ENGINE UNIT
EM-115
< UNIT DISASSEMBLY AND ASSEMBLY >
[VQ40DE]
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• Install connecting rod bearing cap without installing connecting rod
bearing, and tightening connecting rod bolts to the specified
torque. Refer to EM-103, "Disassembly and Assembly"
for the
tightening procedure.
• Measure the inner diameter of connecting rod big end with inside
micrometer.
• If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Connecting Rod Bushing Inside Diameter (Small End)
Measure inside diameter of connecting rod bushing using suitable
tool.
Piston Pin Diameter
Measure diameter of piston pin using suitable tool.
Connecting Rod Bushing Oil Clearance (Small End)
(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) – (Piston pin outer diame-
ter)
• If the calculated value exceeds the limit, replace connecting rod assembly and/or piston and piston pin
assembly.
• If replacing piston and piston pin assembly. Refer to EM-124, "How to Select Piston and Bearing"
.
• If replacing connecting rod assembly, follow the "CONNECTING
ROD BEARING OIL CLEARANCE" procedure to select the con-
necting rod bearing.
Standard : 57.000 - 57.013 mm (2.2441 - 2.2446 in)
PBIC1641E
Standard : 22.000 - 22.012 mm (0.8661 - 0.8666 in)
PBIC0120E
Standard : 21.989 - 22.001 mm (0.8657 - 0.8662 in)
PBIC0117E
Standard : 0.005 - 0.017 mm (0.0002 - 0.0007 in)
Limit : 0.030 mm (0.0012 in)
PBIC0809E
Revision: January 2013 2013 Xterra