Sinotruk Spare Parts 81500010046 Crankshaft Main Bearing for Howo WD615 Engine

81500010046 crankshaft main bearing is a critical Sinotruk spare part designed for Howo WD615 series diesel engines (371HP/380HP). Manufactured to OEM standards, it ensures perfect compatibility and reliable performance for heavy-duty trucks.

Key Specifications:
Part Number: 81500010046 (replaces VG1500010046)
Application: Sinotruk Howo, Shacman, Weichai WD615 engine
Material: High-strength carbon steel with anti-friction alloy layer
Weight: 2.2kg per set
Certification: ISO9001 quality approved
Warranty: 12 months

Installation Steps for 81500010046 Crankshaft Main Bearing
Pre-Installation Preparation
Clean the crankshaft journals and engine block mounting surfaces with a non-residue cleaner. Remove all dirt, oil, and metal debris to avoid abrasion. Verify the part number (81500010046) matches your Sinotruk Howo WD615 engine model.
Bearing Placement
Insert the upper main bearing shells into the engine block, ensuring the oil hole aligns with the block’s oil passage. Apply a thin layer of engine assembly lube to the bearing inner surfaces.
Crankshaft Installation
Carefully lower the crankshaft into the upper bearings. Avoid damaging the bearing surfaces during placement.
Bearing Cap Installation
Install the lower bearing shells into the bearing caps. Align cap markings with the engine block and tighten bolts gradually (torque to 220-240 N·m, center to ends).
Clearance Check
Rotate the crankshaft by hand to confirm smooth movement (no binding). Measure radial clearance (0.03-0.08 mm) with Plastigauge and axial clearance (0.10-0.30 mm) with a dial indicator.
Final Inspection
Recheck bolt torque and ensure no oil leaks. Start the engine and monitor for abnormal noise or overheating。