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EM-142
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
CRANKSHAFT PIN JOURNAL DIAMETER
● Measure outer diameter of crankshaft pin journal with microme-
ter.
● If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-142,
"CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT OUT-OF-ROUND AND TAPER
● Using a micrometer, measure the dimensions at “4” different
points shown in the figure on each journal and pin.
● Out-of-round is indicated by the difference in dimensions
between “X” and “Y” at “A” and “B”.
● Taper is indicated by the difference in dimension between “A”
and “B” at “X” and “Y”.
● If the measured value exceeds the limit, correct or replace crankshaft.
● If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then
select the main bearing and/or connecting rod bearing. Refer to EM-143, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-142, "CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT RUNOUT
● Place a V-block on a precise flat table to support journals on the
both end of crankshaft.
● Place a dial gauge straight up on No. 3 journal.
● While rotating crankshaft, read the movement of the pointer on
the dial gauge. (Total indicator reading)
● If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
● Install connecting rod bearings to connecting rod and connect-
ing rod bearing cap, and tighten connecting rod bolts to the
specified torque. Using a inside micrometer measure the inner
diameter of connecting rod bearing. Refer to EM-126, "
ASSEM-
BLY" for the tightening procedure.
(Oil clearance) = (Connecting rod bearing inner diameter) – (Crank-
shaft pin diameter)
Standard : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Standard
Taper (Difference between “A” and “B”)
: Less than 0.002 mm (0.0001 in)
Out-of-round (Difference between “X” and “Y”)
: Less than 0.002 mm (0.0001 in)
SBIA0535E
Standard : Less than 0.025 mm (0.0010 in)
Limit : Less than 0.10 mm (0.0039 in)
SEM346D
Standard : 0.034 - 0.059 mm (0.0013 - 0.0023 in)
(actual clearance)
Limit : 0.070 mm (0.0028 in)
PBIC1642E
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