2006 INFINITI M35 suspension

EM-188
[VK45DE]
OIL PAN AND OIL STRAINER
Revision: 2006 January2006 M35/M45
4. Install engine slingers into front of cylinder head (left bank) and
rear of cylinder head (right bank).
5. Remove engine mounting insulators (RH and LH) under side nut with power tool.
6. Lift with hoist and separate engine and transmission assembly from front suspension member.
CAUTION:
Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
7. Remove harness bracket from oil pan.
8. Remove oil filter. Refer to LU-29, "
OIL FILTER" .
9. Remove oil pan as the follows:
a. Remove rear plate cover.
b. Remove transmission joint bolts which pierce oil pan. Refer to AT-271, "
TRANSMISSION ASSEMBLY" .
c. Loosen mounting bolts with power tool in reverse order as
shown in the figure.
NOTE:
Disregard the numerical order No. 11 and 17 in removal.
d. Insert seal cutter (SST) between oil pan and cylinder block.
Slide seal cutter by tapping on the side of seal cutter with ham-
mer. Remove oil pan.
CAUTION:
Be careful not to damage the mating surfaces.
Do not insert screwdriver, this will damage the mating
surface.
e. Remove O-rings from bottom of oil pump and front cover.
10. Remove oil pressure switch, as necessary. Refer to LU-26, "
OIL PRESSURE CHECK" .
11. Remove oil strainer.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil strainer.
2. Install oil pan as follows:
a. Use scraper to remove old liquid gasket from mating surfaces.
Also remove the old liquid gasket from mating surface of cylinder block.
Remove old liquid gasket from the bolt holes and threads.Slinger bolts:
:33.4 Nꞏm (3.4 kg-m, 25 ft-lb)
PBIC2447E
PBIC0194E
SEM365E

ENGINE ASSEMBLY
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Revision: 2006 January2006 M35/M45
Always use the support point specified for lifting.
Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.
For supporting points for lifting and jacking point at rear axle, refer to GI-42, "Garage Jack and
Safety Stand and 2-Pole Lift" .
REMOVAL
Outline
At first, remove engine, transmission assembly with front suspension member from vehicle downward. Then
separate engine from transmission.
Preparation
1. Release fuel pressure. Refer to EC-809, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-40, "
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 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 where they are exposed to magnetism.
5. Remove the following parts:
Front and rear engine undercover (power tool)
Air duct (inlet), air duct and air cleaner case assembly; Refer to EM-177, "AIR CLEANER AND AIR
DUCT" .
Front road wheels and tires (power tool)
Engine Room LH
1. Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.
2. Disconnect wire bonding from exhaust manifold cover to vehicle.
3. Disconnect vacuum hose between vehicle and engine and set it aside.
4. Discharge refrigerant from A/C circuit. Refer to ATC-151, "
REFRIGERANT LINES" .
5. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
151, "REFRIGERANT LINES" .
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-193, "FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
Fit plugs onto disconnected hose to prevent fuel leak.
2. Disconnect ground cable (between vehicle and right bank cylinder head).
3. Disconnect vacuum hose between vehicle and engine and set it aside.
4. Disconnect reservoir tank of power steering oil pump from engine, and move it aside for easier work.
CAUTION:
When temporarily securing, keep reservoir tank upright to avoid a fluid leak.
Ve h i c le i n s i d e
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.

EM-246
[VK45DE]
ENGINE ASSEMBLY
Revision: 2006 January2006 M35/M45
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.
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. Refer to EX-3, "
EXHAUST SYSTEM" .
3. Remove exhaust front tube with power tool. 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. Separate steering outer sockets from steering knuckle. Refer to PS-18, "
POWER STEERING GEAR" .
6. 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-222, "
SHIFT CONTROL SYSTEM" .
7. Remove rear plate cover from oil pan. Then remove bolts fixing drive plate to torque converter. Refer to
EM-187, "
OIL PAN AND OIL STRAINER" and AT-271, "TRANSMISSION ASSEMBLY" .
8. Remove transmission joint bolts which pierce at oil pan lower rear side. Refer to AT- 2 7 1 , "
TRANSMIS-
SION ASSEMBLY" .
9. Remove lower ends of left and right strut from transverse link. Refer to FSU-6, "
FRONT SUSPENSION
ASSEMBLY" .
10. Remove transverse link mounting bolts at knuckle side. Refer to FSU-14, "
TRANSVERSE LINK" .
11. Remove front stabilizer at transverse link side. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
12. Remove rear propeller shaft. Refer to PR-6, "
REAR PROPELLER SHAFT" .
Removal Work
1. Use manual lift table caddy (commercial service tool) or equiva-
lently rigid tool such as transmission jack. Securely support bot-
tom of suspension member and transmission assembly.
CAUTION:
Put a piece of wood or something similar as the supporting
surface, secure a completely stable condition.
2. Remove engine rear member mounting bolts.
3. Remove front suspension member mounting nuts and bolts with power tool. Refer to FSU-6, "
FRONT
SUSPENSION ASSEMBLY" .
4. Carefully lower jack, or raise lift to remove engine, transmission and front suspension member assembly.
When performing work, observe the following caution:
CAUTION:
Confirm there is no interference with 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 vehicle
at rear jacking point(s) to prevent it from falling it off the lift.
PBIC0804E

