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WEICHAI WD615 ENGINE Switch-off Solenoid Valve 612600091095 60400008317 612600080681
Technical Tips
1. Primary Cause of Electrical Burnout: This valve relies on an electromagnetic coil to generate suction, which in turn resets the mechanical mechanism. If a control circuit malfunction causes the solenoid valve to remain energized for an extended period, the resulting heat can easily burn out the internal coil. This typically manifests as an inability to shut off the engine or an inability to start the vehicle.
2. Water Ingress and Poor Contact: Because the solenoid valve is installed in the engine bay or near the fuel pump-an environment characterized by high temperatures and exposure to oil-the waterproof seal on the electrical connector may degrade over time. If this happens, high-pressure water (such as that used during vehicle washing) can enter the connector and cause a short circuit in the coil. When replacing the valve, ensure that the connector's locking mechanism is fully engaged.
3. Valve Spool Sticking: Poor-quality diesel fuel or the presence of metallic impurities within the valve body can cause the internal spool to become scored or jammed. In such cases, even if the electrical system functions correctly, the spool will be unable to move back and forth as intended.
Weichai Solenoid Valve Replacement BOM Detail List
| No. | Part Number | Part Name (EN) | Specification / Function | Qty | Replacement Recommendation |
|---|---|---|---|---|---|
| 1 | 612600091095 | Switch-off Solenoid Valve Assy | Genuine Weichai / Main control for mechanical fuel pump | 1 pc | Core Assembly (Replace as a whole if coil burns out, internal jams, or casing leaks) |
| 2 | 612600091095-OR | Solenoid Base O-Ring | Rubber O-ring (seals the junction between valve and fuel injection pump) | 1 pc | Mandatory Replacement (Must be renewed once disassembled to prevent oil/fuel leakage) |
| 3 | N/A (Included) | 2-Pin Waterproof Wire Connector | Heavy-duty weather-sealed electrical plug kit | 1 set | Replace if damaged (Renew if the original truck harness is brittle or corroded) |
| 4 | Q150B0616 | Hexagon Head Bolt | M6×16 (Standard mounting fastener) | 2 pcs | Replace if rusted (Old bolts tend to snap or strip due to high engine compartment heat) |
| 5 | Q40306 | Spring Lock Washer | 6mm (Anti-loosening spring lock washer) | 2 pcs | Recommended (Prevents bolts from backing out under severe diesel engine vibrations) |
| 6 | N/A | Electrical Contact Grease | Dielectric / insulating conductive grease | A.R. | Essential Consumable (Apply to wire terminals to prevent moisture and oxidation) |
DETAILS
| DESCRIPTION | Switch-off Solenoid Valve | PART NUMBER | 612600091095 60400008317 612600080681 |
| WEIGHT | 0.5kg | VOLUME |
130mm × 60mm × 55mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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