oil INFINITI QX4 2001 Factory Service Manual

SEM529G
SEM530G
23. Remove front suspension member bolts.
24. Lower the transmission jack carefully to secure clearance
between the oil pan and suspension member.
25. Remove A/T oil cooler tube.
26. Remove water hose and tube.
SEM469G
27. Remove the four engine-to-transmission bolts.
SEM463G
28. Remove aluminum oil pan bolts in numerical order.
SEM365E
29. Remove aluminum oil pan.
a. Insert tool between aluminum oil pan and cylinder block.
IBe careful not to damage aluminum mating surface.
IDo not insert screwdriver, or oil pan flange will be
deformed.
b. Slide tool by tapping its side with a hammer.
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OIL PAN
Removal (Cont'd)
EM-17

SEM464G
30. Remove O-rings from cylinder block and oil pump body.
SEM465G
31. Remove front cover gasket and rear oil seal retainer gasket.
SEM466G
InstallationNBEM00101. Before installing oil pan, remove old liquid gasket from mating
surface using a scraper.
IAlso remove old liquid gasket from mating surface of cyl-
inder block.
IRemove old liquid gasket from the bolt hole and thread.
SEM964E
2. Apply sealant to front cover gasket and rear oil seal retainer
gasket.
SEM465G
3. Install front cover gasket and rear oil seal retainer gasket.
OIL PAN
Removal (Cont'd)
EM-18

SEM159F
4. Apply a continuous bead of liquid gasket to mating surface of
aluminum oil pan.
IUse Genuine RTV silicone sealant Part No. 999MP-A7007
or equivalent.
SEM467G
5. Apply liquid gasket to inner sealing surface as shown in figure.
IBe sure liquid gasket is 4.0 to 5.0 mm (0.157 to 0.197 in)
or 4.5 to 5.5 mm (0.177 to 0.217 in) wide.
IAttaching should be done within 5 minutes after coating.
SEM464G
6. Install O-rings, cylinder block and oil pump body.
SEM468G
7. Install aluminum oil pan.
ITighten bolts in numerical order.
IWait at least 30 minutes before refilling engine oil.
SEM469G
8. Install the four engine-to-transmission bolts. For tightening
torque, refer to AT-278, ªInstallationº.
9. Reinstall in the revrse order of removal.
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OIL PAN
Installation (Cont'd)
EM-19

POSITION FOR APPLYING LIQUID GASKET=NBEM0011S01Refer to ªInstallationº in ªOIL PANº, EM-18.
IBefore installation, wipe off the protruding sealant.
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TIMING CHAIN
Components (Cont'd)
EM-21

CAUTION:
IAfter removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike piston heads.
IWhen installing camshafts, chain tensioners, oil seals, or
other sliding parts, lubricate contacting surfaces with new
engine oil.
IApply new engine oil to bolt threads and seat surfaces
when installing camshaft sprockets and crankshaft pulley.
IBefore disconnecting fuel hose, release fuel pressure.
Refer to EC-39, ªFuel Pressure Releaseº.
IBe careful not to damage sensor edges.
IDo not spill engine coolant on drive belts.
RemovalNBEM00121. Release fuel pressure.
Refer to EC-39, ªFuel Pressure Releaseº.
2. Remove battery.
3. Remove radiator.
Refer to LC-19, ªREMOVAL AND INSTALLATIONº.
4. Drain engine oil.
5. Remove drive belts and idler pulley with brackets.
6. Remove cooling fan with bracket.
7. Remove engine cover.
8. Remove air duct with air cleaner case, collector, blow-by hose,
vacuum hoses, fuel hoses, water hoses, wires, harnesses,
connectors and so on.
9. Remove the air compressor, and tie it down using rope or the
like to keep it from interfering.
10. Remove the power steering oil pump and reservoir tank. Tie
them down using rope or the like to keep them from interfer-
ing.
11. Remove alternator.
12. Remove the following.
IVacuum gallery
IWater bypass pipe
IBrackets
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TIMING CHAIN
Components (Cont'd)
EM-23