ENGINE ASSEMBLY
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Revision: 2006 January2006 M35/M45
Separation Work
1. Install engine slingers into front of cylinder head (left bank) and
rear of cylinder head (right bank).
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:
Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
5. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
6. Separate engine from transmission assembly. Refer to AT-271, "
TRANSMISSION ASSEMBLY" .
7. Remove engine mounting insulators (RH and LH) and brackets (RH and LH) from engine with power tool.
8. Remove rear engine mounting 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 EM-244, "Components" .
When installing engine mounting brackets (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).
NOTE:
Figure shows LH bank.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedure 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.Slinger bolts:
:33.4 Nꞏm (3.4 kg-m, 25 ft-lb)
PBIC2447E
PBIC3305E

EM-250
[VK45DE]
CYLINDER BLOCK
Revision: 2006 January2006 M35/M45
Disassembly and AssemblyNBS004PN
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 separate front suspension member, transmission from
engine. Refer to EM-244, "
ENGINE ASSEMBLY" .
2. Remove the parts that may restrict installation of engine to widely use engine stand.
NOTE:
The procedure is described assuming that you use widely 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 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 240kg (529 lb) or more] large enough for
supporting the engine weight.
If the load capacity of stand is not adequate, remove the following parts beforehand to reduce the
potential risk of overturning stand.
–Intake manifolds (upper and lower); Refer to EM-179, "INTAKE MANIFOLD" .
–Exhaust manifold and three way catalyst; Refer to EM-183, "EXHAUST MANIFOLD AND THREE WAY
CATALYST" .
13. Piston pin 14. Connecting rod bearing 15. Connecting rod bearing cap
16. Block heater protector 17. Connector cap 18. Cylinder block heater
19. Gasket 20. Main bearing cap 21. Thrust bearing
22. Main bearing 23. Rear plate 24. Crankshaft
25. Pilot convertor 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
PBIC1656E
PBIC2367E

FAX-4
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2006 January2006 M35/M45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000FE
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
: ApplicableReference page
—
FA X - 1 4—
FAX-5—
FAX-5
NVH in FAX and FSU sections
Refer to Front axle in this chart.
NVH in WT section
NVH in WT section
Refer to DRIVE SHAFT in this chart.
NVH in BR section
NVH in PS section
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
Wheel bearing damage
FRONT AXLE AND FRONT SUSPENSION
FRONT AXLE
TIRES
ROAD WHEELS
DRIVE SHAFT
BRAKES
STEERING
SymptomDRIVE
SHAFTNoise
Shake
FRONT
AXLENoise
Shake
Vibration
Shimmy
Judder
Poor quality ride or handling

FFD-6
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2006 January2006 M35/M45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000EO
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
: ApplicableReference page
Refer to FFD-24, "
INSPECTION AFTER DISASSEMBLY
" .
Refer to FFD-17, "
Tooth Contact
" .
Refer to FFD-24, "
INSPECTION AFTER DISASSEMBLY
" .
Refer to FFD-19, "
Backlash
" .
Refer to FFD-19, "
Companion Flange Runout
" .
Refer to FFD-8, "
Checking Differential Gear Oil
" .
NVH in PR section.
NVH in FAX, RAX, FSU and RSU sections.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom Noise

FRONT FINAL DRIVE ASSEMBLY
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Revision: 2006 January2006 M35/M45
FRONT FINAL DRIVE ASSEMBLYPFP:38500
Removal and InstallationNDS000EU
COMPONENTS
REMOVAL
1. Remove front drive shaft both. Refer to FA X - 11 , "Removal and Installation" .
2. Remove front crossbar with power tool.
3. Separate steering outer socket and steering knuckle. Refer to PS-18, "
POWER STEERING GEAR" .
4. Remove side shaft.
5. Remove three way catalyst (right bank) with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
6. Remove front propeller shaft. Refer to PR-5, "
Removal and Installation" .
7. Separate EPS solenoid valve connector.
8. Separate power steering hydraulic line.
9. Remove stabilizer assembly with power tool. Refer to FSU-35, "
Removal and Installation" .
10. Separate steering lower joint and steering gear assembly. Refer to PS-18, "
POWER STEERING GEAR" .
11. Set a suitable jack to engine.
12. Remove front suspension member with power tool. Refer to FSU-26, "
Removal and Installation" .
13. Remove breather hose and tube.
14. Remove engine mounting bracket (RH) (Lower) and engine mounting insulator (RH) with power tool.
Refer to EM-118, "
Removal and Installation (AWD Models)" .
15. Remove front final drive assembly with power tool.
1. Front final drive assembly 2. Side shaft 3. Bushing
4. Front propeller shaft 5. Breather hose 6. Breather tube
7. Breather connector 8. Engine mounting bracket (RH)
(Lower)9. Engine mounting insulator (RH)
Refer to GI-11, "
Components" , for the symbols in the figure.
PDIA0789J