2006 INFINITI M35 crankshaft

EM-30
[VQ35DE]
OIL PAN AND OIL STRAINER
Revision: 2006 January2006 M35/M45
3. Remove hood assembly. Refer to BL-15, "HOOD" .
4. Remove engine room cover (RH and LH). Refer to EM-14, "
ENGINE ROOM COVER" .
5. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
6. Remove air duct (inlet). Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
7. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine oil on drive belts.
8. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
9. Remove air duct from air cleaner case. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
10. Remove stabilizer clamp, and then obtain the space under the oil pan (lower) by lowering the stabilizer.
Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
NOTE:
If the oil pan (upper) is removed, this procedure is not necessary.
11. Install engine slinger to sling engine assembly for positioning. Refer to EM-113, "
ENGINE ASSEMBLY" .
12. Remove front suspension member. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
13. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
14. Remove alternator stay. Refer to SC-23, "
CHARGING SYSTEM" .
15. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
16. Remove idler pulley and bracket assembly. Refer to EM-64, "
TIMING CHAIN" .
17. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-14, "
OIL
COOLER" .
18. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT- 2 7 1 , "
TRANSMISSION
ASSEMBLY" .
19. Remove crankshaft position sensor (POS).
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 where they are exposed to magnetism.
20. Remove oil filter, as necessary. Refer to LU-10, "
OIL FILTER" .
21. Remove oil cooler, as necessary. Refer to LU-14, "
OIL COOLER" .
22. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in reverse order as shown in the figure to
remove.Slinger bolts:
: 28.0 Nꞏm (2.9 kg-m, 21 ft-lb)
PBIC0782E

OIL PAN AND OIL STRAINER
EM-35
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Revision: 2006 January2006 M35/M45
Components (AWD Models)NBS004N8
Refer to GI-11, "Components" for symbol marks in the figure.
1. Oil pressure switch 2. Oil filter bracket 3. Relief valve
4. O-ring 5. Oil cooler 6. Connector bolt
7. Oil filter 8. O-ring 9. Gasket
10. Oil pan gasket (front) 11. Oil strainer 12. Drain plug
13. Drain plug washer 14. Oil pan (lower) 15. Rear plate cover
16. O-ring (small) 17. Axle pipe 18 O-ring (large)
19. Crankshaft position sensor (POS) 20. Seal rubber 21. Oil pan (upper)
22. Oil pan gasket (rear)
A. Refer to LU-10
B. To oil pump C. Oil pan side
KBIA3553J

EM-36
[VQ35DE]
OIL PAN AND OIL STRAINER
Revision: 2006 January2006 M35/M45
Removal and Installation (AWD Models)NBS004N9
REMOVAL
CAUTION:
To avoid the danger of being scalded, never drain engine oil when the engine is hot.
NOTE:
When removing oil pan (lower) only, steps 2 to 6 are not necessary. Perform step 25 after completing step 7.
1. Remove front and rear engine undercover with power tool.
2. Remove front tire.
3. Remove hood assembly. Refer to BL-15, "
HOOD" .
4. Remove engine room cover (RH and LH). Refer to EM-14, "
ENGINE ROOM COVER" .
5. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
6. Remove air duct (inlet). Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
7. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine oil on drive belts.
8. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
9. Remove air duct from air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
10. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
11. Remove front drive shaft (RH and LH). Refer to FA X - 8 , "
FRONT DRIVE SHAFT" .
12. Remove side shaft. Refer to FFD-13, "
FRONT FINAL DRIVE ASSEMBLY" .
13. Install engine slinger to sling engine assembly for positioning. Refer to EM-113, "
ENGINE ASSEMBLY" .
14. Remove front suspension member. Refer to Refer to FSU-23, "
FRONT SUSPENSION ASSEMBLY" .
15. Remove engine mounting bracket, engine mounting bracket (lower) and insulator. Refer to EM-113,
"ENGINE ASSEMBLY" .
16. Remove front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
17. Remove oil filter and oil filter bracket. Refer to LU-12, "
OIL FILTER BRACKET (AWD)" .
18. Remove alternator stay. Refer to SC-23, "
CHARGING SYSTEM" .
19. Remove idler pulley and bracket. Refer to EM-15, "
DRIVE BELTS" .
20. Disconnect oil cooler water hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-14, "
OIL
COOLER" .
21. Disconnect A/T fluid cooler hoses, and remove A/T fluid cooler tube. Refer to AT- 2 7 1 , "
TRANSMISSION
ASSEMBLY" .
22. Remove front final drive assembly. Refer to FFD-13, "
FRONT FINAL DRIVE ASSEMBLY" .
23. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
24. Remove crankshaft position sensor (POS).
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 where they are exposed to magnetism.
25. Remove oil pan (lower) as follows:Slinger bolts:
: 28.0 Nꞏm (2.9 kg-m, 21 ft-lb)

