Genuine SINOTRUK HOWO Pivot Bush AZ1642430263 – Heavy Duty Suspension Flip Bushing Spare Part

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‌Installation Tools & Preparation‌

1. ‌Required Tools‌

   • Hydraulic press (10-20T capacity)
   • Torque wrench (50-150Nm range)
   • Wire brush and degreaser
   • LOCTITE 243 threadlocker

2. ‌Vehicle Preparation‌

   • Secure cabin in tilted position using hydraulic support system
   • Clean mounting surfaces with acetone (remove grease/rust)

‌Removal Process‌

‌Step 1: Old Bushing Extraction‌
❶ Apply penetrating oil (WD-40) to corrosion areas
❷ Use hydraulic press to push out worn bushing

• Maintain alignment within 2° deviation
• Heat surrounding area to 80-100°C if stuck

‌Step 2: Surface Preparation‌

‌New Bushing Installation‌

‌Step 1: Lubrication & Alignment‌

• Coat inner surface with molybdenum disulfide grease
• Align bushing oil groove with chassis lubrication point

‌Step 2: Press-Fit Procedure‌
❶ Use press adapter sleeves to protect bushing edges
❷ Apply gradual pressure (max 15T force)
❸ Verify flush seating (gap <0.1mm perimeter)

‌Post-Installation Verification‌

1. ‌Torque Specifications‌

   Component	Value
   Pivot bolt	120-130Nm
   Lock nut	90Nm + 30° turn

2. ‌Functional Check‌

   • Confirm smooth rotation (0.5-2.5N·m rotational torque)
   • Test full cabin tilt cycle 3x without binding

3. ‌Stress Relief Protocol‌

   • Loosen/re-torque all suspension arm bolts at ride height
   • Complete four-wheel alignment within 50km

‌Critical Maintenance Note‌

• Re-grease through zerk fitting every 15,000km
• Replace if radial play exceeds 1.5mm