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This authentic Sinotruk HOWO inlet valve bridge (Part No: 080V04120-0023) is manufactured to exact OEM specifications, ensuring optimal engine performance and valve train reliability. Designed for heavy-duty applications in HOWO truck engines, this precision component provides crucial support and alignment for valve mechanisms, ensuring proper valve timing and seating under extreme operating conditions. The hardened steel construction withstands high temperatures and continuous engine operation, making it an essential replacement part for maintaining engine compression and performance.
Technical Specifications:
Material: Heat-treated alloy steel (42-45 HRC hardness)
Compatibility: HOWO A7, T7H, T5G series with WEICHAI WP10/WP12 engines
Temperature Resistance: -40°C to +300°C continuous operation
Surface Treatment: Phosphated for corrosion resistance and improved lubricity
Load Capacity: Supports valve spring loads up to 2500 N
Dimensional Accuracy: ±0.01 mm tolerance
Weight: 120 ± 5 grams
Manufacturing Standard: ISO 9001 certified, OEM specifications
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Installation Guidelines for 080V04120-0023 Inlet Valve Bridge:
Pre-Installation Checklist:
1.Component Inspection: Verify part number (080V04120-0023) matches OEM requirements and inspect for any shipping damage
2.Cleanliness: Ensure all components (valve bridges, rocker arms, and valve stems) are perfectly clean and free from oil residue
3.Tool Preparation: Have proper valve spring compressor, torque wrench, and measuring tools ready
4.Workspace: Clean, well-lit area with adequate space to organize components systematically
Installation Steps:
1.Valve Spring Compression: Using proper valve spring compressor tool, compress spring until valve retainers are fully exposed
2.Old Component Removal: Carefully remove old valve bridge using appropriate tools
3.New Bridge Installation: Position new valve bridge with proper orientation on valve stem
4.Alignment Check: Ensure bridge sits evenly on valve stem with equal contact surfaces
5.Clearance Verification: Check valve lash and adjust to specifications
6.Lubrication: Apply clean engine oil to all moving contact surfaces
Critical Warning:
Always replace valve bridges in complete sets per cylinder
Never reuse old valve bridges when rebuilding valve train
Verify proper valve bridge alignment before final assembly
Check valve stem height after installation to ensure proper clearance
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 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
