SINOTRUK HOWO Truck Hydraulic Clutch System Parts T7 T5G Clutch Master Cylinder with Reservoir Assembly WG9925230840
The WG9925230840 Clutch Master Cylinder with Reservoir Assembly is a key hydraulic control component in the SINOTRUK HOWO heavy-duty truck clutch system, responsible for converting the driver's pedal input into hydraulic pressure to control clutch release. In a manual transmission vehicle, the driver operates the clutch pedal to disengage the engine from the gearbox during gear shifts. The clutch master cylinder receives the mechanical force from the pedal, pushes the internal piston, and generates hydraulic pressure through the clutch fluid circuit. This pressure is then transferred to the clutch release mechanism, allowing the clutch assembly to disengage smoothly and helping achieve proper gear changes. The integrated reservoir provides storage capacity for hydraulic fluid and supports continuous operation of the clutch hydraulic circuit. For heavy-duty trucks used in long-distance transportation, construction sites, mining operations, and high-load working conditions, the clutch system experiences frequent engagement and disengagement cycles. The WG9925230840 clutch master cylinder assembly works together with the clutch pedal mechanism, hydraulic pipeline, clutch actuator, release bearing, and transmission system to complete the entire clutch control process. When replacing this component, buyers should confirm the part number, truck model, transmission configuration, hydraulic connection size, mounting position, and reservoir design to ensure correct installation. Selecting the correct clutch master cylinder assembly helps maintain proper hydraulic pressure transmission and supports stable clutch operation during daily vehicle use.
Product Specification
| Product Name |
Clutch Master Cylinder with Reservoir Assembly |
|---|---|
| Part Number |
WG9925230840 |
| Condition | New |
| Origin | China |
| Quality Standard | 100% Tested |
| Quality Certification | ISO, CCC, GSO, CE, SGS, TUV |
| Weight | 1.5 KG |
| Dimensions |
280 mm × 150 mm × 120 mm |

Possible symptoms include:
The complete hydraulic circuit should be checked before replacing the master
The correct clutch hydraulic fluid should follow the vehicle manufacturer's specification. Using an unsuitable fluid may affect sealing components and hydraulic system performance.