2007 INFINITI FX35 checking oil

EM-4Revision: 2006 July 2007 FX35/FX45
ROCKER COVER ..................................................
.200
Components ........................................................ .200
Removal and Installation ..................................... .200
REMOVAL ........................................................ .200
INSTALLATION ................................................. .202
TIMING CHAIN ....................................................... .203
Components ........................................................ .203
Removal and Installation ..................................... .204
REMOVAL ........................................................ .204
INSPECTION AFTER REMOVAL ..................... .208
INSTALLATION ................................................. .208
INSPECTION AFTER INSTALLATION ............. .214
CAMSHAFT ............................................................ .215
Components ........................................................ .215
Removal and Installation ..................................... .215
REMOVAL ........................................................ .215
INSPECTION AFTER REMOVAL ..................... .216
INSTALLATION ................................................. .219
INSPECTION AFTER INSTALLATION ............. .221
Valve Clearance ................................................... .222
INSPECTION .................................................... .222
ADJUSTMENT ................................................. .224
OIL SEAL ............................................................... .228
Removal and Installation of Valve Oil Seal .......... .228
REMOVAL ........................................................ .228
INSTALLATION ................................................. .228
Removal and Installation of Front Oil Seal .......... .229
REMOVAL ........................................................ .229
INSTALLATION ................................................. .229
Removal and Installation of Rear Oil Seal ........... .230
REMOVAL ........................................................ .230
INSTALLATION ................................................. .230
CYLINDER HEAD .................................................. .232
On-Vehicle Service .............................................. .232
CHECKING COMPRESSION PRESSURE ...... .232
Components ........................................................ .233
Removal and Installation ..................................... .233
REMOVAL ........................................................ .233
INSPECTION AFTER REMOVAL ..................... .234
INSTALLATION ................................................. .234
Disassembly and Assembly ................................. .236
COMPONENTS ................................................ .236
DISASSEMBLY ................................................ .236
ASSEMBLY ...................................................... .237
Inspection After Disassembly .............................. .238
VALVE DIMENSIONS ....................................... .238
VALVE GUIDE CLEARANCE ........................... .239
VALVE GUIDE REPLACEMENT ...................... .239
VALVE SEAT CONTACT .................................. .241
VALVE SEAT REPLACEMENT ........................ .241
VALVE SPRING SQUARENESS ...................... .242
VALVE SPRING DIMENSIONS AND VALVE
SPRING PRESSURE LOAD ............................ .242 ENGINE ASSEMBLY ..............................................
.243
Components ......................................................... .243
Removal and Installation ...................................... .243
REMOVAL ......................................................... .243
INSTALLATION ................................................. .246
INSPECTION AFTER INSTALLATION ............. .246
CYLINDER BLOCK ................................................ .248
Components ......................................................... .248
Disassembly and Assembly ................................. .249
DISASSEMBLY ................................................. .249
ASSEMBLY ....................................................... .253
How to Select Piston and Bearing ....................... .258
DESCRIPTION ................................................. .258
HOW TO SELECT PISTON .............................. .259
HOW TO SELECT CONNECTING ROD BEAR-
ING .................................................................... .260
HOW TO SELECT MAIN BEARING ................. .261
Inspection After Disassembly ............................... .265
CRANKSHAFT END PLAY ............................... .265
CONNECTING ROD SIDE CLEARANCE ........ .265
PISTON TO PISTON PIN OIL CLEARANCE .... .265
PISTON RING SIDE CLEARANCE .................. .266
PISTON RING END GAP ................................. .266
CONNECTING ROD BEND AND TORSION .... .267
CONNECTING ROD BIG END DIAMETER ..... .267
CONNECTING ROD BUSHING OIL CLEAR-
ANCE ................................................................ .267
CYLINDER BLOCK DISTORTION ................... .268
MAIN BEARING HOUSING INNER DIAMETER .269
PISTON TO CYLINDER BORE CLEARANCE . .269
CRANKSHAFT MAIN JOURNAL DIAMETER .. .270
CRANKSHAFT PIN JOURNAL DIAMETER ..... .271
CRANKSHAFT OUT-OF-ROUND AND TAPER .271
CRANKSHAFT RUNOUT ................................. .271
CONNECTING ROD BEARING OIL CLEAR-
ANCE ................................................................ .272
MAIN BEARING OIL CLEARANCE .................. .273
CRUSH HEIGHT OF MAIN BEARING ............. .274
CRUSH HEIGHT OF CONNECTING ROD
BEARING .......................................................... .274
DRIVE PLATE ................................................... .274
SERVICE DATA AND SPECIFICATIONS (SDS) ... .275
Standard and Limit ............................................... .275
GENERAL SPECIFICATIONS .......................... .275
DRIVE BELTS ................................................... .275
INTAKE MANIFOLD AND EXHAUST MANI-
FOLD ................................................................ .275
SPARK PLUG ................................................... .276
CAMSHAFT AND CAMSHAFT BEARING ........ .276
CYLINDER HEAD ............................................. .278
CYLINDER BLOCK ........................................... .281
PISTON, PISTON RING AND PISTON PIN ..... .282
CONNECTING ROD ......................................... .283
CRANKSHAFT .................................................. .284
MAIN BEARING ................................................ .286
CONNECTING ROD BEARING ........................ .287

