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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 23 (Engine Mechanical (Except Hybrid)) >> Unit Disassembly And Assembly >> Cylinder Block >> Inspection >> Bearing Clearance >> Connecting Rod Bearing (Big End)

Connecting Rod Bearing (Big End)

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the connecting rod bearing to the connecting rod and cap.
  2. Install the connecting rod cap to the connecting rod. Tighten to specification. Refer to DISASSEMBLY AND ASSEMBLY .
  3. Measure the inner diameter (C) of each connecting rod (big end) as shown in illustration.
    G04159937Courtesy of NISSAN NORTH AMERICA, INC.
  4. Measure the outer diameter (Dp) of each crankshaft pin journal.
    G04159938Courtesy of NISSAN NORTH AMERICA, INC.
  5. Calculate the connecting rod bearing clearance.

    Connecting rod bearing clearance = (C) - (Dp) 

    Standard : 0.020 - 0.045 mm (0.0008 - 0.0018 in)
    Limit : 0.070 mm (0.0028 in)
  6. If the calculated clearance exceeds the specified limit, replace the bearings.
  7. If the clearance cannot be adjusted within the standard of any bearing, grind the crankshaft journal and use undersized bearings.
  8. If the crankshaft is replaced with a new one, select the connecting rod bearings according to the following table:
    G04073131Courtesy of NISSAN NORTH AMERICA, INC.

    Connecting Rod Bearing Grade Number (Identification Color) 

    Crankshaft pin journal grade number Connecting rod bearing grade number
    0 0 (black)
    1 1 (brown)
    2 2 (green)

    These numbers are punched in either Arabic or Roman numerals.

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