2008 INFINITI FX35 Service Manual

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Page 2745 of 3924

INFINITI FX35 2008 Service Manual
CYLINDER BLOCKEM-261
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Using bore gauge, measure cylinder bore for wear, out-of-round
and taper at six different points on each cylind

Page 2746 of 3924

INFINITI FX35 2008 Service Manual
EM-262
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CYLINDER BLOCK
Re-boring Cylinder Bore
1. Cylinder bore size is determined by adding piston to
cylinder bore clearance to piston skirt diameter.
2. Install mai

EM-262
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CYLINDER BLOCK
Re-boring Cylinder Bore
1. Cylinder bore size is determined by adding piston to
cylinder bore clearance to piston skirt diameter.
2. Install main bearing caps and main bearing, and tight en to the specified torque. Otherwise, cylinder bores
may be distorted in final assembly.
3. Cut cylinder bores. NOTE:
When any cylinder needs boring, all other cylinders must also be bored.
Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a
time.
4. Hone cylinders to obtain the specified piston to cylinder bore clearance.
5. Measure finished cylinder bore for the out-of-round and taper. NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER
Measure the outer diameter of crankshaft main journals with micrometer.
If out of the standard, measure t he main bearing oil clearance. Then use undersize bearing. Refer to "MAIN
BEARING OIL CLEARANCE".
CRANKSHAFT PIN JOURNAL DIAMETER
Measure the outer diameter of crankshaft pin journal with micrometer.
If out of the standard, measure the connecting rod bearing oil clearance. Then use undersize bearing. Refer to "CONNECTING
ROD BEARING OIL CLEARANCE".
CRANKSHAFT OUT-OF-ROUND AND TAPER
Measure the dimensions at four different points as shown in thefigure on each main journal and pin journal with micrometer.
Out-of-round is indicated by the difference in the dimensions between “X” and “Y” at “A” and “B”.
Taper is indicated by the difference in the dimensions between “A”
and “B” at “X” and “Y”.
If the measured value exceeds the lim it, correct or replace crankshaft.
Re-bored size calculation: D = A + B – C
where,
D: Bored diameter
A: Piston skirt diameter as measured
B: Piston to cylinder bore clearance (standard value)
C: Honing allowance 0.02 mm (0.0008 in)
Standard : 63.940 - 63.964 mm (2.5173 - 2.5183 in) dia.
Standard : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Limit: Out-of-round (Difference between “X” and “Y”) : 0.015 mm (0.0006 in)
Taper (Difference between “A” and “B”) : 0.010 mm (0.0004 in)
PBIC1685E
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Page 2747 of 3924

INFINITI FX35 2008 Service Manual
CYLINDER BLOCKEM-263
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If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then select
t

CYLINDER BLOCKEM-263
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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 "MAIN BEARING OIL CLEARANCE" and/or
"CONNECTING ROD BEARING OIL CLEARANCE".
CRANKSHAFT RUNOUT
Place V-block on precise flat table, and support the journals on the both end of crankshaft.
Place dial indicator straight up on the No. 3 journal.
While rotating crankshaft, read the movement of the pointer on dial indicator. (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 cap, and tighten connecting rod bolts to the specified torque. Refer to EM-
242, "Disassembly and Assembly" for the tightening procedure.
Measure the inner diameter of connecting rod bearing with inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) –
(Crankshaft pin journal diameter)
If the calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod
big end diameter and crankshaft pin journal diameter to obtain the specified bearing oil clearance. Refer to
EM-250, "
How to Select Piston and Bearing".
Method of Using Plastigage
Remove oil and dust on crankshaft pin journal and the surfaces of each bearing completely.
Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the specified
torque. Refer to EM-242, "
Disassembly and Assembly" for the tightening procedure.
CAUTION:
Do not rotate crankshaft.
Remove connecting rod bearing cap and bearing, and using scale
on plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING OIL CLEARANCE
Method by Calculation
Limit : 0.10 mm (0.0039 in)
PBIC2378E
Standard : 0.020 - 0.045 mm (0.0008 - 0.0018 in) (actu-
al clearance)
Limit : 0.055 mm (0.0022 in)
PBIC1642E
PBIC1149E
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Page 2748 of 3924

INFINITI FX35 2008 Service Manual
EM-264
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
Install main bearings to cylinder block and main bearing caps, and
tighten main bearing cap bolts with main bearing to the specified
torque. Re

EM-264
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CYLINDER BLOCK
Install main bearings to cylinder block and main bearing caps, and
tighten main bearing cap bolts with main bearing to the specified
torque. Refer to EM-242, "
Disassembly and Assembly" for the
tightening procedure.
Measure the inner diameter of main bearing with bore gauge.
(Bearing clearance) = (Main bearing inner diamet er) – (Crankshaft main journal diameter)
If the calculated value exceeds the limit, select proper main bearing according to main bearing inner diame-
ter and crankshaft main journal diameter to obtain the specified bearing oil clearance. Refer to EM-250,
"How to Select Piston and Bearing".
Method of Using Plastigage
Remove oil and dust on crankshaft main journal and the surfaces of each bearing completely.
Cut plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
Install main bearings to cylinder block and main bearing caps, and tighten main bearing bolts with main bear- ing to the specified torque. Refer to EM-242, "
Disassembly and Assembly" for the tightening procedure.
CAUTION:
Do not rotate crankshaft.
Remove main bearing caps and bearings, and using scale on plas- tigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
CRUSH HEIGHT OF MAIN BEARING
When main bearing cap is removed after being tightened to the specified torque with main bearings installed, the tip end of bearing
must protrude. Refer to EM-242, "
Disassembly and Assembly" for
the tightening procedure.
If the standard is not met, replace main bearings.
CRUSH HEIGHT OF CONNECTING ROD BEARING
PBIC1644E
Standard No. 1 and 5 journal : 0.001 - 0.011 mm (0.00004 - 0.0004 in)
No. 2, 3 and 4 journal : 0.007 - 0.017 mm (0.0003 - 0.0007 in)
Limit No. 1 and 5 journal : 0.021 mm (0.0008 in)
No. 2, 3 and 4 journal : 0.027 mm (0.0011 in)
PBIC1149E
Standard : There must be crush height.
SEM502G
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Page 2749 of 3924

INFINITI FX35 2008 Service Manual
CYLINDER BLOCKEM-265
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When connecting rod bearing cap is removed after being tightened
to the specified torque with connecting rod be

Page 2750 of 3924

INFINITI FX35 2008 Service Manual
EM-266
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and LimitINFOID:0000000001325807
GENERAL SPECIFICATIONS
DRIVE BELTS
INTAKE

Page 2751 of 3924

INFINITI FX35 2008 Service Manual
SERVICE DATA AND SPECIFICATIONS (SDS)
EM-267
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Unit: mm (in)
SPARK PLUG
CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
*: Total indicator r

Page 2752 of 3924

INFINITI FX35 2008 Service Manual
EM-268
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SERVICE DATA AND SPECIFICATIONS (SDS)
*: Approximately 80
°C (176 °F)
Available Valve Lifter
Intake 0.26 - 0.34 (0.010 - 0.013) 0.304 -0.416 (0.012 - 0.016)
E

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