EM-10
[VQ35DE]
PREPARATION
Revision: 2006 July 2007 FX35/FX45
Commercial Service ToolsNBS003FW
KV10114400
(J38365)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
KV10117700
(J44716)
Ring gear stopper Removing and installing crankshaft pulley
10006 31U00
(—)
Engine rear slinger Removing and installing oil pan (upper) for on
vehicle service
—
(J-45488)
Quick connector release Removing fuel tube quick connectors in
engine room
Tool number
(Kent-Moore No.)
Tool name Description
NT636
NT822
SBIA0530E
PBIC0198E
(Kent-Moore No.)
Tool name Description
(—)
Power tool Loosening nuts and bolts
(BT3373-F)
Belt tension gauge Checking drive belt tension
PBIC0190E
AMA126

DRIVE BELTS EM-15
[VQ35DE]
C
D E
F
G H
I
J
K L
M A
EM
Revision: 2006 July 2007 FX35/FX45
DRIVE BELTSPFP:02117
Checking Drive BeltsNBS003FZ
WARNING:
Be sure to perform when engine is stopped.
1. Inspect belts for cracks, fraying, wear and oil. If necessary, replace.
2. Inspect drive belt deflection or tension at a point on belt midway between pulleys.

Inspection should be done only when engine is cold, or over
30 minutes after engine is stopped.

Measure the belt tension with belt tension gauge (Commercial
service tool: BT3373-F or equivalent) at points marked
shown in the figure.

When measuring the deflection, apply 98 N (10 kg, 22 lb) at
the marked point.

Adjust if the belt deflection exceeds the limit or if the belt ten-
sion is not within specifications.
CAUTION:

When checking the belt deflection or the tension immediately after installation, first adjust it to
the specified value. Then, after turning crankshaft two turns or more, re-adjust to the specified
value to avoid variation in deflection between pulleys.

Tighten idler pulley lock nut by hand and measure the deflection or the tension without loose-
ness.
Belt Deflection and Tension
*: If belt tension gauge cannot be installed at check points shown, check drive belt tension at different location on belt.
Tension AdjustmentNBS003G0
CAUTION:

When belt is replaced with a new one, adjust it to value for “New belt” to accommodate for insuffi-
cient adaptability with pulley grooves.

When deflection or tension of belt being used exceeds “Limit”, adjust it to value for “After adjust-
ment”.

When checking belt deflection or tension immediately after installation, first adjust it to the speci-
fied value. Then, after turning crankshaft two turns or more, re-adjust to the specified value to
avoid variation in deflection between pulleys.

When installing belt, make sure that it is correctly engaged with pulley grooves.

Keep engine oil, working fluid and engine coolant away from belt and pulley grooves.

Do not twist or bend belt excessively.
KBIA1731J
Items Deflection adjustment Unit: mm (in) Tension adjustment* Unit: N (kg, lb)
Used belt New belt Used belt
New belt
Limit After adjustment Limit After adjustment
Alternator and
power steering
oil pump belt 7 (0.28)
4 - 5
(0.16 - 0.20) 3.5 - 4.5
(0.138 - 0.177) 294 (30, 66) 730 - 818
(74.5 - 83.4, 164 - 184) 838 - 926
(85.5 - 94.5, 188 - 208)
A/C compressor
belt 12 (0.47) 9 - 10
(0.35 - 0.39) 8 - 9
(0.31 - 0.35) 196 (20, 44) 348 - 436
(35.5 - 44.5, 78 - 98) 470 - 559
(47.9 - 57.0, 106 - 126)
Applied pushing
force 98 N (10 kg, 22 lb) —
Portion
Belt tightening method for adjustment
Alternator and power steering oil pump belt Adjusting bolt on idler pulley
A/C compressor belt Adjusting bolt on idler pulley

EM-16
[VQ35DE]
DRIVE BELTS
Revision: 2006 July 2007 FX35/FX45
ALTERNATOR AND POWER STEERING OIL PUMP BELT
1. Remove front engine undercover with power tool.
2. Loosen idler pulley lock nut (A) and adjust tension by turning adjusting bolt (B).

For the specified belt tension, refer to EM-15, "Checking Drive
Belts" .
3. Tighten nut (A).
A/C COMPRESSOR BELT
1. Remove front engine undercover with power tool.
2. Loosen idler pulley lock nut (C) and adjust tension by turning adjusting bolt (D).

