2008 INFINITI FX35 intake

CAMSHAFTEM-219
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b. Use feeler gauge, measure the clearance between valve lifter
and camshaft.
Valve clearance:
Unit: mm (in)
*:Approximately 80°C (176 °F)
 By referring to the figure, measure the valve clearances at
locations marked “ ×” as shown in the table below (locations
indicated with black arrow in figure).
NOTE:
Firing order 1-8-7-3-6-5-4-2
 No. 1 cylinder at compression TDC
c. Rotate crankshaft pulley clockwise (when view from engine front) by 270 degrees from the pos ition of No. 1 cylinder com-
pression TDC to align No. 3 cylinder at TDC of its compression
stroke.
NOTE:
Crankshaft pulley mounting bolt flange has a angle mark every
90 degrees. They can be used as a guide to rotation angle.
SEM139D
Cold Hot * (reference data)
Intake 0.26 - 0.34 (0.010 - 0.013) 0.304 - 0.416 (0.012 - 0.016)
Exhaust 0.29 - 0.37 (0.011 - 0.015) 0.308 - 0.432 (0.012 - 0.017)
Measuring position (right bank) No. 2
CYL. No. 4
CYL. No. 6
CYL. No. 8
CYL.
No. 1 cylinder at com-
pression TDC EXH
×
INT ××
Measuring position (left bank) No. 1
CYL. No. 3
CYL. No. 5
CYL. No. 7
CYL.
No. 1 cylinder at com-
pression TDC INT
××
EXH ××
PBIC2358E
PBIC2346E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CAMSHAFTEM-221
< SERVICE INFORMATION > [VK45DE]
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4. Measure the center thickness of the removed valve lifters with a
micrometer (A).
5. Use the equation below to calculate valve lifter thickness for replacement.  Thickness of new valve lifter can be identified by stamp markson the reverse side (inside the cylinder).
Stamp mark 788U indicates 7.88 mm (0.3102 in) in thickness.
Available thickness of valve lifter: 53 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of
0.01 mm (0.0004 in) (when manufactured at factory). Refer to EM-211, "
Component".
6. Install selected valve lifter.
7. Install camshaft. Refer to EM-211, "
Removal and Installation".
8. Manually turn crankshaft pulley a few turns.
9. Make sure that the valve clearances for cold engine ar e within the specifications by referring to the speci-
fied values. Refer to EM-218, "
Valve Clearance".
10. Install all removal parts in the reverse order of removal.
11. Warm up the engine, and check for unusual noise and vibration.
JPBIA0169ZZ
Valve lifter thickness calculation: t = t1+ (C1 – C2)
t = Valve lifter thickness to be replaced
t
1= Removed valve lifter thickness
C
1= Measured valve clearance
C
2= Standard valve clearance: Intake : 0.30 mm (0.012 in)
Exhaust : 0.33 mm (0.013 in)
A: Stamp
B : thickness of valve lifter
JPBIA0170ZZ
Stamp mark Thickness
788U 7.88 mm
789U 7.89 mm··
··
840U 8.40 mm
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER HEADEM-231
< SERVICE INFORMATION > [VK45DE]
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6. Remove valve oil seal with valve oil seal puller (SST).
7. If valve seat must be replaced, refer to
EM-232, "
Inspection After Disassembly".
8. If valve guide must be replaced, refer to EM-232, "
Inspection After Disassembly".
9. Remove spark plug tube, as necessary.  Using pair of pliers, pull spark plug tube out of cylinder head.
CAUTION:
 Take care not to damage cylinder head.
 Once removed, spark plug tube will be deforme d and cannot be reused. Do not remove it unless
absolutely necessary.
ASSEMBLY
1. When valve guide is removed, install it. Refer to EM-232, "Inspection After Disassembly".
2. When valve seat is removed, install it. Refer to EM-232, "
Inspection After Disassembly".
3. Install new valve oil seal as follows:
a. Apply new engine oil on valve oil seal joint and seal lip.
b. Install with valve oil seal drift (SST) to match dimension in the figure.
