2008 INFINITI FX35 engine

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

ENGINE ASSEMBLYEM-237
< SERVICE INFORMATION > [VK45DE]
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ENGINE ASSEMBLY
ComponentINFOID:0000000001325801
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325802
WARNING:
 Situate vehicle on a flat and solid surface.
 Place chocks at front and back of rear wheels.
 For engines not equipped with engi ne slingers, attach proper slingers and bolts described in PARTS
CATALOG.
CAUTION:
 Always be careful to work safely, avoid forceful or uninstructed operations.
 Do not start working until exhaust system and engine coolant are cool enough.
 If items or work required are not covered by th e engine section, refer to the applicable sections.
 Always use the support poin t specified for lifting.
 Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for unavoid-
able reasons, support at the rear axle jacking poin t with transmission jack or similar tool before
starting work, in prepar ation for the backward shif t of center of gravity.
 For supporting points fo r lifting and jacking point at rear axle, refer to GI-37, "
Garage Jack and
Safety Stand".
REMOVAL
Outline
At first, remove engine, transmission assembly and front final drive with front suspension member from vehicle
downward. Then separate engine from transmission.
Preparation
1. Engine mounting bracket (RH) 2. Engine mounting insulator (RH) 3. Engine mounting bracket (LH)
4. Engine mounting insulator (LH) 5. Plate 6. Collar
7. Grommet 8. Engine rear member 9. Engine mounting insulator (rear)
JPBIA0902GB
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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)".
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