For the specified belt tension, refer to EM-15, "Checking Drive Belts" .
3. Tighten nut (C).
Removal and InstallationNBS003G1
REMOVAL
1. Remove front engine undercover with power tool.
2. Remove alternator and power steering oil pump belt. Refer to EM-16, "
ALTERNATOR AND POWER
STEERING OIL PUMP BELT" .
3. Remove A/C compressor belt. Refer to EM-16, "
A/C COMPRESSOR BELT" .
CAUTION:
Grease is applied to idler pulley adjusting bolt. Be careful to keep grease away from belt.
INSTALLATION
1. Install belts to pulley in reverse order of removal.
CAUTION:

Make sure drive belt is correctly engaged with pulley groove.

Make sure that for engine oil and engine coolant do not adhere to belt and each pulley grooves.
2. Adjust belt tension. Refer to EM-15, "
Tension Adjustment" .
3. Tighten each adjusting bolt and nut to the specified torque.
4. Make sure that tension of each belt is within the standard. Refer to EM-15, "
Checking Drive Belts" .
: 34.8 N·m (3.5 kg-m, 26 ft-lb)
SBIA0532E
: 34.8 N·m (3.5 kg-m, 26 ft-lb)

EM-48
[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
Revision: 2006 July 2007 FX35/FX45

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of foreign material.

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not
to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.

Insert new O-ring straight into fuel tube. Do not decenter or twist it.

Insert fuel damper and fuel sub-tube straight into fuel tube.

Tighten mounting bolts evenly in turn.

After tightening mounting bolts, make sure that there is no gap between flange and fuel tube.
2. Install new O-rings to fuel injector, paying attention to the following.
CAUTION:

Upper and lower O-ring are different. Be careful not to confuse them.

Handle O-ring with bare hands. Do not wear gloves.

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of foreign material.

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.

Insert O-ring straight into fuel injector. Do not decenter or twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip into clip mounting groove on fuel injector.

Insert clip so that protrusion “A” of fuel injector matches cutout
“A” of clip.
CAUTION:

Do not reuse clip. Replace it with a new one.

Be careful to keep clip from interfering with O-ring. If
interference occurs, replace O-ring.
b. Insert fuel injector into fuel tube with clip attached.

Insert it while matching it to the axial center.

Insert fuel injector so that protrusion “B” of fuel tube matches
cutout “B” of clip.

Make sure that fuel tube flange is securely fixed in flange fix-
ing groove on clip.
c. Make sure that installation is complete by checking that fuel injector does not rotate or come off.

Make sure that protrusions of fuel injectors are aligned with
cutouts of clips after installation.
4. Install spacers on intake manifold.
5. Install fuel tube and fuel injector assembly to intake manifold. CAUTION:
Be careful not to let tip of injector nozzle come in contact with other parts. Fuel tube side : Blue
Nozzle side : Brown
PBIC2545E

EM-62
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2006 July 2007 FX35/FX45
e. Tighten mounting bolts in numerical order as shown in the fig-
ure.
9. Install crankshaft pulley as follows:
a. Fix crankshaft using the ring gear stopper [SST: KV10117700 (J44716)].
b. Install crankshaft pulley, taking care not to damage front oil seal.

When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not circumference).
c. Tighten crankshaft pulley bolt.
d. Put a paint mark on crankshaft pulley aligning with angle mark on crankshaft pulley bolt.
e. Further tighten by 90 degrees. (Angle tightening)

Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
10. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns smoothly.
11. For the following operations, perform steps in the reverse order of removal. NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in the guide may gener-
ate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The followings are procedures for checking fluids leak, lubricates leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .

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
leakage 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.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
PBIC4821E

EM-82
[VQ35DE]
TIMING CHAIN
Revision: 2006 July 2007 FX35/FX45
c. Tighten crankshaft pulley bolt.
d. Put a paint mark on crankshaft pulley aligning with angle mark on crankshaft pulley bolt.
e. Further tighten by 90 degrees. (Angle tightening)

Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
19. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns smoothly.
20. For the following operations, perform steps in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .

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
leakage 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.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, or any oil/fluids including 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.
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
PBIC4821E
Item 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

EM-92
[VQ35DE]
CAMSHAFT
Revision: 2006 July 2007 FX35/FX45
INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 or P0021 are detected in self-diagnostic results of
CONSULT-II and it is directed according to inspection procedure of EC section. Refer to EC-121,
"SELF-DIAG RESULTS MODE" .

Check when engine ins cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-7, "
ENGINE OIL" .
2. Perform the following procedure so as to prevent the engine from being unintentionally started while checking.
a. Release fuel pressure. Refer to EC-85, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake valve timing control solenoid valve. Refer to EM-83, "
CAMSHAFT" .
4. Crank the engine, and then make sure that engine oil comes out from camshaft bracket (No. 1) oil hole. End crank after checking.
WARNING:
Be careful not to touch rotating parts (drive belts, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do
not allow engine oil to get on rubber components such as
drive belt or engine mount insulators. Immediately wipe off
any splashed engine oil.

Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from camshaft bracket (No. 1) oil hole. Refer to LU-5, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT), and then check each oil groove for clogging.

Clean oil groove if necessary. Refer to LU-5, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED 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
leakage 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.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, or any oil/fluids including 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.
PBIC2869E