Isuzu 6HK1 engine rocker arm 897306-4212, Sany material code: B229900004437

Isuzu 6HK1 Engine Rocker Arm 897306-4212, Sany Material Code: B229900004437
Core Information
OEM Model 8-97306421-2 (897306-4212)
Sany Material Number B229900004437
Compatible Engine Isuzu 6HK1 (common for electronic injection and direct injection, including Hitachi and Sumitomo models)
Compatible Models Sany SY305/SY335/SY365/SY375; Hitachi ZX300/330/360-5A, Sumitomo SH350, etc.
Material High-strength aluminum alloy die-casting; rollers made of alloy steel with quenching treatment
Function Transmit camshaft power and control the opening and closing of intake and exhaust valves; roller design reduces camshaft wear
Installation Quantity 12 per engine (2 per cylinder: intake + exhaust)
Key Features and Market Reference
1. Performance Features
- Uses lightweight aluminum alloy material to reduce reciprocating inertia and enhance engine response
- Equipped with wear-resistant rollers and copper bushings to minimize friction with the camshaft and extend service life
- Reasonable oil passage design ensures adequate lubrication and prevents high-temperature sticking
Purchase and Installation Notes
- Code Verification: When purchasing,务必 verify 897306-4212 + B229900004437, and distinguish between intake/exhaust rocker arms (non-interchangeable for some models).
- Replacement Recommendation: It is recommended to replace all 12 together during engine overhaul or when abnormal valve noise or clearance is detected, to avoid uneven wear between new and old parts causing valve timing deviation.
- Installation Requirements:
1. Before installation, check if the roller rotates smoothly without sticking, and inspect for wear on the copper bushing
2. Apply engine oil to the rocker arm shaft hole for lubrication; pay attention to the direction marking during installation
3. After installation, the valve clearance must be rechecked and adjusted (intake: 0.4mm, exhaust: 0.5mm)
- Fault Diagnosis: Engine valve noise, reduced power, increased fuel consumption are often caused by worn rocker arm rollers or loose copper bushings, requiring timely replacement.