Isuzu 6HK1 engine idle gear 897600-5861 Z=70-60-30, Sany material code: 60311960

Isuzu 6HK1 Engine Idler Gear 897600-5861 Z=70-60-30, Sany Material Code: 60311960
Core Information
- OEM Number: 8-97600586-1 (897600-5861)
- Sany Material Number: 60311960
- Compatible Engines: Isuzu 6HK1 (Electronically Injected / Direct Injected), also compatible with 4HK1
- Tooth Count: 70-60-30 (Triple Gear: 70 teeth outer, 60 teeth middle, 30 teeth inner)
- Function: Timing System Triple Idler Gear, simultaneously drives camshaft, high-pressure fuel pump, and oil pump; core transmission component
- Compatible Models: Sany SY305/SY335/SY365; Hitachi ZX300/330/360; Sumitomo SH350, etc.
- Material: Forged high-strength alloy steel, tooth surface high-frequency quenched for wear resistance and impact resistance
Key Features
- Structure: Three-layer integrated triple gear, synchronously transmits three power paths to ensure timing and pump speeds are synchronized
- Precision: Dynamically balanced, operates smoothly with minimal noise at high speeds (2000rpm+)
- Durability: Tooth surface hardness HRC58-62, resistant to pitting and tooth breakage under long-term heavy loads
- Interchangeability: Not interchangeable with **897112-6071 (single-tooth idler gear)**; only compatible with 6HK1/4HK1 triple-gear versions
Purchase and Installation Notes
- Code Verification: Confirm 897600-5861 + 60311960 + Z=70-60-30 to avoid confusion with single-tooth idlers
- Replacement Timing: Must replace during overhaul, when timing noise, tooth skipping, power loss, or abnormal drive of high-pressure fuel pump/oil pump occur
- Installation Focus:
1. Align gear marks; ensure triple gear markings correspond one-to-one with crankshaft/camshaft/oil pump gears
2. Idler shaft bushing clearance standard: 0.04–0.07mm; replace bushing if out of tolerance
3. Bolt torque: 55–65N·m, tighten in two stages to prevent loosening
- Fault Association: Engine timing misalignment, difficulty starting, vibration, abnormal noise, and insufficient oil pump pressure are often caused by wear or tooth breakage of this gear