torque INFINITI FX35 2008 Service Manual

EM-146
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
 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-134, "
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 a 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 connecting rod bearing cap, and tighten connecting rod bolts to the specified torque. Refer to EM-123, "
Disassembly and Assembly" for the tightening proce-
dure.
CAUTION:
Do not rotate crankshaft.
 Remove connecting rod bearing cap and bearings, and using the scale on the 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
 Install main bearings to cylinder block and main bearing caps, and
tighten main bearing cap bolts with main bearing beam to the
specified torque. Refer to EM-123, "
Disassembly and Assembly"
for the tightening procedure.
 Measure the inner diameter of main bearing with a bore gauge.
(Oil clearance) = (Main bearing inner diameter) – (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-134,
"How to Select Piston and Bearing".
Method of Using Plastigage
 Remove engine oil and dust on crankshaft journal and the surfaces of each bearing completely.
 Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil
holes.
 Install main bearing to cylinder block and main bearing cap, and tighten main bearing bolts with main bear-
ing beam to the specified torque. Refer to EM-123, "
Disassembly and Assembly" for the tightening proce-
dure.
CAUTION:
Never rotate crankshaft.
PBIC1149E
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
(actual clearance)
Limit : 0.065 mm (0.0026 in)
PBIC1644E
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CYLINDER BLOCKEM-147
< SERVICE INFORMATION > [VQ35DE]
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 Remove main bearing caps and bearings, and using the scale on
the 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 CRUSH HEIGHT
 When main bearing cap is removed after being tightened to thespecified torque with main bearings installed, the tip end of bearing
must protrude. Refer to EM-123, "
Disassembly and Assembly" for
the tightening procedure.
 If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT
 When connecting rod bearing cap is removed after being tightened to the specified torque with connecting rod bearings installed, the
tip end of bearing must protrude. Refer to EM-123, "
Disassembly
and Assembly" for the tightening procedure.
 If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
 Measure the outer diameters (“d1”, “d2”) at two positions as shown
in the figure.
 If reduction appears in “A” range, regard it as “d
2”.
 If it exceeds the limit (large difference in dimensions), replace main bearing cap bolt with new one.
CONNECTING ROD BOLT OUTER DIAMETER
PBIC1149E
Standard : There must be crush height.
SEM502G
Standard : There must be crush height.
PBIC1646E
Limit (“d1” – “d2”) : 0.11 mm (0.0043 in)
PBIC0911E
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PRECAUTIONSEM-161
< SERVICE INFORMATION > [VK45DE]
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Precaution for Assembly and InstallationINFOID:0000000001325756
 Use torque wrench to tighten bolts or nuts to specification.
 When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,
do exactly as specified.
 Replace with new gasket, packing, oil seal or O-ring.
 Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for any restriction and blockage.
 Guide pins are used for several parts alignment. When replacing and reassembling parts with guide pins, make sure that guide pins are installed in the original portion.
 Avoid damaging sliding or mating surfaces. Completely re move foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.
 Release air within route when refilling after draining engine coolant.
 After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Parts Requiring Angle TighteningINFOID:0000000001325757
 Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
- Cylinder head bolts
- Main bearing cap bolts
- Connecting rod cap nuts
- Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angletightening)
 Do not use a torque value for final tightening.
 The torque value for these parts are for a preliminary step.
 Ensure thread and seat surfaces are clean and coated with engine oil.
Precaution for Liquid GasketINFOID:0000000001325758
REMOVAL OF LIQUID GASKET SEALING
 After removing mounting nuts and bolts, separate the mating sur- face using seal cutter (SST) and remove old liquid gasket sealing.
CAUTION:
Be careful not to damage the mating surfaces.
 Tap seal cutter to insert it, and then slide it by tapping on the side
as shown in the figure.
 In areas where seal cutter (SST) is difficult to use, use plastic ham-
mer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reaso n tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the liquid gasket application surface and the mating surface.
 Remove liquid gasket completely from the groove of the liquid
gasket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur- face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
PBIC0002E
PBIC0003E
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EM-182
< SERVICE INFORMATION >[VK45DE]
EXHAUST MANIFOLD AND THREE WAY CATALYST
 Install exhaust manifold and tighten mounting nuts in numerical
order as shown in the figure.
NOTE:
Tighten mounting nuts No. 1 to 4 in two steps. The numerical order
No. 9 to 12 shown second steps.
Air Fuel Ratio Sensor and Heated Oxygen Sensor
 Install air fuel ratio sensors and heated oxygen sensors in the original position.
 Install referring the following if the installation positions cannot be identified.
