2008 INFINITI FX35 engine

ENGINE ASSEMBLYEM-121
< SERVICE INFORMATION > [VQ35DE]
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 When installing engine mounting bracket (RH and LH) on cylinder
block, tighten two upper bolts (shown as “A” in the figure) first.
Then tighten two lower bolts (shown as “B” in the figure).
 Install engine mounting bracket (RH) (lower) as follows:
- Temporarily tighten mounting bolts (shown as “C”, “D” and “E” in the figure).
- Tighten mounting bolts to the specified torque with following mounting surfaces touched.
 Engine mounting bracket (RH) to engine mounting bracket (RH)
(lower) (shown as “C” and “D” in figure).
 Front final drive to engine mounting bracket (RH) (lower) (shown as “E” in figure).
 Make sure all engine mounting insulators are seated properly, then
tighten mounting nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following 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, check 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 applicable 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.
PBIC3042E
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

CYLINDER BLOCKEM-123
< SERVICE INFORMATION > [VQ35DE]
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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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-124
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
4. Lift the engine, and mount it onto engine stand (SST).
 A widely use engine stand can be used.CAUTION:
Use an engine stand that h as a load capacity [approxi-
mately 220 kg (485 lb) or more] large enough for support-
ing the engine weight.
NOTE:
This example is an engine stand for holding at transmission
mounting side with drive plate removed.
5. Drain engine oil. Refer to LU-7, "
Changing Engine Oil".
PBIC2685E
PBIC0085E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-125
< SERVICE INFORMATION > [VQ35DE]
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6. Drain engine coolant by removing water drain plugs from cylin-
der block both sides at “B” and “C” and cylinder block front side
at “A” as shown in the figure.
7. Remove drive plate with power tool. Fix cr ankshaft with a ring gear stopper [SST: KV1011770 (J44716)],
and remove mounting bolts.
 Loosen mounting bolts in diagonal order.
CAUTION:
 Do not disassemble drive plate.
 Never 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 ma nner that prevents it from
becoming magnetized.
8. Remove the following parts:  Intake manifold collector: Refer to EM-19, "
Component".
 Intake manifold: Refer to EM-24, "
Component".
 Oil pans (lower and upper): Refer to EM-30, "
Component (2WD Models)".
 Front and rear timing chain case: Refer to EM-64, "
Component".
 Cylinder head: Refer to EM-100, "
On-Vehicle Service".
9. Remove knock sensor. CAUTION:
Carefully handle sensor avoiding shocks.
PBIC2610E
SEM760G
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-129
< SERVICE INFORMATION > [VQ35DE]
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 Tighten each plug as specified below.
3. Install oil jet.  Insert oil jet dowel pin into cylinder block dowel pin hole, andtighten mounting bolts.
4. Install main bearings and thrust bearings as follows: CAUTION:
Be careful not to drop main b earing, and to scratch the surface.
a. Remove dust, dirt, and engine oil on bearing mating su rfaces 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 crankshaft arm(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.
5. Install crankshaft to cylinder block.  While turning crankshaft by hand, check that it turns smoothly.
6. Install main bearing cap.
Part Washer Tightening torque
A No 9.8 N·m (1.0 kg-m, 87 in-lb)
B No 19.6 N·m (2.0 kg-m, 14 ft-lb)
C No 19.6 N·m (2.0 kg-m, 14 ft-lb)
D Yes 12.3 N·m (1.3 kg-m, 9 ft-lb) E Yes 62.0 N·m (6.3 kg-m, 46 ft-lb)F Yes 62.0 N·m (6.3 kg-m, 46 ft-lb)
PBIC0898E
PBIC0807E
PBIC2489E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-130
< SERVICE INFORMATION >[VQ35DE]
CYLINDER BLOCK
 Main bearing caps are identified by identification mark cast on
them. For installation, face front mark to front side.
NOTE:
Main bearing cap cannot be replaced as a single part, because it
is machined together with cylinder block.
7. Install main bearing beam.  Install main bearing beam with front mark facing downward (oil pan side).
 Install main bearing beam with front mark facing front of the
engine.
8. Install main bearing cap bolts in numerical order as shown in the figure as follows:
a. Inspect the outer diameter of main bearing cap bolt. Refer to EM-138, "
Inspection After Disassembly".
b. Apply new engine oil to threads and seat surfaces of main bear- ing cap bolts.
c. Tighten main bearing cap bolts in several different steps.
d. Turn all main bearing cap bolts 90 degrees clockwise (Angle tightening).
CAUTION:
Use the angle wrench [SST: KV10112100 (BT8653-A)] to
check tightening angle. Do not make judgment by visual
inspection.
 After installing main bearing cap bolts, make sure that crank-
shaft can be rotated smoothly by hand.
 Check the crankshaft end play. Refer to EM-138, "
Inspection
After Disassembly".
9. Install piston to connecting rod as follows:
a. Using a snap ring pliers, install new snap ring to the groove of piston rear side.  Insert it fully into groove to install.
b. Install piston to connecting rod.  Using an industrial use drier or similar tool, heat piston until piston pin can be pushed in by hand without
excess force [approx. 60 to 70 °C (140 to 158 °F)]. From the front to the rear, insert piston pin into piston
and connecting rod.
SEM456G
PBIC0881E
: 35.3 N·m (3.6 kg-m, 26 ft-lb)
PBIC1800E
PBIC0921E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

CYLINDER BLOCKEM-131
< SERVICE INFORMATION > [VQ35DE]
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 Assemble so that the front mark on the piston head and the
cylinder number on connecting rod are positioned as shown in
the figure.
c. Install new snap ring to the groove of the piston front side.  Insert it fully into groove to install.
 After installing, make sure that connecting rod moves
smoothly.
10. Using a piston ring expander (commercial service tool), install piston rings.
CAUTION:
 When installing piston rings, be careful not to damagepiston.
 Be careful not to damage piston rings by expending them excessively.
 If there is stamped mark on ri ng, mount it with marked side up.
NOTE:
If there is no stamp on ring, no specific orientation is required
for installation.
 Position each ring with the gap as shown in the figure referring to the piston front mark.
 Check the piston ring side clearance. Refer to EM-138, "
Inspection After Disassembly".
11. Install connecting rod bearings to connecting rod and connecting rod bearing cap. CAUTION:
Be careful not to drop connecting r od bearing, and to scratch the surface.
 Before installing connecting rod bearings, apply engine oi l to the bearing surface (inside). Do not apply
engine oil to the back surface, but thoroughly clean it.
SEM838F
PBIC0087E
Stamped mark:
To p r i n g : —
Second ring : “R”
SEM757G
PBIC0808E
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