bearing INFINITI FX35 2008 Repair Manual

EM-3
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CYLINDER BLOCK ........................................ ..241
Component .......................................................... ..241
Disassembly and Assembly ..................................242
How to Select Piston and Bearing .........................250
Inspection After Disassembly ................................256
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
266
Standard and Limit .............................................. ..266
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PRECAUTIONSEM-5
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Precaution for Assembly and InstallationINFOID:0000000001325697
 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.
 Dowel pins are used for several parts alignment. When replacing and reassembling parts with dowel pins, make sure that dowel pins are installed in the original position.
 Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for any restriction and blockage.
 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 the engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Precaution for Angle TighteningINFOID:0000000001325698
 Use the 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 bolts
- Crankshaft pulley bolt (No the angle wrench is required as 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:0000000001325699
REMOVAL OF LIQUID GASKET SEALING
 After removing mounting nuts and bolts, separate the mating sur- face using the seal cutter (SST) and remove old liquid gasket seal-
ing.
CAUTION:
Be careful not to damage the mating surfaces.
 Tap the seal cutter to insert it, and then slide it by tapping on the side as shown in the figure.
 In areas where the seal cutter is difficult to use, use a plastic ham-
mer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as a screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove old liquid gasket adhering to the gasket application surface and the mating surface.
 Remove liquid gasket completely from the groove of the gas-
ket 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-8
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PREPARATION
KV10115600
(J-38958)
Valve oil seal driftInstalling valve oil seal
Use side A.
a: 20 (0.79) dia. d: 8 (0.31) dia.
b: 13 (0.51) dia. e: 10.7 (0.421)
c: 10.3 (0.406) dia. f: 5 (0.20)
Unit: mm (in)
EM03470000
(J8037)
Piston ring compressor Installing piston assembly into cylinder bore
ST16610001
(J23907)
Pilot bushing puller Removing pilot converter
K V 1 0 1111 0 0
(J37228)
Seal cutter Removing oil pan (lower and upper), front and
rear timing chain case, etc.
KV10112100
(BT8653-A)
Angle wrench Tightening bolts for connecting rod bearing
cap, cylinder head, etc. in angle
KV10117100
(J3647-A)
Heated oxygen sensor wrench Loosening or tightening heated oxygen sen-
sor 2
For 22 mm (0.87 in) width hexagon nut
KV10114400
(J38365)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
Tool number
(Kent-Moore No.)
Tool name
Description
S-NT603
NT044
NT045
NT046
NT014
NT379
NT636
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGEM-13
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3. Specify the operating condition of the engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not related Location
of noise Type of
noise Operating condition of engine
Source of noise Check item Refer-
ence page
Before
warm- up After
warm- up When
start- ing When
idling When
racing While
driving
Top of en-
gine
Rocker
cover
Cylinder
head Ticking or
clicking
CA—AB— Tappet
noiseValve clearance
EM-91
Rattle C A — A B C Camshaft
bearing
noiseCamshaft runout
Camshaft journal oil
clearance EM-84EM-84
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock
—A—B B— Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bushing
oil clearance EM-138
EM-138
Slap or
rap
A——B B A Piston
slap noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-138EM-138
EM-138
EM-138
Knock A B C B B B
Connect-
ing rod
bearing
noiseConnecting rod bushing
oil clearance
Connecting rod bearing
oil clearance EM-138EM-138
Knock A B — A B C
Main bear-
ing noiseMain bearing oil clear-
ance
Crankshaft runout EM-138
EM-138
Front of
engine
Timing
chain caseTapping or
ticking
AA—BBB Timing
chain and
timing
chain ten-
sioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operation
EM-65
EM-64
Front of
engineSqueak-
ing or fizz-
ing
AB—B—C Drive belts
(Sticking
or slip-
ping)Drive belts deflection
EM-14
CreakingABABAB Drive belts
(Slipping)Idler pulley bearing op-
eration
Squall
Creak AB—BAB Water
pump
noiseWater pump operation
CO-22
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EM-86
< SERVICE INFORMATION >[VQ35DE]
CAMSHAFT
CAMSHAFT BRACKET INNER DIAMETER
 Tighten camshaft bracket bolt with the specified tor que. Refer to "INSTALLATION" for the tightening proce-
dure.
 Measure inner diameter “A” of camshaft bracket with a bore gauge.
CAMSHAFT JOURNA L OIL CLEARANCE (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter).
 If the calculated value exceeds the limit, replace either or both camshaft and cylinder head.
NOTE:
Camshaft brackets cannot be replaced as single part s, because there are machined together with cylinder
head. Replace whole cylinder head assembly.
Camshaft End Play
 Install a dial indicator in thrust direction on front end of camshaft. Measure the end play of a dial indicator when camshaft is moved
forward/backward (in direction to axis).
 Measure the following parts if out of the limit.
- Dimension “A” for camshaft No. 1 journal
- Dimension “B” for cylinder head No. 1 journal bearing
 Refer to the standards above, and then replace camshaft and/or cylinder head.
