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Discover the BY614070069 Oil Pressure Relief Valve, a precision-engineered safety component essential for maintaining optimal lubrication system pressure in SHACMAN heavy-duty diesel engines. This genuine OEM valve, identified by the part number BY614070069, acts as a vital pressure regulator that prevents damaging over-pressure conditions within the engine’s oil circuit. For reliable performance and durability, always source authentic Shacman truck parts like this one. Manufactured to exact SHACMAN specifications, the BY614070069 ensures consistent oil pressure by automatically opening to divert excess oil flow when system pressure exceeds safe operational limits.
Its robust construction withstands extreme temperatures and constant exposure to engine oil, protecting critical components like bearings, camshafts, and turbochargers from damage due to excessive pressure. Installing the correct BY614070069 valve is fundamental for engine longevity, preventing oil leaks, filter bursts, and ensuring reliable operation under all load conditions.
Oil Pressure Relief Valve
Precision-Calibrated Spring Mechanism: The BY614070069 incorporates a high-quality, heat-treated spring engineered to open at a specific pressure threshold (typically 4-6 Bar), ensuring consistent and reliable pressure regulation throughout the engine’s operational range.
Durable All-Metal Construction: Manufactured from hardened steel and corrosion-resistant alloys, the valve body, piston, and spring are built to withstand continuous exposure to hot engine oil, high pressure, and mechanical stress without fatigue or failure.
Optimized Flow Design: Engineered with precise oil flow channels and a lapped sealing surface to ensure minimal pressure drop during normal operation and rapid, stable response when relieving excess pressure back to the sump or pump inlet.
Integrated Fail-Safe Function: Designed to fail in a safe position, typically defaulting to open or limiting maximum pressure to prevent complete oil system blockage and catastrophic engine damage in case of a component malfunction.
The table below details the critical technical specifications for the BY614070069 Oil Pressure Relief Valve. This data is essential for verifying correct operation and compatibility within your SHACMAN engine’s lubrication system.
| Parameter | Value / Description |
|---|---|
| OEM Part Number | BY614070069 |
| Product Name | Oil Pressure Relief Valve |
| Brand | SHACMAN |
| Primary Material (Body/Piston) | Hardened Carbon Steel / Alloy Steel |
| Primary Material (Spring) | Chrome Silicon or Chrome Vanadium Steel |
| Opening Pressure (Cracking Pressure) | Typically 4.5 – 5.5 Bar (65 – 80 PSI) – Engine Specific |
| Full Flow Pressure | Approximately 1.0 – 1.5 Bar above cracking pressure |
| Reseal Pressure | Slightly below cracking pressure (provides hysteresis) |
| Maximum System Pressure Limit | Designed to prevent damage from over-pressure spikes |
| Thread Size / Mounting | Standard metric thread (e.g., M12x1.5 or M14x1.5) |
| Operating Temperature Range | -30°C to +150°C (Oil Temperature) |
| Compatible SHACMAN Models | F2000, F3000, M3000 series with various diesel engine configurations |
Always verify BY614070069 compatibility using your engine’s serial number or official SHACMAN documentation, as pressure settings are critical and engine-specific.
The BY614070069 Oil Pressure Relief Valve is a critical safety component typically installed in the engine block, oil filter head, or oil pump housing. It is integrated directly into the main oil gallery or high-pressure circuit.
Its primary function is to regulate maximum oil pressure within the lubrication system. During cold starts, high RPM operation, or with increased oil viscosity, pressure can spike beyond safe design limits.
The BY614070069 valve opens at its precisely calibrated pressure, creating a bypass route for excess oil to return to the sump or the pump inlet. This action prevents damage to oil seals, gaskets, filters, and ensures bearing loads remain within safe parameters.
A properly functioning valve maintains stable, optimal oil pressure across all engine operating conditions, which is essential for forming and maintaining the hydrodynamic oil film on bearing surfaces.
Failure of this component can have severe consequences. A stuck-closed valve leads to dangerously high pressure, causing oil leaks, filter bursts, or even engine damage. A stuck-open valve results in chronically low oil pressure, leading to increased wear, turbocharger failure, and potential engine seizure.
1. Ensure the engine is cool and the vehicle is securely supported. Drain the engine oil to a level below the valve’s mounting point if necessary.
2. Locate the pressure relief valve, typically on the side of the engine block, near the oil filter housing, or on the oil cooler.
3. Clean the surrounding area thoroughly to prevent debris from entering the oil gallery upon removal.
4. Using the correct socket or wrench, carefully unscrew the old valve assembly. Be prepared for some residual oil to drain out.
5. Inspect the valve port in the engine block for debris or scoring. Clean the threads meticulously with a thread chaser or appropriate tool.
6. Install the new BY614070069 valve by hand to avoid cross-threading, then torque it to the manufacturer’s specification. Do not overtighten.
7. Refill with the correct grade and quantity of oil. Start the engine, monitor oil pressure gauge readings, and check for leaks around the new valve.
• Monitor the engine oil pressure gauge or warning light closely. Erratic pressure or persistent low/high pressure readings can indicate valve issues.
• During oil changes, consider inspecting the valve if there is a history of pressure problems. Look for metal shavings or sludge around the old valve.
• Listen for unusual ticking or rattling from the valve area, which might indicate a worn spring or piston.
