Injector Bush
Втулка форсунки
Casquillo de inyector
The genuine Shacman OEM 611600040007 Injector Bush is a precision-engineered component for the Shacman X5000 heavy-duty truck engine. Part number 611600040007 ensures correct injector alignment, combustion sealing, and heat dissipation in the cylinder head. This injector bush is critical for maintaining high-pressure fuel system integrity and preventing blow-by gases from entering the fuel return system.
Manufactured from heat-treated alloy steel with a precision ground bore, the 611600040007 injector bush provides a perfect seat for the fuel injector nozzle. It seals the injector tip from combustion pressure, preventing leakage and ensuring consistent injection spray pattern. For X5000 operators and rebuilders, using the genuine injector bush eliminates fuel dilution of engine oil and reduces injector wear.
Designed to withstand peak cylinder pressures exceeding 200 bar and extreme thermal cycling, this bush is a vital component for engine efficiency and longevity. Every 611600040007 bush undergoes 100% dimensional and hardness inspection to meet Shacman’s OE specifications.
| Parameter | Specification |
|---|---|
| OEM Part Number | 611600040007 |
| Product Name | Injector Bush / Injector Sleeve |
| Brand / Application | Shacman X5000 (WP12/WP13 engines, Euro V/VI) |
| Material | Case-hardened alloy steel (20CrMnTi or equivalent) |
| Outer Diameter (press-fit section) | 20.00 mm ±0.008 mm |
| Inner Diameter (injector seat) | 12.00 mm +0.015 / -0.005 mm |
| Overall Length | 58.0 mm ±0.15 mm |
| Surface Hardness (HRC) | 58–62 (case depth 0.3–0.5 mm) |
| Sealing Surface Finish | Ra ≤ 0.4 µm, ground and lapped |
| Installation Type | Press-fit into cylinder head (interference 0.030–0.060 mm) |
| Compatible Injector Type | Common Rail (Bosch / Weichai) |
| Max Operating Pressure | 2500 bar (fuel rail pressure) |
| Weight (each) | Approx. 45 g |
The injector bush (also known as injector sleeve) forms the interface between the fuel injector nozzle and the cylinder head. The Shacman 611600040007 bush ensures the injector is precisely positioned for correct spray penetration and combustion efficiency.
A worn or damaged bush allows combustion gases to leak past the injector copper washer, causing “diesel knock” and fuel dilution of engine oil. This leads to bearing damage and shortened engine life.
By using the genuine OEM bush, you maintain the correct injector protrusion, which is critical for the piston bowl alignment and optimal air-fuel mixing. Shacman X5000 engines rely on this precision for both power output and emission compliance.
The 611600040007 injector bush features a precision-machined tapered seat that mates with the injector nozzle’s sealing cone. This metal-to-metal seal prevents high-pressure gas blow-by even under peak firing pressures.
The case-hardened surface resists fretting and wear from injector vibrations. After millions of injection cycles, the bush maintains its original geometry, ensuring consistent sealing force.
Leaking injector bushes are a common cause of white smoke and rough idle. Replacing them with genuine Shacman parts restores engine smoothness and reduces hydrocarbon emissions.
Shacman specifies case-hardened alloy steel for the 611600040007 injector bush. The core remains tough and ductile to absorb installation stresses, while the hardened case resists wear from injector movement and combustion erosion.
After carburizing, each bush is quenched and tempered to achieve a uniform hardness profile. The bore is then honed to a mirror finish, reducing friction on the injector body.
Inferior aftermarket bushes often use low-carbon steel without proper heat treatment, leading to rapid wear or cracking. Always demand genuine Shacman for long-term reliability.
Every 611600040007 bush is measured using air gauges and coordinate measuring machines. The outer diameter is controlled to within 8 microns to ensure proper interference fit without cracking the cylinder head.
Random samples are sectioned and examined for case depth and microstructure. Shacman’s zero-defect policy guarantees that each bush meets or exceeds original equipment standards.
The sealing taper angle is verified with optical comparators. Even a 0.5-degree deviation can cause injector misalignment and leakage. Genuine bushes are perfect every time.
Replacing injector bushes requires specialized tools. After removing the old bush with a puller, the cylinder head bore must be cleaned and inspected for damage. The new 611600040007 bush should be cooled (e.g., in a freezer) and pressed in using a stepped mandrel.
Do not hammer the bush directly; use a press to avoid deformation. After installation, the bush bore may need light reaming to remove any distortion. Always install a new copper sealing washer on the injector.
This injector bush is compatible with all Shacman X5000 models using WP12 and WP13 common rail engines (2015 onwards). Verify engine serial number before ordering. Using OEM 611600040007 eliminates fitment issues.
During valve train or injector replacement, inspect each injector bush for signs of carbon tracking or combustion gas erosion. Black soot around the injector body indicates a failed bush seal.
Measure the injector protrusion using a dial gauge. If protrusion exceeds specification, the bush may have worn or the seat may be eroded. Replace the bush immediately.
Always use genuine Shacman copper washers and tighten injector clamp bolts to the correct torque (typically 25 Nm + 90°). This ensures the injector seats properly against the bush.
A well-sealed injector bush ensures that all injected fuel enters the combustion chamber, not the oil pan. Fuel dilution of engine oil reduces viscosity and can cause catastrophic bearing failure.
Leaking bushes also cause black smoke and increased particulate matter due to incomplete combustion. Genuine Shacman 611600040007 bushes help maintain Euro VI emission compliance.
Fleet data shows that replacing worn injector bushes improves fuel economy by 2-4% by restoring proper injection timing and spray pattern.
Aftermarket injector bushes often have inconsistent hardness or incorrect taper angles. This leads to premature leakage and injector seizure. Genuine Shacman bushes are manufactured under strict ISO 9001 and IATF 16949 quality systems.
Each genuine bush is laser-etched with the Shacman logo and part number for traceability. Counterfeit parts may cause injector binding or combustion gas blow-by.
Using OEM components protects your engine warranty and maintains the resale value of your X5000. Many extended warranty programs require genuine internal parts.
Although genuine injector bushes cost more upfront, they last the life of the cylinder head (up to 1.5 million km). Aftermarket bushes may fail after 200,000 km, causing repeat labor and downtime.
Preventing fuel dilution alone saves thousands in engine rebuild costs. The genuine Shacman bush is a wise long-term investment for any X5000 fleet.
Authorized Shacman distributors stock the 611600040007 injector bush in all major markets. Parts are supplied in anti-corrosion blister packs with clear OEM labeling.
For engine rebuild shops, bulk sets of 6 bushes per engine are available. Just-in-time delivery helps minimize inventory costs while ensuring critical parts are always on hand.
Always purchase from approved dealers to avoid counterfeit products. Request a certificate of conformance for large orders.
The Shacman OEM 611600040007 Injector Bush is a small but vital component that ensures your X5000 engine runs cleanly, efficiently, and reliably. By providing perfect injector alignment, robust sealing against combustion gases, and long-term wear resistance, this genuine part prevents fuel dilution, reduces emissions, and extends engine life. Invest in genuine Shacman 611600040007 injector bushes for your next cylinder head overhaul or injector replacement. Precision matters — choose original.
