Sinotruk Genuine VG1246050060 Intermediate Gear Assembly (Pre-Loaded Bearings, For HW19712 Transmission)

Technical Specifications‌:

• ‌Components‌:
  • 37-tooth helical gear (20CrMnTi, case-hardened)
  • Tapered roller bearings (NSK 30210/J2)
  • Precision ground spacers (±0.005mm)
• ‌Pre-Assembly Data‌:
  • Bearing preload: 12-15N·m rotational torque
  • Gear runout: ≤0.025mm TIR
• ‌Performance‌:
  • Max input speed: 3,800rpm
  • Noise level: ≤78dB at 2,000rpm
• ‌Compatibility‌:
  • Sinotruk HW19712 12-Speed Transmission
  • Replaces #ZZ8407010077

‌Installation Notes‌:

1. Bearing Setting:
   • Verify preload with torque wrench (no breakaway >18N·m)
   • Do not reuse old crush sleeves
2. Gear Meshing:
   • Align factory paint marks within 1 tooth position
3. Lubrication:
   • Fill housing with 6.5L SAE 75W-90 before operation