2005 INFINITI QX4 Factory Service Manual

Page 1993 of 3419

INFINITI QX4 2005  Factory Service Manual EM-90Revision: October 2005
CYLINDER BLOCK
2005 QX56
Piston and Piston Pin Clearance
(Piston pin clearance) = (Piston pin hole diameter) – (Piston pin
diameter)
If clearance exceeds specification,

Page 1994 of 3419

INFINITI QX4 2005  Factory Service Manual CYLINDER BLOCK
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If out of specification, replace piston ring. If the gap still exceeds the limit even with a new ring, re-bore the
cylin

Page 1995 of 3419

INFINITI QX4 2005  Factory Service Manual EM-92Revision: October 2005
CYLINDER BLOCK
2005 QX56
Piston Pin Diameter
Measure diameter of piston pin using suitable tool.
Connecting Rod Bushing Oil Clearance (Small End)
(Connecting rod small end

Page 1996 of 3419

INFINITI QX4 2005  Factory Service Manual CYLINDER BLOCK
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MAIN BEARING HOUSING INSIDE DIAMETER
Install the main bearing caps with the main bearings removed,
and tighten the bolts

Page 1997 of 3419

INFINITI QX4 2005  Factory Service Manual EM-94Revision: October 2005
CYLINDER BLOCK
2005 QX56
Measure point “H”.
Piston to Cylinder Bore Clearance
Calculate by using diameter of the piston skirt and the cylinder bore diameter (directio

Page 1998 of 3419

INFINITI QX4 2005  Factory Service Manual CYLINDER BLOCK
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CRANKSHAFT PIN DIAMETER
Measure diameter of crankshaft pin using suitable tool.
If measurement is out of standard, meas

Page 1999 of 3419

INFINITI QX4 2005  Factory Service Manual EM-96Revision: October 2005
CYLINDER BLOCK
2005 QX56
Measure inside diameter of connecting rod bearing.
(Oil clearance) = (Inside diameter of connecting rod bearing) –
(Crankshaft pin diameter)
If

Page 2000 of 3419

INFINITI QX4 2005  Factory Service Manual CYLINDER BLOCK
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Method of Using Plastigage
Remove oil and dust on the crankshaft journal and surfaces of
each bearing completely. 
Cut