Isuzu 6HK1 engine flywheel housing 898234-9011, Sany material code: 60311978

Isuzu 6HK1 Engine Flywheel Housing 898234-9011, Sany Material Code: 60311978
Core Information
- OEM Number: 8-98234901-1 (898234-9011)
- Sany Material Number: 60311978
- Compatible Engines: Isuzu 6HK1 (Electronically Injected / Direct Injected), Partially Compatible with 4HK1
- Material: High-strength gray cast iron / ductile cast iron, one-piece casting, high rigidity, vibration resistance, and crack resistance
- Functions:
1. Connection: Transition housing between the engine and transmission/torque converter, positioning and fixing the transmission
2. Protection: Houses the flywheel, clutch/hydraulic torque converter, preventing dust and water ingress
3. Installation: Starter motor mounting base, ensuring proper meshing clearance between the starter gear and flywheel ring gear
- Compatible Models: Sany SY305/SY335/SY365/SY375; Hitachi ZX330/350/360; Sumitomo SH350 and other 6HK1 models
Key Features
- Structure: One-piece molding, with starter motor mounting bracket, crankshaft rear oil seal seat, and transmission connection flange
- Precision: High flatness of flange surfaces, coaxiality error ≤0.05mm, preventing transmission noise and vibration
- Interchangeability: Only compatible with 6HK1/4HK1 electronically injected models; not interchangeable with flywheel housings for 6BG1/6WG1 engines
- Durability: Fatigue and impact resistant, less prone to cracking from engine vibrations
Purchase and Installation Notes
- Code Verification: Confirm 898234-9011 + 60311978, distinguish between direct injection/electronically injected models and different starter motor mounting positions
- Replacement Timing: Replace when housing cracks, transmission connection surface deforms, starter motor mounting bracket breaks, or oil seal seat wears causing leaks
- Installation Focus:
1. Check flange flatness before installation; correct or replace if deformed
2. Tighten bolts in diagonal sequence, torque 120–140N·m
3. After installing the starter motor, check meshing clearance with the flywheel ring gear (0.5–1.0mm) to avoid gear damage or noise
- Fault Correlation: Transmission vibration/noise, starter motor gear damage, crankshaft rear oil seal leaks, and oil seepage at the engine-transmission connection—prioritize checking the flywheel housing