R) | LIUGONG 877H, XCMG LW600 | Electronic control unit, proportional valves |
| SANY Self-Developed | Powershift / Hydrostatic | SANY SY215C–SY485H | Travel motor + reducer (final drive), swivel joint |
2. Core Transmission Parts
| Part Category | Function | Failure Signs | Quality Tier Available |
|---|---|---|---|
| Clutch Pack (Friction + Steel) | Engage/disengage gear ranges | Slipping, burnt smell, delayed engagement | OEM / Aftermarket |
| Torque Converter | Fluid coupling + torque multiplication | Overheating, stall speed too high, shudder | OEM / Rebuilt / Aftermarket |
| Synchro Ring (Cone) | Smooth gear engagement (manual) | Grinding noise when shifting | OEM / Aftermarket (bronze/moly) |
| Shift Fork / Rail | Mechanical gear selection | Hard shifting, gear pop-out | OEM only (cast/forged steel) |
| Control Valve Body | Hydraulic shift logic (auto/powershift) | Harsh shifts, stuck in gear, error codes | OEM / Remanufactured |
| Main Shaft / Countershaft | Power transmission spine | Bearing noise, gear wobble | OEM / Aftermarket (heat-treated) |
| Oil Pump + Filter Kit | Transmission lubrication & cooling | Low pressure, overheating towing | OEM / Aftermarket |
3. Transmission-Equipment Matrix
| Equipment Type | Common Transmission | Typical Service Life | Overhaul Kit Part # Pattern |
|---|---|---|---|
| HOWO Dump Truck | Fast 9JS135 / HW19710 | 300,000–500,000 km | 9JS135-overhaul-kit |
| SITRAK C7H Tractor | Fast 12-speed AMT | 500,000–800,000 km | SITRAK-AMT-kit |
| XCMG ZL50GN Loader | ZF 4WG-200 | 8,000–12,000 hr | 4WG200-clutch-pack |
| LIUGONG 856H Loader | LIUGONG BS305 / ZF 4WG-200 | 10,000–15,000 hr | BS305-seal-kit |
| SANY SY215C Excavator | Travel motor + TM series reducer | 12,000–18,000 hr | SY215-travel-motor-seal |
| SHANTUI SD22 Bulldozer | SANY powershift | 10,000–15,000 hr | SD22-trans-kit |
Transmission Overhaul? We Supply the Complete Parts Kit
Tell us the transmission model (e.g., Fast 9JS135, ZF 4WG-210) and your equipment — we'll quote the full overhaul kit with HD pre-shipment photos.
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