4. Install valve.  Install in the original position.NOTE:
Larger diameter valves are for intake side.
5. Install valve spring (with valve spring seat).  Install smaller pitch (valve spring seat side) to cylinder head
side.
6. Install valve spring retainer.
7. Install valve collet.
PBIC0072E
PBIC0073E
PBIC0074E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER HEADEM-233
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Measure the diameter of va
lve stem with micrometer.
Valve Guide Inner Diameter
Measure the inner diameter of valve guide with inside micrometer.
Valve Guide Clearance
(Valve guide clearance) = (Valve guide inner diameter) – (Valve stem diameter).
 If the calculated value exceeds the limit, replac e valve and/or valve guide. When valve guide must be
replaced, refer to "VALVE GUIDE REPLACEMENT".
VALVE GUIDE REPLACEMENT
When valve guide is removed, replace with oversized [0.2 mm (0.008 in)] valve guide.
1. To remove valve guide, heat cylinder head to 110 to 130 °C (230
to 266 °F) by soaking in heated oil.
2. Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US ton, 2.0 lmp ton) pressure] or hammer and valve guide drift
(commercial service tool).
CAUTION:
Cylinder head contains heat . When working, wear protec-
tive equipment to avo id getting burned.
Standard
Intake : 5.972 - 5.980 mm (0.2351 - 0.2354 in)
Exhaust : 5.962 - 5.970 mm (0.2347 - 0.2350 in)
SEM938C
Standard Intake and Exhaust : 6.000 - 6.018 mm (0.2362 - 0.2369 in)
Valve guide clearance:
Standard Intake : 0.020 - 0.046 mm (0.0008 - 0.0018 in)
Exhaust : 0.030 - 0.056 mm (0.0012 - 0.0022 in)
Limit Intake : 0.08 mm (0.0031 in)
Exhaust : 0.1 mm (0.004 in)
SEM008A
SEM931C
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EM-234
< SERVICE INFORMATION >[VK45DE]
CYLINDER HEAD
3. Using valve guide reamer (commercial service tool), ream cylin-
der head valve guide hole.
4. Heat cylinder head to 110 to 130 °C (230 to 266 °F) by soaking in
heated oil.
5. Using valve guide drift (commercial service tool), press valve guide from camshaft side to the dimensions as in the figure.
CAUTION:
Cylinder head contains heat . When working, wear protec-
tive equipment to avo id getting burned.
6. Using valve guide reamer (commercial service tool), apply reamer finish to valve guide.
VALVE SEAT CONTACT
 After confirming that the dimensi ons of valve guides and valves are
within the specifications, perform this procedure.
 Apply prussian blue (or white lead) onto contacting surface of valve
seat to check the condition of the valve contact on the surface.
 Check if the contact area band is continuous all around the circum- ference.
 If not, grind to adjust valve fitting and check again. If the contacting surface still has “NG” conditions even after the re-check, replace
valve seat. Refer to "VALVE SEAT REPLACEMENT". Valve guide hole diameter (for service parts):
Intake and exhaust: 10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C
SEM008A
PBIC0078E
Standard: Intake and exhaust: 6.000 - 6.018 mm (0.2362 - 0.2369 in)
SEM932C
SBIA0322E
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CYLINDER HEADEM-235
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VALVE SEAT REPLACEMENT
When valve seat is removed, replace with
oversized [0.5 mm (0.020 in)] valve seat.
1. Bore out old seat until it collapses. Boring shoul d not continue beyond the bottom face of the seat recess
in cylinder head. Set the machine depth stop to ensure this. Refer to EM-266, "
Standard and Limit".
CAUTION:
Prevent to scratch cylinder head by excessive boring.
2. Ream cylinder head recess diameter for service valve seat.
 Be sure to ream in circles concentric to valve guide center.This will enable valve to fit correctly.
3. Heat cylinder head to 110 to 130 °C (230 to 266 °F) by soaking in
heated oil.
