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This authentic Sinotruk HOWO exhaust valve bridge (Part No: 082V04120-0024) 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 rocker arm to paired exhaust valves, maintaining precise valve timing and sealing under extreme operating conditions. The hardened steel construction and precision machining ensure perfect alignment and minimal wear, making it an essential replacement for engine overhauls and maintenance.
Technical Specifications:
Material: Heat-treated alloy steel (42-45 HRC hardness)
Length: 98.5 ± 0.1 mm
Width: 25.0 ± 0.05 mm
Height: 32.5 ± 0.05 mm
Surface Finish: Precision ground (Ra ≤ 0.4 μm)
Temperature Resistance: -40°C to +300°C continuous operation
Load Capacity: Supports valve spring loads up to 2000 N
Compatibility: HOWO A7, T7H series with WEICHAI WP10/WP12 engines
Weight: 185 ± 5 grams
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Installation Notes
Pre-Installation Checklist:
1.Component Inspection: Verify part number (082V04120-0024) and check for cracks or deformation
2.Cleanliness: Ensure valve bridge seats and contact surfaces are free of carbon deposits and debris
3.Measurement: Check valve stem heights for consistency (max 0.05 mm variation between paired valves)
4.Lubrication: Apply clean engine oil to all moving contact surfaces before installation
Installation Steps:
1.Positioning: Place valve bridge on exhaust valve stems with flat surface facing rocker arm
2.Alignment: Ensure bridge sits evenly on both valve stems without rocking or binding
3.Rocker Arm Installation: Install rocker arm and adjust to proper valve lash specification
4.Torque Specifications: Tighten rocker arm shaft bolts to 85 ± 5 Nm in specified sequence
5.Clearance Check: Verify valve lash (0.25-0.30 mm cold) using feeler gauges
Critical Warnings:
Never reuse old valve bridges when replacing valves or performing engine work
Always replace valve bridges in pairs per cylinder to maintain balanced operation
Check rocker arm and valve stem tips for wear before installation
Verify proper valve bridge orientation to prevent binding or premature wear
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
