Weichai Cylinder Head Assembly 1005097868 – Complete Engine Head for WP13, WP12 Diesel Engines

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Before installing the Weichai cylinder head (1005097868), clean the engine block surface thoroughly and inspect for warpage using a straight edge. Always use a new OEM-spec head gasket and new stretch-type head bolts — reusing old bolts can cause uneven clamping force and lead to head gasket blowout. Follow the official tightening sequence in stages (e.g., 50 Nm → 100 Nm → final angle torque). After installation, refill coolant, bleed air from the cooling system, and run the engine at idle before loading.