4. Provide valve seats cooled well with dry ice. Force fit valve seat into cylinder head. CAUTION:
 Avoid directly touching cold valve seats.
 Cylinder head contains heat. Wh en working, wear protective equipment to avoid getting burned.
5. Using valve seat cutter set (commercial service tool) or valve seat grinder, finish seat to the specified dimensions. Refer to
EM-266, "
Standard and Limit".
CAUTION:
When using valve seat cutter, firmly grip cutter handle with
both hands. Then, press on the contacting surface all
around the circumference to cu t in a single drive. Improper
pressure on with cutter or cu tting many different times may
result in stage valve seat.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact. Refer to "VALVE SEAT CONTACT".
VALVE SPRING SQUARENESS
Oversize (Service) [0.5 mm (0.020 in)] Intake : 37.500 - 37.516 mm (1.4764 - 1.4770 in)
Exhaust : 32.700 - 32.716 mm (1.2874 - 1.2880 in)
SEM795A
SEM008A
SEM934C
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EM-236
< SERVICE INFORMATION >[VK45DE]
CYLINDER HEAD
 Set try square along the side of valve spring and rotate spring.
Measure the maximum clearance between the top face of spring
and try square.
 If it exceeds the limit, replace valve spring.
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
 Check valve spring pressure at the specified spring height.
 If the installation load or load with valve open is out of the standard, replace valve spring.
Limit : 2.0 mm (0.079 in)
PBIC0080E
Standard:
Intake and exhaustFree height : 46.35 - 46.85 mm (1.8248 - 1.8445 in)
Installation height : 33.8 mm (1.331 in)
Installation load : 165 - 189 N (16.8 - 19.3 kg, 37 - 42 lb)
Height during valve open : 24.4 mm (0.961 in)
Load with valve open : 290 - 330 N (29.6 - 33.7 kg, 65 - 74 lb)
SEM113
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EM-242
< SERVICE INFORMATION >[VK45DE]
CYLINDER BLOCK
 Refer to
GI-8, "Component" for symbols in the figure.
Disassembly and AssemblyINFOID:0000000001325804
DISASSEMBLY
NOTE:
Explained here is how to disassemble with engine stand supporting transmission surface. When using differ-
ent type of engine stand, note with difference in steps and etc.
1. Remove engine assembly from vehicle, and separa te front suspension member, transmission and front
final drive from engine. Refer to EM-237, "
Component".
2. Remove the parts that may restrict installation of engine to widely use engine stand. NOTE:
The procedure is described assuming that you use wi dely use engine holding the surface, to which trans-
mission is installed.
a. Remove drive plate.  Holding ring gear with ring gear stopper (SST).
 Loosen mounting bolts diagonally order.
CAUTION:
 Do not disassemble drive plate.
 Do not place drive plate with signal plate facing down.
 When handling signal plate, take care not to damage or scratch it.
 Handle signal plate in a manner that prevents it from becoming magnetized.
b. Remove engine rear plate.
3. Lift engine with hoist to install it onto widely use engine stand. CAUTION:
Use engine stand that has a load capacity [approximately 240 kg ( 529 lb) or more] large enough for
supporting the engine weight.
 If the load capacity of stand is not adequate, remo ve the following parts beforehand to reduce the poten-
tial risk of overturning stand.
- Intake manifolds (upper and lower): Refer to EM-175, "
Component".
- Exhaust manifold: Refer to EM-179, "
Component".
- Fuel tube and fuel injector assembly: Refer to EM-190, "
Component".
22. Main bearing 23. Rear plate 24. Crankshaft
25. Pilot converter 26. Drive plate 27. Thrust bearing
28. Side bolt 29. Reinforcement plate 30. Crankshaft position sensor (POS)
31. O-ring 32. Rear oil seal 33. Rear oil seal retainer
A.Refererence: Installed on transmis-
sion B. Refer to
EM-242
C. Right bank
D. Cylinder block heater (For Canada) E. Chamfered F. Crankshaft side : Engine front
PBIC1656E
PBIC2367E
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