steering INFINITI M35 2006 Factory Service Manual

EM-54
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FRONT TIMING CHAIN CASE
Revision: 2006 January2006 M35/M45
FRONT TIMING CHAIN CASEPFP:13599
Removal and InstallationNBS004NI
NOTE:
This section describes removal/installation procedure of front timing chain case and timing chain related
parts without removing oil pan (upper) on the vehicle.
When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or
installed, remove oil pans (upper and lower) first. Then remove front timing chain case, timing chain
related parts, and rear timing chain case in this order, and install in reverse order of removal. Refer to EM-
64, "TIMING CHAIN" .
Refer to EM-64, "TIMING CHAIN" for component parts location.
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-14, "ENGINE ROOM COVER" .
2. Disconnect the battery cable from the negative terminal. Refer to SC-4, "
BATTERY" .
3. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
4. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT"
.
5. Remove front and rear engine undercover with power tool.
6. Release the fuel pressure. Refer to EC-98, "
FUEL PRESSURE RELEASE" .
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 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. Separate engine harnesses removing their brackets from front timing chain case.
11. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
12. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
13. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-29, "
POWER STEERING OIL PUMP" .
14. Remove power steering oil pump bracket. Refer to PS-29, "
POWER STEERING OIL PUMP" .
15. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
16. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
17. Remove intake valve timing control covers.
Loosen mounting bolts in reverse order as shown in the fig-
ure.
U s e t h e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ( J 3 7 2 2 8 ) ] t o c u t l i q u i d
gasket for removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
SEM728G

FRONT TIMING CHAIN CASE
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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
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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)

TIMING CHAIN
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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

CAMSHAFT
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Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Va l v e C l e a r a n c eNBS004NN
INSPECTION
Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
In cases of removing/installing or replacing camshaft and valve-
related parts, or of unusual engine conditions due to changes in
valve clearance (found malfunctions during stating, idling or causing
noise), perform inspection as follows:
1. Remove rocker covers (right and left bank). Refer to EM-51, "
ROCKER COVER" .
2. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.
Rotate crankshaft pulley clockwise to align timing mark
(grooved line without color) with timing indicator.
Make sure that intake and exhaust cam nose on No. 1 cylin-
der (engine front side of right bank) are located as shown in
the figure.
If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
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
SEM713A
KBIA1717J
SEM418G

CYLINDER HEAD
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Revision: 2006 January2006 M35/M45
e. Turn all cylinder head bolts 90 degrees clockwise (angle tighten-
ing).
CAUTION:
Check the tightening angle by using the angle wrench
(SST). Avoid judgment by visual inspection without SST.
Check tightening angle indicated on the angle wrench indica-
tor plate.
f. Turn all cylinder head bolts 90 degrees clockwise again (angle
tightening).
4. After installing cylinder head, measure distance between front
end faces of cylinder block and cylinder head (left and right
banks).
If measured value is out of the standard, re-install cylinder
head.
5. Install in the reverse order of removal after this step.
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 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.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, 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.
PBIC0888E
Standard : 14.1 - 14.9 mm (0.555 - 0.587 in)
EMQ0662D
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
Exhaust gases — Leakage —

EM-114
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2006 January2006 M35/M45
REMOVAL
Outline
At first, remove the engine and the transmission assembly with front suspension member from vehicle down-
ward. Then separate the engine from transmission.
Preparation
1. Release fuel pressure. Refer to EC-98, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
3. Disconnect both battery cables. Refer to SC-4, "
BATTERY" .
4. Remove the following parts:
Engine room cover (RH and LH); Refer toEM-14, "ENGINE ROOM COVER" .
Engine cover; Refer to EM-19, "INTAKE MANIFOLD COLLECTOR" .
Front road wheel and tires (power tool)
Front and rear engine undercover (power tool)
Cowl top cover (RH); Refer to EI-18, "COWL TOP" .
Air duct and air cleaner case assembly; EM-17, "AIR CLEANER AND AIR DUCT" .
5. Discharge refrigerant from A/C circuit. Refer to ATC-151, "
REFRIGERANT LINES" .
6. Remove radiator hoses (upper and lower). Refer to CO-14, "
RADIATOR" .
Engine Room LH
1. Disconnect heater hose from vehicle-side, and fit a plug onto hose end to prevent engine coolant leak.
2. Disconnect wire bonding (between vehicle to left bank cylinder head).
3. Disconnect A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to
AT C - 1 5 1 , "
REFRIGERANT LINES" .
4. Disconnect brake booster vacuum hose.
Engine Room RH
1. Disconnect battery positive cable at vehicle side and temporarily fasten it on engine.
2. Disconnect grounding cable.
3. Disconnect fuel feed hose (with damper) and EVAP hose. Refer to EM-45, "
FUEL INJECTOR AND FUEL
TUBE" .
CAUTION:
Fit plugs onto disconnected hoses to prevent fuel leak.
4. Remove reservoir tank of power steering oil pump and piping from vehicle, and temporarily secure them
on engine. Refer to PS-29, "
POWER STEERING OIL PUMP" .
CAUTION:
When temporarily securing, keep the reservoir tank upright to avoid a fluid leak.
Vehicle inside
Follow procedure below to disconnect engine room harness connectors at passenger room side, and tempo-
rarily secure them on engine.
1. Remove passenger-side kicking plate, dash side finisher, and glove box. Refer to EI-37, "
BODY SIDE
TRIM" and IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Disconnect engine room harness connectors at unit sides TCM, ECM and other.
3. Disengage intermediate fixing point. Pull out engine room harnesses to engine room side, and temporarily
secure them on engine.
CAUTION:
When pulling out harnesses, take care not to damage harnesses and connectors.
After temporarily securing, cover connectors with vinyl or similar material to protect against for-
eign material adhesion.

