Isuzu 6HK1 engine idle gear 897606-7670 Z=61, Sany material code: 60311961

Isuzu 6HK1 Engine Idler Gear 897606-7670 Z=61, Sany Material Code: 60311961
Core Information
- OEM Number: 8-97606767-0 (897606-7670)
- Sany Material Number: 60311961
- Compatible Engines: Isuzu 6HK1 (Electronic Injection) / 4HK1
- Number of Teeth: 61 teeth (Z=61), Single Row Timing Idler
- Function: Intermediate drive in the timing system, connecting crankshaft gear → camshaft gear, controlling valve timing
- Compatible Models: Sany SY305/SY335/SY365/SY375; Hitachi ZX300/330/360-5A; Sumitomo SH350, etc.
- Material: High-strength alloy steel, tooth surface high-frequency quenched (HRC58-62), wear-resistant and impact-resistant
Key Features
- Structure: Single-stage 61-tooth, paired with 41-tooth gear (6HK1 Electronic Injection Timing Gear Set)
- Precision: Dynamically balanced, operates quietly and vibrates minimally at high speeds
- Installation Location: Upper timing gear chamber, camshaft-side idler
- Interchangeability: Not interchangeable with **897600-5861 (Triple 70-60-30) or 897112-6071 (Single 46-tooth)**;专用 for 6HK1 electronic injection engines only
Purchase and Installation Notes
- Code Verification: Confirm 897606-7670 + 60311961 + Z=61 to distinguish between direct injection/electronic injection, single-tooth/triple idler
- Replacement Timing: Must replace during major overhauls of electronic injection 6HK1 engines, or when timing noise, tooth skipping, difficulty starting, or insufficient power occur
- Installation Focus:
1. Gear timing marks must align, with marks overlapping at top dead center of cylinder 1
2. Idler shaft bushing clearance should be 0.03–0.06mm; replace bushing if out of tolerance
3. Bolt torque: 50–60N·m, tighten evenly in two stages
- Fault Association: Exclusive to electronic injection 6HK1 engines. If timing misalignment, unstable idle, or black exhaust smoke occur, prioritize checking this 61-tooth idler