• Adhere to strict oil and filter change intervals using recommended fluids. Contaminated oil can cause the BY614070069 valve to stick.
• If the valve is suspected of failure, replace it with a genuine BY614070069. Do not attempt to disassemble, clean, or recalibrate the valve, as its settings are factory-sealed.
• Keep a maintenance log noting any oil pressure-related repairs or valve replacements for future reference and warranty claims.
Correct torque and cleanliness are paramount for the BY614070069. A contaminated installation or cross-threaded valve can lead to immediate failure and oil system damage.
The genuine BY614070069 valve is calibrated on specialized equipment to open at the exact pressure specified for your SHACMAN engine model. This precision ensures optimal oil film thickness and component protection under all operating conditions.
Aftermarket valves often have inconsistent spring rates and poor sealing surfaces. This can lead to early opening (causing low oil pressure and wear) or late opening (causing high pressure and seal damage), both of which compromise engine safety and longevity.
The materials in the OEM BY614070069 are selected for their fatigue resistance and stability across the engine’s entire temperature range. Inferior materials can lead to spring sag or piston galling over time, altering the valve’s critical set point.
Using the genuine part guarantees that the most critical safety device in your lubrication system performs as engineered by SHACMAN. It is a small investment that protects the entire engine from extremely costly damage and ensures warranty compliance.
SHACMAN master technicians emphasize the importance of using the genuine BY614070069 when diagnosing and correcting oil pressure faults. Its consistent performance resolves issues on the first repair attempt, reducing diagnostic time.
Fleet maintenance managers report that preventative replacement of the pressure relief valve during major engine overhauls with the BY614070069 contributes to more predictable oil pressure and fewer lubrication-related failures across their vehicle roster.
Operators of heavy-haul and mining equipment, where engine load is extreme, particularly value the reliability of the OEM valve in maintaining stable oil pressure under the most demanding conditions, preventing unexpected downtime.
The component is renowned for its durability, often lasting the entire engine life when coupled with proper maintenance and clean oil. Its failure rate is significantly lower than that of non-genuine alternatives, providing long-term peace of mind.
A properly functioning BY614070069 valve prevents oil system over-pressure, which is a primary cause of blown seals, gasket failures, and catastrophic oil leaks that harm the environment through soil and water contamination.
By maintaining correct oil pressure, it ensures optimal engine efficiency and complete combustion, indirectly contributing to lower emissions and better fuel economy over the vehicle’s service life.
Preventing engine seizure due to oil starvation avoids roadside breakdowns and the associated safety risks for drivers and other road users, as well as costly recovery operations.
The longevity and reliability of the genuine part reduce waste from premature failures and repeated replacements, supporting sustainable maintenance practices and a lower total environmental footprint.
Each BY614070069 valve undergoes rigorous testing, including pressure crack/reshut testing, material integrity checks, and dimensional verification to meet SHACMAN’s exacting standards for performance and durability.
As a genuine SHACMAN component, the BY614070069 is backed by the manufacturer’s warranty against defects in materials and workmanship, providing assurance of its reliability and performance in this critical application.
Purchasing from authorized distributors guarantees you receive an authentic, calibrated valve. Counterfeit valves pose a severe risk to engine health, are not performance-guaranteed, and are not covered by warranty.
The consistent quality allows technicians and fleet managers to install the valve with confidence, knowing it will perform its protective function as intended, safeguarding the engine investment.
The genuine BY614070069 represents a minor cost compared to the engine components it protects—crankshaft bearings, turbochargers, cylinder heads. Its value is in catastrophic failure prevention.
Its reliability eliminates diagnostic ambiguity and repeat repairs associated with erratic oil pressure, saving significant labor costs and reducing vehicle downtime, which is critical for commercial operations.
For fleet operations, standardizing on the OEM valve ensures consistent oil pressure performance across all assets, leading to predictable maintenance schedules, extended engine life, and higher resale values.
Investing in the correct BY614070069 during engine service or overhaul is the most cost-effective insurance policy against lubrication system failure and its devastating financial consequences.
The BY614070069 Oil Pressure Relief Valve is engineered for specific SHACMAN engine families and their unique lubrication system designs. Pressure settings, thread size, and port configuration are not universal.
Using the exact OEM number BY614070069 is critical. Valves with incorrect cracking pressure, thread size, or physical dimensions will not function correctly and can cause immediate engine damage or lubrication failure.
Always confirm fitment using your engine’s model number, serial number, or the Vehicle Identification Number (VIN). Cross-reference with the official SHACMAN parts database or consult an authorized dealer for certainty.
The engineering behind the BY614070069 integrates it with the specific oil pump output, gallery design, and bearing clearances of its intended engine, a level of system integration that generic aftermarket parts cannot achieve.
The BY614070069 Oil Pressure Relief Valve is the unsung guardian of your SHACMAN engine’s lubrication system. Its role in maintaining safe, consistent oil pressure is fundamental to engine health, performance, and longevity.
Choosing the genuine BY614070069 is a direct investment in engine protection, operational reliability, and cost avoidance. Trust SHACMAN’s OEM engineering for the precision, durability, and peace of mind your heavy-duty application demands.
Protect your engine’s critical systems with confidence. Select the authentic BY614070069 Oil Pressure Relief Valve to ensure optimal lubrication, prevent catastrophic failure, and guarantee dependable performance for every mile of your journey.
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