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Genuine Sinotruk HOWO 080V04103-0109 Valve Spring Seat
This authentic Sinotruk HOWO valve spring seat (Part No: 080V04103-0109) is manufactured to exact OEM specifications, ensuring optimal engine performance and durability. Designed for heavy-duty applications in HOWO truck engines, this precision component provides a stable foundation for valve springs, maintaining proper alignment and reducing wear on both the spring and cylinder head. The hardened steel construction withstands extreme engine temperatures and continuous valve train operation, making it an essential replacement part for maintaining engine compression and performance
Technical Specifications:
Material: Heat-treated alloy steel (42-45 HRC hardness)
Outer Diameter: 42.5 ± 0.1 mm
Inner Diameter: 32.0 ± 0.05 mm
Thickness: 5.5 ± 0.1 mm
Surface Finish: Ground and polished (Ra ≤ 0.8 μm)
Temperature Resistance: -40°C to +300°C continuous operation
Load Capacity: Supports spring loads up to 2500 N
Compatibility: HOWO A7, T7H, T5G series with WEICHAI WP10/WP12 engines
Weight: 85
Manufacturing Standard: ISO 9001 certified, OEM specifications
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Installation Guidelines for 080V04103-0109 Valve Spring Seat:
Pre-Installation Checklist:
1.Component Inspection: Verify part number (080V04103-0109) matches OEM requirements
2.Surface Examination: Check cylinder head valve spring pockets for wear, cracks, or debris
3.Cleanliness: Ensure all components are perfectly clean and free from oil residue
4.Measurement: Verify valve spring seat dimensions match specifications before installation
Installation Steps:
1.Positioning: Place spring seat in cylinder head pocket with beveled edge facing upward
2.Alignment: Ensure seat sits flush and level in the pocket without rocking
3.Spring Installation: Install valve spring directly over the seat, ensuring proper orientation
4.Retainer Assembly: Install valve spring retainer and locks using proper valve spring compressor
5.Clearance Check: Verify proper valve stem height and spring installed height
Critical Warning:
Always replace valve spring seats in complete sets per cylinder
Never reuse old spring seats when replacing valve springs
Verify cylinder head pocket dimensions for excessive wear
Check valve spring seat contact surface for flatness
Torque Specifications:
Valve cover bolts: 8-10 Nm (in proper sequence)
Rocker arm shaft bolts: 85 ± 5 Nm
Post-Installation:
Prime oil system before initial startup
Run engine at idle and check for unusual valve train noises
Re-torque rocker arm bolts after first 500 km of operation
Monitor engine performance for proper valve operation
