SANY Genuine Hydraulic Safety Lock Micro Switch (B241200001167-1)
1. Technical Specifications
| Part Number | B241200001167-1 (OEM) / VX-56-1A3 (Core) |
| Designation | Safety Lockout Micro Switch Harness |
| Interface | 4-Pin Waterproof Plug (Red/Yellow) |
| Housing | Abrasion-resistant black corrugated conduit |
2. Functional Engineering
This micro switch acts as the electrical "gateway" for the hydraulic pilot system:
Lockout (Lever Up): Circuit opens, signaling the ECU to de-energize the pilot solenoid. Joysticks and travel pedals become completely inert.
Operational (Lever Down): Circuit closes, energizing the pilot solenoid and restoring full hydraulic function.
3. Equipment Application
Optimized for C10 series excavators (Isuzu powerplants):
Models: SY135C, SY205C, SY215C, SY235C, SY245H, SY335C, SY365H.
4. Troubleshooting & Installation
Common Failure Symptoms: Total lack of hydraulic response when the lever is down, intermittent function cuts (signal drifting), or circuit shorts where the system remains active while locked.
Overhaul Protocol: De-energize the master battery. Access via the left-hand console panel. Snap the waterproof connector into the main loom and test the signal integrity by cycling the lever five times to ensure zero lag before returning to service.
5. Genuine vs. Aftermarket
Genuine B241200001167-1 switches utilize noble metal contacts to resist arc erosion. Aftermarket components often weld shut, creating a hazardous condition where the hydraulics remain "live" despite the safety lever being engaged.
Technical Support: Xuzhou Sinoswift Import & Export Co., Ltd. | Email: [email protected]