CAUTION:
 Before installing a new air fuel ratio sensor and heated oxy-
gen sensor, clean exhaust system threads using oxygen sen-
sor thread cleaner (commercial service tool: J-43897-18 or J-
43897-12), and apply anti-seize lubricant (commercial service
tool).
 Do not over torque air fuel ra tio sensor and heated oxygen sensor. Doing so may cause damage to
the heated oxygen sensor, r esulting in “MIL” coming on.
A : Left bank
B : Right bank
: Engine front
PBIC3300E
Glass tube colorAir fuel ratio sensor 1 : Black
Heated oxygen sensor 2 : White
PBIC2652E
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CAMSHAFTEM-213
< SERVICE INFORMATION > [VK45DE]
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1. Measure the camshaft cam height with micrometer.
2. If wear exceeds the limit, replace camshaft.
Camshaft Journa
l Oil Clearance
CAMSHAFT JOURNAL DIAMETER Measure the outer diameter of camshaft journal with micrometer.
CAMSHAFT BRACKET INNER DIAMETER Tighten camshaft bracket bolt with the specified torque. Refer to "INSTALLATION" for the tightening proce-
dure.
 Measure the inner diameter “A” of camshaft bracket with bore
gauge.
CAMSHAFT JOURNAL OIL CLEARANCE (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter).
 If the calculated value out of the standard, replace either or both camshaft and cylinder head.
NOTE:
Camshaft bracket cannot be replaced as a single part , because it is machined together with cylinder head.
Replace whole cylinder head assembly.
Camshaft End Play
Standard cam height
Intake : 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Exhaust : 43.925 - 44.115 mm (1.7293 - 1.7368 in)
Cam wear limit : 0.2 mm (0.008 in)
PBIC0039E
Standard:No. 1 : 25.938 - 25.955 mm (1.0212 - 1.0218 in)
No. 2, 3, 4 : 25.953 - 25.970 mm (1.0218 - 1.0224 in)
PBIC0040E
Standard: 26.000 - 26.021 mm (1.0236 - 1.0244 in)
PBIC1645E
Standard:No. 1 : 0.045 - 0.083 mm (0.0018 - 0.0033 in)
No. 2, 3, 4 : 0.030 - 0.068 mm (0.0012 - 0.0027 in)
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EM-238
< SERVICE INFORMATION >[VK45DE]
ENGINE ASSEMBLY
1. Release fuel pressure. Refer to
EC-665, "Fuel Pressure Check".
2. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant".
CAUTION:
 Perform this step when engine is cold.
 Do not spill engine coolant on drive belts.
3. Disconnect both battery terminal. Refer to SC-4, "
How to Handle Battery".
4. Remove crankshaft position sensor (POS) from transmission. CAUTION:
 Handle carefully to avoid dropping and shocks.
 Do not disassemble.
 Do not allow metal powder to adhere to magnetic part at sensor tip.
 Do not place sensors in a location wh ere they are exposed to magnetism.
5. Remove the following parts:  Hood assembly: Refer to BL-13, "
Fitting Adjustment".
 Engine cover: Refer to EM-169
.
 Front and rear engine undercover
 Air duct (inlet), air duct and air cleaner case assembly: Refer to EM-173, "
Component".
 Drive belts: Refer to EM-170, "
Component".
 Radiator and radiator hoses (upper and lower): Refer to CO-40, "
Component".
 Front road wheels and tires
Engine Room LH
1. Disconnect engine room harness from the engine side and set it aside for easier work.
2. Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Discharge refrigerant from A/C circuit. Refer to ATC-120, "
HFC-134a (R-134a) Service Procedure".
6. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
121, "Component".
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-190, "Component".
CAUTION:
Fit plugs onto disconnected hose to prevent fuel leak.
2. Disconnect engine room harness from the engine side and set it aside for easier work.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Disconnect reservoir tank of power steering oil pum p from engine, and move it aside for easier work.
CAUTION:
When temporarily securing, keep reservoir tank upright to avoid a fluid leak.
Vehicle Underbody
1. Remove front cross bar. Refer to FSU-5, "On-Vehicle Inspection and Service".
2. Disconnect power steering oil pump from engine. Move it from its location and secure with a rope for eas-
ier work. Refer to PS-29, "
Removal and Installation (VK45DE Models)".
3. Remove A/T fluid cooler tube. Refer to AT-241, "
Removal and Installation (2WD Models)".
4. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
Checking Exhaust Sys-
tem".
5. Remove RH and LH transverse link mounting bolts and nuts. Refer to FSU-13, "
Removal and Installation".
6. Disconnect stabilizer connecting rod lower. Refer to FSU-5, "
On-Vehicle Inspection and Service".
