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Genuine Sinotruk HOWO 082V04200-6031 Rocker Arm Assembly
This authentic Sinotruk HOWO rocker arm assembly (Part No: 082V04200-6031) is precision-engineered to exact OEM specifications, ensuring optimal engine performance and longevity for HOWO trucks. Designed for heavy-duty applications, this critical component transfers motion from the camshaft to the valves, maintaining precise valve timing and sealing under extreme operating conditions. The hardened steel construction and precision machining ensure minimal wear and reliable operation, making it an essential replacement for engine overhauls and maintenance.
Technical Specifications:
Material: Forged alloy steel (42-45 HRC hardness)
Length: 185 ± 0.1 mm
Width: 45 ± 0.05 mm
Height: 65 ± 0.05 mm
Bore Diameter: 25 ± 0.01 mm
Surface Finish: Precision ground (Ra ≤ 0.4 μm)
Temperature Resistance: -40°C to +250°C continuous operation
Load Capacity: Supports valve spring loads up to 2000 N
Compatibility: HOWO A7, T7H series with WEICHAI WP10/WP12 engines
Weight: 950 ± 10 grams
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Installation Notes
Pre-Installation Checklist:
1.Component Inspection: Verify part number (082V04200-6031) and check for cracks or deformation
2.Cleanliness: Ensure rocker arm shaft and contact surfaces are free of debris and oil residue
3.Measurement: Check rocker arm bore diameter and shaft clearance (0.02-0.05 mm)
4.Lubrication: Apply clean engine oil to rocker arm bore and contact points before installation
Installation Steps:
1.Positioning: Slide rocker arm onto shaft with lubrication hole aligned with oil passage
2.Alignment: Ensure rocker arm sits evenly on valve stem and pushrod
3.Torque Specifications: Tighten rocker arm shaft bolts to 85 ± 5 Nm in specified sequence
4.Valve Lash Adjustment: Set valve clearance to 0.25-0.30 mm (cold engine) using feeler gauges
Critical Warnings:
Never reuse old rocker arms; replace in sets per cylinder
Avoid over-tightening; use calibrated torque wrench for accuracy
Verify proper oil passage alignment to prevent lubrication failure
Check valve stem tips for wear before installation
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 valve clearances during initial break-in period
