Why Choose Us?
Reliable Quality: Our products meet the highest industry standards.
Quick Delivery: Efficient shipping to ensure minimal downtime.
Expert Support: Professional assistance for installation and troubleshooting.
Genuine Sinotruk HOWO 080V04102-0155 Valve Spring Set
This authentic Sinotruk HOWO valve spring (Part No: 080V04102-0155) is manufactured to exact OEM specifications, ensuring optimal engine performance and longevity. Designed for durability under extreme operating conditions, these valve springs maintain precise valve timing and seating in HOWO truck engines. The precision-engineered springs provide consistent tension throughout the engine’s RPM range, preventing valve float and ensuring proper compression in demanding heavy-duty applications.
Technical Specifications:
Material: High-chromium alloy steel
Wire Diameter: 4.5 ± 0.02 mm
Outer Diameter: 36.5 ± 0.2 mm
Free Length: 54.5 ± 0.5 mm
Spring Rate: 32.5 N/mm ± 1.5 N/mm
Installed Height: 42.5 mm
Load at Installed Height: 195 ± 8 N
Solid Height: 31.5 ± 0.3 mm
Number of Active Coils: 6.5
Surface Treatment: Shot peened and heat-treated for fatigue resistance
Temperature Resistance: -40°C to +220°C continuous operation
Compatibility: HOWO A7, T7H, T5G series with WEICHAI WP10/WP12 engines
Manufacturing Standard: ISO 9001 certified, OEM specifications
1. WE TREAT EVERY CUSTOMER AS OUR FRIEND, STICK TO THE PRINCIPLE: WIN-WIN AND MUTUAL BENEFIT ;
2. A VARIETY OF CHOICE FOR PRODUCTS: QUALITY, BRAND, PACKAGING;
3. WE WILL REPLY YOU FOR YOUR INQUIRY IN 24 HOURS.
4.Professional Perfomance SINOTRUCK parts supplier
5. WE WILL BE ON SERVICE 24/24 HOURS ON THE WORKING DAY.
6. ASS: WE WILL OFFER YOU THE BEST AFTER SALES SERVICE.
Installation Guidelines for 080V04102-0155 Valve Spring:
Pre-Installation Checklist:
1. Component Inspection: Verify all springs for cracks, corrosion, or deformation before installation
2. Measurement Check: Measure free length and compare against specifications (54.5 ± 0.5 mm)
3. Cleanliness: Ensure valve spring seats and retainers are perfectly clean and free from debris
4. Lubrication: Apply clean engine oil to valve stems and spring seats
Installation Steps:
1. Spring Orientation: Install springs with closer coils toward cylinder head (where marked)
2. Compression Tool: Use proper valve spring compressor tool to avoid damage
3. Retainer Installation: Carefully install retainers and keepers while maintaining compression
4. Height Verification: Check installed height (42.5 mm) and adjust if necessary
5. Squareness Check: Ensure springs sit square to valve stem axis
Critical Warning:
• Always replace valve springs in complete sets per cylinder
• Never mix old and new springs on the same valve train
• Verify spring installed load (195 ± 8 N) using spring tester
• Check valve stem height after spring installation
Torque Specifications:
• Rocker arm shaft bolts: 85 ± 5 Nm
• Cylinder head bolts: Refer to specific engine manual for torque sequence
Post-Installation:
• Prime oil system before initial startup
• Run engine at idle for initial break-in period
• Re-torque rocker arm bolts after first 500 km of operation
• Monitor for unusual valve train noises during initial operation