7. Remove A/T control rod at control device assembly side. Then temporarily secure it on transmission, so
that it does not sag. Refer to AT-205, "
Control Device Removal and Installation".
8. Remove rear plate cover from oil pan. Then remove bolts fixing drive plate to torque converter. Refer to EM-183, "
Component" and AT-241, "Removal and Installation (2WD Models)".
9. Remove transmission joint bolts which pierce at oil pan lower rear side. Refer to AT-241, "
Removal and
Installation (2WD Models)".
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EM-246
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
 Tighten each plug as specified below.
3. Install main bearings and thrust bearings as follows:
a. Remove dust, dirt and oil on the bearing mating surfaces of cylinder block and main bearing caps.
b. Install thrust bearings to the both sides of the No. 3 journal hous- ing on cylinder block and main bearing cap.
 Install thrust bearings with the oil groove facing the crankshaftarm (outside).
 Install thrust bearing with a protrusion on one end on cylinder block, and thrust bearing with a protrusion at center on main
bearing cap. Align each protrusion with mating notch.
c. Install main bearings paying attention to the direction.  Main bearing with oil hole and groove goes on cylinder block.
The one without them goes on main bearing cap.
 Before installing main bearings, apply engine oil to the bearing
surface (inside). Do not apply engine oil to the back surface,
but thoroughly clean it.
 When installing, align main bearing stopper protrusion to cut- out of cylinder block and main bearing caps.
 Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
4. Install pilot converter to crankshaft, if removed.  With drift [outer diameter: appr ox. 35 mm (1.38 in)], press-fit
as far as it will go.
 Press-fit pilot converter with its chamfering side facing crank- shaft as shown in the figure.
 It is possible to remove pilot converter without hoisting engine with engine stand.
Part Washer Tightening torque
A Yes 53.9 N·m (5.5 kg-m, 40 ft-lb)
B No 19.6 N·m (2.0 kg-m, 14 ft-lb)
C Yes 62.7 N·m (6.4 kg-m, 46 ft-lb)
D Yes 62.7 N·m (6.4 kg-m, 46 ft-lb)
PBIC2368E
PBIC2369E
EMP0569D
SEM537E
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CYLINDER BLOCKEM-259
< SERVICE INFORMATION > [VK45DE]
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CONNECTING ROD BIG END DIAMETER
 Install connecting rod bearing cap without installing connecting rod
bearing, and tightening 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 big end with inside
micrometer.
 If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bush ing Inner Diameter
Measure the inner diameter of connecting rod bushing with inside
micrometer.
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with micrometer.
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bus hing inner diameter) – (Piston pin outer diame-
ter)
 If the calculated value exceeds the limit, replac e connecting rod assembly and/or piston and piston pin
assembly.
 If replacing piston and piston pin assembly, refer to EM-250, "
How to Select Piston and Bearing".
Standard : 55.000 - 55.013 mm (2.1654 - 2.1659 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)
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EM-260
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
 If replacing connecting rod assembly, refer to "CONNECTING
ROD BEARING OIL CLEARANCE" to select the connecting rod
bearing.
Factory installed parts grading: Service parts apply only to grade “0”.
Unit: mm (in)
*: After installing in connecting rod
CYLINDER BLOCK DISTORTION
 Using scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon, orother contamination.
CAUTION:
Be careful not to allow gasket flakes to en ter engine oil or engine coolant passages.
 Measure the distortion on the cylinder block upper face at some different points in six directions with straightedge and feeler gauge.
 If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER
 Install main bearing caps and main bearing without installing main bearings, and tighten main bearing cap bolts to the specified
torque. Refer to EM-242, "
Disassembly and Assembly" for the
tightening procedure.
 Measure the inner diameter of main bearing housing with bore gauge.
 If out of the standard, replace cylinder block and main bearing caps as assembly.
NOTE:
Cylinder block cannot be replaced as a single part, because it is
machined together with main bearing caps.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter
PBIC2164E
Grade 0 1
Connecting rod bushing
inner diameter * 22.000 - 22.006
(0.8661 - 0.8664) 22.006 - 22.012
(0.8664 - 0.8666)
Piston pin hole diameter 21.993 - 21.999
(0.8659 - 0.8661) 21.999 - 22.005
(0.8661 - 0.8663)
Piston pin outer diameter 21.989 - 21.995
(0.8657 - 0.8659) 21.995 - 22. 001
(0.8659 - 0.8662)
PBIC2372E
Limit : 0.1 mm (0.004 in)
SEM123C
Standard : 68.944 - 68.968 mm (2.7143 - 2.7153 in)
PBIC1643E
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EM-262
< SERVICE INFORMATION >[VK45DE]
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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