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Home >> Infiniti >> 2004 >> QX56 RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1200 (Engine Mechanical) >> Cylinder Block >> How to Select Piston and Bearing >> How To Select Main Bearing >> When New Cylinder Block and Crankshaft are Used

When New Cylinder Block and Crankshaft are Used

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply the main bearing housing grade on the bottom face of the cylinder block to the row in "Main Bearings Selection Table".
    Fig 1: How To Select Main Bearing
    G02384583Courtesy of NISSAN MOTOR CO., U.S.A.
  2. Apply the journal diameter grade on the crankshaft front to the column in "Main Bearings Selection Table".
    Fig 2: Identifying Pin Diameter Grade And Journal Diameter Grade
    G02384584Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Read the symbol at the cross point of the selected row and column in the "Main Bearings Selection Table".
    CAUTION:
    • Initial clearance for No. 1, 5 journal and No. 2, 3, 4 journal is different. Use two different selection lists for each part.
    • No. 1, 5 journal and No. 2, 3, 4 journal have the same signs but different measures. Do not confuse them.
  4. Apply the symbol to the "Main Bearings Grade Table" to select.
    NOTE:
    • Grade list applies to all journals.
    • Service parts are available as a set of both upper and lower.
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