ENGINE ASSEMBLYEM-239
< SERVICE INFORMATION > [VK45DE]
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10. Disconnect steering lower joint at power steering gear
assembly side, and release steering lower shaft.
Refer to PS-12, "
Removal and Installation".
11. Remove rear propeller shaft. Refer to PR-7, "
On-Vehicle Inspection".
 After disconnection, plug the opening on transmission side.
12. Remove front drive shaft (both side). Refer to FAX-13, "
On-Vehicle Inspection".
13. Remove front propeller shaft. Refer to PR-4, "
On-Vehicle Inspection".
14. Remove three way catalyst (both bank). Refer to EM-179, "
Component".
Removal Work
1. Install engine slingers into front of cylinder head (left bank) and
front of cylinder head (right bank).
2. Lift with hoist and secure engine in position.
3. Use manual lift table caddy (commercial service tool) or equivalently rigid tool such as transmission jack. Securely support bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting surface, secure a completely stable
condition.
4. Remove engine rear member mounting bolts.
5. Remove front suspension member mounting nuts with power tool. Refer to FSU-5, "
On-Vehicle Inspection
and Service".
6. Carefully lower jack, or raise lift to remove engine, transmission front final drive and front suspension member assembly. When
performing work, observe the following caution:
CAUTION:
 Confirm there is no interference with vehicle.
 Make sure that all connectio n points have been discon-
nected.
 Keep in mind the center of veh icle gravity changes. If nec-
essary, use jack(s) to support vehicle at rear jacking
point(s) to prevent it from falling it off the lift.
Separation Work
1. Change engine slinger installing to cylinder head (right bank).
NOTE:
In order to keep secure position when hoisting engine.
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member. CAUTION:
 Before and during this lifting, always make sure that any harnesses are left connected.
Slinger bolts:
: 33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC1556E
PBIC1557E
Slinger bolts: : 33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC2447E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-240
< SERVICE INFORMATION >[VK45DE]
ENGINE ASSEMBLY
 Avoid damage to and oil/grease smearing or
spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-19, "
System Description".
5. Remove starter motor. Refer to SC-8, "
System Description".
6. Separate engine from transmission assembly. Refer to AT-243, "
Removal and Installation (AWD Models)".
7. Remove front final drive from engine. Refer to FFD-14, "
Removal and Installation (VQ35DE Models)".
8. Remove engine mounting insulators (RH and LH) and brackets (RH and LH) from engine with power tool.
9. Remove engine rear member and engine mounting insulator (rear) from transmission.
INSTALLATION
Note the following, and install in the reverse order of removal.
 Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.
 For a location with a positioning pin, insert it securely into hole of mating part.
 For a part with a specified installation orientation, refer to component figure in "Removal and Installation".
 When installing engine mounting brackets (RH and LH) on cylinder
block, tighten two upper bolts (show n as “A” in the figure) first.
Then tighten two lower bolts (shown as “B” in the figure).
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The followings are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
 Before starting engine, check oil/fluid levels incl uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-9, "
Fluids and Lubricants".
 Use procedure below to check for fuel leakage.
- Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at connection points.
- Start engine. With engine speed increased, che ck again for fuel leakage at connection points.
 Run engine to check for unusual noise and vibration.
 Warm up engine thoroughly to make sure there is no leak age of fuel, exhaust gases, or any oil/fluids includ-
ing engine oil and engine coolant.
 Bleed air from lines and hoses of applic able lines, such as in cooling system.
 After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the specified level, if necessary.
Summary of the inspection items:
*: Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc.
PBIC2365E
Items Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-243
< SERVICE INFORMATION > [VK45DE]
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- A/C compressor: Refer to
ATC-121, "Component".
- Ignition coil: Refer to EM-187, "
Component".
- Rocker cover: Refer to EM-196, "
Component".
- Other removable brackets
NOTE:
The figure shows an example of widely use engine stand that
can hold mating surface of transmission with drive plate and rear
plate removed.
CAUTION:
Before removing the hanging chains, make sure the engine
stand is stable and there is no risk of overturning.
4. Drain engine oil. Refer to LU-24, "
Changing Engine Oil".
5. Drain engine coolant from inside engine by removing water drain plugs “B” as shown in the figure.
6. Remove the following parts and related parts (The parts listed in step 3 are not included here).  Oil pan and oil strainer: Refer to EM-183, "
Component".
 Crankshaft pulley, front cover and timing chain: Refer to EM-199, "
Component".
 Camshaft: Refer to EM-211, "
Component".
 Cylinder head: Refer to EM-226, "
On-Vehicle Service".
7. Remove knock sensor. CAUTION:
Carefully handle sensor, avoiding shocks.
8. Remove piston and connecting rod assembly as follows:  Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to
EM-256, "
Inspection After Disassembly".
a. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
b. Remove connecting rod bearing cap.
c. Using 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.
9. Remove connecting rod bearings from connecting rod and connecting rod bearing cap.
CAUTION:
Identify installation po sitions, and store them without mixing them up.
PBIC0085E
PBIC1265E
PBIC0086E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-245
< SERVICE INFORMATION > [VK45DE]
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 Before loosening main bearing cap bolts, measure the crankshaft end play. Refer to
EM-256, "Inspec-
tion After Disassembly".
 Loosen main bearing cap bolts in several different steps.
a. Remove cover attached to the rear left side of cylinder block (next to the starter motor housing).
NOTE:
Bolts (No. 27 shown in the figure) are installed on the inside of
cover.
b. Loosen side bolts (M10) starting from 30 to 21 to remove.
c. Loosen main bearing cap sub bolts (M9) starting from 20 to 11 to remove.
d. Loosen main bearing cap bolts (M12) starting from 10 to 1 to remove.
e. Using main bearing cap remover (SST), remove main bearing cap.
15. Remove crankshaft.
16. Remove main bearings and thrust bearings from cylinder block and main bearing caps. CAUTION:
Identify installation po sitions, and store them without mixing them up.
17. If pilot converter must be remov ed, remove it from the rear end
of the crankshaft using pilot bushing puller (SST).
 It is possible to remove pilot converter without hoisting engine with engine stand.
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 the cylinder block. (Only screwed-type plugs are shown in the figure.)
 Apply sealant to the thread of each plug “A” and “D”.
Use Genuine High Strength Locking Sealant or equiva-
lent. Refer to GI-44, "
Recommended Chemical Product
and Sealant".
 Apply sealant to the thread of each plug “B” and “C”. Use Anaerobic Liquid Gasket or equivalent. Refer to GI-
44, "Recommended Chemical Product and Sealant".
 Replace copper washers with new ones.
PBIC0090E
PBIC0091E
PBIC0092E
PBIC1265E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C