ENGINE ASSEMBLY
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Vehicle Underbody
1. Remove A/T fluid cooler hoses and power steering oil pump oil cooler hoses.
Install plug to avoid leakage of A/T fluid and power steering fluid.
2. Disconnect heated oxygen sensor 2 harness.
3. Remove three way catalyst and exhaust front tube. Refer to EX-3, "
EXHAUST SYSTEM" .
4. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-13, "
STEERING COLUMN" .
5. Remove rear propeller shaft. Refer to PR-6, "
REAR PROPELLER SHAFT" .
6. Disengage A/T control rod at control device assembly side. Then, temporarily secure it on the transmis-
sion assembly, so that it does not sag. Refer to AT- 2 2 2 , "
SHIFT CONTROL SYSTEM" .
7. Remove rear plate cover from oil pan (upper). Then remove bolts fixing drive plate to torque converter.
Refer to EM-29, "
OIL PAN AND OIL STRAINER" and AT- 2 7 1 , "TRANSMISSION ASSEMBLY" .
8. Remove transmission joint bolts which pierce at oil pan (upper) lower rear side. Refer to AT- 2 7 1 , "
TRANS-
MISSION ASSEMBLY" .
9. Remove front stabilizer at transverse link side. Refer to FSU-18, "
STABILIZER BAR" .
10. Remove lower ends of left and right strut from transverse link. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
11. Separate steering outer sockets from steering knuckle. Refer to PS-18, "
POWER STEERING GEAR" .
12. Remove transverse links mounting bolts at knuckle side. Refer to FSU-14, "
TRANSVERSE LINK" .
Removal Work
1. Use a manual lift table caddy (commercial service tool) or equiv-
alently rigid tool such as a transmission jack. Securely support
bottom of suspension member and the transmission assembly.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
2. Remove rear engine mounting member bolts.
3. Remove front suspension member mounting bolts and nuts. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
4. Carefully lower jack, or raise lift to remove the engine, the transmission assembly and front suspension
member. When performing work, observe the following caution:
CAUTION:
Confirm there is no interference with the vehicle.
Make sure that all connection points have been disconnected.
Keep in mind the center of vehicle gravity changes. If necessary, use jack(s) to support the vehi-
cle at rear jacking point(s) to prevent it from falling it off the lift.
Separation Work
1. Install engine slingers into front of cylinder head (right bank) and
rear of cylinder head (left bank).
PBIC0804E
Slinger bolts:
: 28.0 Nꞏm (2.9 kg-m, 21 ft-lb)
PBIC2061E

EM-116
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ENGINE ASSEMBLY
Revision: 2006 January2006 M35/M45
To protect rocker cover against damage caused by tilting of
engine slinger, insert spacer between cylinder head and
engine rear lower slinger, in direction shown in the figure.
NOTE:
Spacer is a component part of engine rear upper slinger
assembly.
2. Remove power steering oil pump from engine side. Refer to PS-29, "
POWER STEERING OIL PUMP" .
3. Remove engine mounting insulators (RH and LH) under side nuts with power tool.
4. Lift with hoist and separate the engine and the transmission assembly from front suspension member.
CAUTION:
Before and during this lifting, always make sure that any harnesses are left connected.
Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
5. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
6. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
7. Separate the engine from the transmission assembly. Refer to AT- 2 7 1 , "
TRANSMISSION ASSEMBLY" .
8. Remove each engine mounting insulator and each engine mounting bracket from the engine with power
tool.
INSTALLATION
Note the following, and install in the reverse order of removal.
Do not allow engine mounting insulator to be damage and careful no 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 EM-29, "Components (2WD
Models)" .
When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).
Make sure all engine mounting insulators are seated properly, then tighten mounting nuts.
Tighten rear engine mounting member bolts in numerical order
as shown in the figure.
KBIA1017E
PBIC2062E
Vehicle front
KBIA3557J

ENGINE ASSEMBLY
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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 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.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, 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
Exhaust gases — Leakage —