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This genuine Sinotruk HOWO piston pin (Part No: 080V02502-0129) is precision-engineered to exact OEM specifications for optimal engine performance and longevity. Designed for durability under extreme operating conditions, it ensures precise piston movement and reliable power transmission in HOWO truck engines. The piston pin serves as the critical connecting element between the piston and connecting rod, transferring combustion forces while maintaining proper alignment under high-temperature and high-pressure conditions
Technical Specifications:
Material: High-grade alloy steel (Case-hardened)
Surface Hardness: 58-62 HRC
Core Hardness: 28-32 HRC
Diameter: 48.5 ± 0.005 mm
Length: 112.5 ± 0.1 mm
Weight: 1.2 kg
Surface Finish: Precision ground and polished (Ra ≤ 0.2 μm)
Compatibility: HOWO A7, T7H, T5G series engines with WEICHAI WP10/WP12 engines
Temperature Resistance: -40°C to +300°C
Manufacturing Standard: ISO 9001 certified, OEM specifications
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Installation Notes
Installation Guidelines for 080V02502-0129 Piston Pin:
Pre-Installation Checklist:
1.Inspection: Verify part number (080V02502-0129) matches OEM requirements
2.Cleanliness: Ensure work area, tools, and components are perfectly clean
3.Temperature: Heat piston to 80-100°C using controlled heating method
4.Lubrication: Apply clean engine oil to piston pin and connecting rod small end
Installation Steps:
1.Piston Preparation: Position piston with arrow mark toward front of engine
2.Pin Insertion: Align piston pin with piston bores and connecting rod small end
3.Press Fitting: Using proper mandrel, press pin into position with steady pressure (max 5-10 kN)
4.Verification: Ensure pin rotates freely in connecting rod without binding
5.Clearance Check: Verify pin-to-piston clearance (0.002-0.005 mm) and pin-to-rod clearance (0.015-0.035 mm)
Critical Warning:
Never hammer pin into position - use proper press tooling
Always replace piston pins in complete sets per cylinder
Verify pin retention method (circlips/set screws) are properly installed
Check pin end float (0.5-1.0 mm) after installation
Post-Installation:
Prime oil system before initial startup
Follow engine break-in procedure recommended by manufacturer
Monitor engine for unusual noises during first operating hours