FRONT TIMING CHAIN CASE
EM-55
[VQ35DE]
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Revision: 2006 January2006 M35/M45
18. Remove collared O-ring from front timing chain case (left and
right side).
19. Remove rocker covers (right and left banks). Refer toEM-51, "
ROCKER COVER" .
NOTE:
When only timing chain (primary) is removed, rocker cover does not need to be removed.
20. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
NOTE:
When timing chain is not removed/installed, this step is not required.
a. Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.
b. Make sure that intake and exhaust cam noses on No. 1 cylinder
(engine front side of right bank) are located as shown in the fig-
ure.
If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
NOTE:
When only timing chain (primary) is removed, rocker cover does
not need to be removed. To make sure that No. 1 cylinder is at
its compression TDC, remove front timing chain case first. Then
check mating marks on camshaft sprockets. Refer to EM-72,
"INSTALLATION" .
21. Remove crankshaft pulley as follows:
a. Remove rear cover plate (2WD models) or starter motor (AWD
models) and set ring gear stopper (SST) as shown in the figure.
Refer to SC-10, "
STARTING SYSTEM" .
PBIC2631E
KBIA1717J
SEM418G
PBIC1098E

EM-56
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2006 January2006 M35/M45
b. Loosen crankshaft pulley bolt and locate bolt seating surface as
10 mm (0.39 in) from its original position.
CAUTION:
Do not remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.
22. Remove oil pan (lower). Refer to EM-29, "
OIL PAN AND OIL STRAINER" .
23. Loosen two mounting bolts in front of oil pan (upper) with power
tool in reverse order shown in figure.
24. Remove front timing chain case as follows:
a. Loosen mounting bolts with power tool in reverse order as
shown in the figure.
PBIC1103E
EMQ0477D
PBIC1116E
KBIA1303E

EM-62
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2006 January2006 M35/M45
c. Install new collared O-rings in front timing chain case oil hole
(left and right sides).
d. Being careful not to move seal ring from the installation groove, align dowel pins on front timing chain
case with the holes to install intake valve timing control covers.
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. Place a matching mark (A) on crank pulley (1) aligning with the
matching (B) of crank pulley mounting bolt (2). Tighten the bolts
90 degrees (one marks).
NOTE:
The figure shows crank pulley bolt with four marks.
Use an angle wrench (SST) for a crankshaft pulley bolt with
six–marks.
PBIC2631E
PBIC0918E
: 44.1 Nꞏm (4.5 kg-m, 33 ft-lb)
PBIC4627J
PBIC3821E

FRONT TIMING CHAIN CASE
EM-63
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Revision: 2006 January2006 M35/M45
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.
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 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 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. 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

TIMING CHAIN
EM-65
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Revision: 2006 January2006 M35/M45
Removal and InstallationNBS004NK
NOTE:
This section describes procedures for removing/installing front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.
To remove/install front timing chain case, timing chain, and its related parts without removing oil pan
(upper), refer to EM-54, "
FRONT TIMING CHAIN CASE" .
REMOVAL
1. Remove engine room cover (RH and LH) Refer to EM-14, "ENGINE ROOM COVER" .
2. Remove front tire.
3. Disconnect the battery cable from the negative terminal.
4. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
5. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT"
.
6. Remove front and rear engine undercover with power tool.
7. Release the fuel pressure. Refer to EC-98, "
FUEL PRESSURE RELEASE" .
8. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
9. Remove radiator hose (upper and lower) and A/T fluid cooler hose. Refer to CO-14, "
RADIATOR" .
10. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine oil on drive belts.
11. Separate engine harnesses removing their brackets from front timing chain case.
12. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
13. Remove radiator cooling fan assembly. Refer to CO-22, "
COOLING FAN" .
14. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
15. Remove A/C compressor from bracket with piping connected, and temporarily secure it aside. Refer to
ATC-155, "
Removal and Installation of Compressor" .
16. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-29, "
POWER STEERING OIL PUMP" .
17. Remove power steering oil pump bracket. Refer to PS-29, "
POWER STEERING OIL PUMP" .
18. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
19. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
20. Remove intake valve timing control covers.
1. Timing chain tensioner (secondary) 2. Internal chain guide 3. Timing chain tensioner (secondary)
4. Camshaft sprocket (EXH) 5. Timing chain (secondary) 6. Timing chain (primary)
7. Camshaft sprocket (INT) 8. Camshaft sprocket (EXH) 9. Timing chain (secondary)
10. Camshaft sprocket (INT) 11. Slack guide 12. Crankshaft sprocket
13. Timing chain tensioner (primary) 14. Intake valve timing control cover 15. Collared O-ring
16. O-ring 17. Chain tensioner cover 18. Intake valve timing control cover
19. Water hose clamp 20. Idler pulley bracket 21. Idler pulley
22. Crankshaft pulley 23. Front oil seal 24. Idler pulley
25. A/C compressor bracket 26. Water pump cover 27. Bracket
28. Front timing chain case 29. Bracket 30. Rear timing chain case
31. O-ring 32. Tension guide 33. Water drain plug (front side)