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This authentic Sinotruk HOWO inlet valve (Part No: 082V04101-0536) is precision-engineered to exact OEM specifications, ensuring optimal engine performance and longevity for HOWO trucks. Designed for heavy-duty applications, it facilitates efficient air intake into the combustion chamber, enhancing fuel-air mixing and combustion efficiency under extreme operating conditions. The heat-resistant steel construction and precision-machined stem ensure durability and reliable sealing, making it an essential replacement for engine overhauls and maintenance.
Technical Specifications:
Material: Heat-resistant nickel-chromium alloy steel (21-4N)
Stem Diameter: 8.5 ± 0.01 mm
Head Diameter: 42.0 ± 0.05 mm
Overall Length: 118.5 ± 0.1 mm
Stem Hardness: 30-35 HRC
Face Angle: 45° precision ground
Temperature Resistance: -40°C to +850°C (intermittent)
Compatibility: HOWO A7, T7H series with WEICHAI WP10/WP12 engines
Surface Treatment: Nitrided for wear resistance and anti-galling properties
Manufacturing Standard: ISO 9001 certified, OEM tolerances
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Installation Notes
Pre-Installation Checklist:
1.Inspect Components: Verify part number (082V04101-0536) and check for straightness (roll on flat surface) and stem finish.
2.Cleanliness: Ensure valve guide and seat are free of carbon deposits and debris.
3.Measurement: Check valve stem-to-guide clearance (0.02-0.05 mm) and valve face runout (max 0.03 mm).
Installation Steps:
1.Lubrication: Apply clean engine oil to valve stem before insertion.
2.Insertion: Gently insert valve into guide, avoiding force to prevent stem damage.
3.Spring Installation: Install valve spring, retainer, and locks using proper compressor tool.
4.Lash Adjustment: Set valve clearance to 0.25-0.30 mm (cold engine) using feeler gauges.
Critical Warnings:
Never reuse old valves; replace in sets per cylinder.
Avoid lapping unless specified; some OEM valves are coated and require no lapping.
Verify valve seat concentricity (max 0.05 mm runout) before installation.
Post-Installation:
Run engine and listen for unusual valve train noises.
Re-check valve clearance after first 500 km of operation