Camshaft Sprocket Runout
1. Put V-block on precise flat table, and support No. 2 and 4 journals of camshaft. CAUTION:
Do not support No. 1 journal (on the side of cam shaft sprocket) because it has a different diameter
from the other three locations. Standard:
No. 1 : 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E
Standard:No. 1 : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
No. 2, 3, 4 : 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit : 0.15 mm (0.0059 in)
Standard : 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit : 0.24 mm (0.0094 in)
SEM864E
Standard : 27.500 - 27.548 mm (1.0827 - 1.0846 in)
Standard : 27.360 - 27.385 mm (1.0772 - 1.0781 in)
KBIA2404J
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EM-122
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
CYLINDER BLOCK
ComponentINFOID:0000000001325746
1. Reinforcement plate 2. Drive plate 3. Rear oil seal retainer
4. Cover 5. Gasket 6. Cylinder block
7. Knock sensor 8. Oil jet 9. Thrust bearing
PBIC4690E
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CYLINDER BLOCKEM-123
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 Refer to
GI-8, "Component" for symbols in the figure.
Disassembly and AssemblyINFOID:0000000001325747
DISASSEMBLY
1. Remove the engine assembly from the vehicle, and separate transmission assembly, transfer assembly
(AWD models), front final drive assembly (AWD models) and front suspension member from the engine.
Refer to EM-112, "
Component (2WD Models)".
2. Remove exhaust manifold. Refer to EM-26, "
Component".
3. Install engine sub-attachment with engine stand shaft (SST) to right side of cylinder block.
 Use a spacer to the engine rear side.
10. Pilot converter 11. Main bearing 12. Crankshaft
13. Crankshaft key 14. Main bearing cap 15. Main bearing cap bolt
16. Main bearing beam 17. Baffle plate (2WD models) 18. Connecting rod bolt
19. Connecting rod bearing cap 20. Connecting rod bearing 21. Connecting rod
22. Snap ring 23. Piston pin 24. Piston
25. Oil ring 26. Second ring 27. Top ring
A. Refer to EM-123
B. Crankshaft side C. Chamfered
1. Cylinder block 2. Gasket 3. Water connector
4. Gasket 5. Cylinder block heater 6. Connector protector cap
PBIC2614E
SBIA0503E
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EM-126
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
10. Remove pilot converter using the pilot bushing puller (SST) as
necessary.
11. Remove rear oil seal retainer.  Remove by inserting a screwdriver between main bearing cap and rear oil seal retainer.
CAUTION:
If rear oil seal retainer is removed, replace it with new one.
NOTE:
Regard both rear oil seal and retainer as an assembly.
12. Remove baffle plate from main bearing beam (2WD models).
13. Remove piston and connecting rod assembly with the following procedure:  Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to
EM-138, "
Inspection After Disassembly".
CAUTION:
Be careful not to drop connecting ro d bearing, and to scratch the surface.
a. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
b. Remove connecting rod bearing cap.
c. Using a hammer handle or similar tool, push piston and connect- ing rod assembly out to the cylinder head side.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interf erence of the connecting rod big
end.
14. Remove connecting rod bearings from connecting rod and connecting rod bearing cap. CAUTION:
 Be careful not to drop connecting ro d bearing, and to scratch the surface.
 Identify installation positions, and store them without mixing them up.
15. Remove piston rings form piston.  Before removing piston rings, check the piston ring side clearance. Refer to EM-138, "
Inspection After
Disassembly".
 Use a piston ring expander (commercial service tool).
CAUTION:
 When removing piston rings, be careful not to damage piston.
 Be careful not to damage piston rings by expanding them
excessively.
16. Remove piston from connecting rod as follows:
SEM005G
EMQ0191D
PBIC0087E
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CYLINDER BLOCKEM-127
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a. Using a snap ring pliers, remove snap rings.
b. Heat piston to 60 to 70
°C (140 to 158 °F) with an industrial use
drier or equivalent.
c. Push out piston pin with stick of outer diameter approximately 20 mm (0.79 in).
17. Remove main bearing cap bolts. NOTE:
Use TORX socket (size E14).
 Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to EM-138, "
Inspec-
tion After Disassembly".
 Loosen main bearing cap bolts in the reverse order shown in
the figure in several different steps.
PBIC1638E
PBIC1639E
PBIC0262E
PBIC1800E
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EM-128
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
18. Remove main bearing beam.
19. Remove main bearing caps.
CAUTION:
Be careful not to drop main b earing, and to scratch the sur-
face.
 Using main bearing cap bolts, remove main bearing cap while shaking it back-and-forth.
20. Remove crankshaft.
21. Remove main bearings and thrust bearings from cylinder block and main bearing caps. CAUTION:
 Be careful not to drop main b earing, and to scratch the surface.
 Identify installation positions, and store them without mixing them up.
22. Remove oil jet.
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
2. Install each plug to cylinder block as shown in the figure.  Apply sealant to the thread of water drain plugs “A”, “B” and
“C”.
Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-44, "
Recommended Chemical Product and Sealant".
 Apply sealant to the thread of plugs “D” and “E”. Use Genuine High Strength Thread Locking Sealant or
equivalent. Refer to GI-44, "
Recommended Chemical
Product and Sealant".
 Apply sealant to the thread of plug “F”. Use Anaerobic Liquid Gasket or equivalent. Refer to GI-
44, "Recommended Chemical Product and Sealant".
NOTE:
For Canada, “F” in the figure is not plug but block heater. Refer
to EM-122, "
Component".
 Replace washers with new one.
PBIC0881E
EMQ0195D
PBIC2610E
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