SEM415G
17. Disconnect injector harness connectors.
18. Remove fuel tube assembly in reverse order of installation.
Refer to EM-12, ªFuel Tubeº.
SEM416G
19. Remove ignition coils.
20. Remove RH and LH rocker covers from cylinder head.
SEM417G
21. Set No. 1 piston at TDC on the compression stroke by rotat-
ing crankshaft.
IAlign pointer with TDC mark on crankshaft pulley.
SEM418G
ICheck that intake and exhaust cam nose on No. 1 cylinder are
installed as shown left.
If not, turn the crankshaft one revolution (360É) and align as
above.
SEM485G
22. Remove starter motor, and set ring gear stopper using the
mounting bolt hole.
IBe careful not to damage the signal plate teeth.
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TIMING CHAIN
Removal (Cont'd)
EM-25

SEM419G
23. Loosen the crankshaft pulley bolt.
SEM420G
24. Remove crankshaft pulley with a suitable puller.
25. Remove aluminum oil pan.
Refer to EM-15, ªRemovalº.
26. Temporarily install the suspension member bolts and engine
mounting nuts.
SEM423G
27. Remove CVTC covers.
ILoosen bolts in numerical order as shown in the figure.
IIn the cover, the shaft is engaged with the center hole of the
intake cam sprocket. Remove it straight out until the engage-
ment comes off.
SEM424G
28. Remove front timing chain case bolts.
ILoosen bolts in numerical order as shown in the figure.
SEM156F
29. Remove front timing chain case.
IDo not scratch sealing surfaces.
TIMING CHAIN
Removal (Cont'd)
EM-26

SEM928E
InspectionNBEM0013Check for cracks and excessive wear at roller links. Replace
chain if necessary.
SEM930E
InstallationNBEM00141. Position crankshaft so that No. 1 piston is set at TDC on com-
pression stroke.
SEM929E
2. Install crankshaft sprocket on crankshaft.
IMake sure that mating marks on crankshaft sprocket face
front of engine.
SEM931E
3. Install lower chain guide on dowel pin, with front mark on the
guide facing upside.
SEM430G
4. Press and shrink the secondary chain tensioner sleeve, and fix
it using stopper pins.
ILubricate threads and seat surfaces of camshaft sprocket bolts
with new engine oil.
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TIMING CHAIN
Inspection
EM-29

SEM426G
7. After confirming the mating marks are aligned, tighten the cam-
shaft sprocket mounting bolts.
ISecure the camshaft hexagonal head using a spanner to
tighten mounting bolts.
SEM425G
8. Pull out the stopper pin from the secondary timing chain ten-
sioner.
SEM919EA
9. Install internal guide.
10. Install upper tension guide and slack guide.
SEM967F
11. Install timing chain tensioner, then remove the stopper pin.
IWhen installing the timing chain tensioner, engine oil
should be applied to the oil hole and tensioner.
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TIMING CHAIN
Installation (Cont'd)
EM-31

SEM439G
SEM440G
17. Install RH and LH rocker covers.
Rocker cover tightening procedure:
ITighten in numerical order as shown in the figure.
a. Tighten bolts 1 to 10 in that order to 6.9 to 8.8 N´m (0.7 to 0.9
kg-m, 61 to 78 in-lb).
b. Then tighten bolts 1 to 10 as indicated in figure to 6.9 to 8.8
N´m (0.7 to 0.9 kg-m, 61 to 78 in-lb).
18. Hang engine using the right and left side engine slingers with
a suitable hoist.
19. Set a suitable transmission jack under the suspension mem-
ber.
20. Remove right and left side engine mounting nuts.
21. Remove right and left side suspension member bolts.
22. Install aluminum oil pan. Refer to EM-18, ªInstallationº.
23. Set ring gear stopper using the mounting bolt hole.
IBe careful not to damage the signal plate teeth.
SEM417G
24. Install crankshaft pulley to crankshaft.
IAlign pointer with TDC mark on crankshaft pulley.
SEM531G
25. Install crankshaft pulley bolt.
ILubricate thread and seat surface of the bolt with new
engine oil.
a. Tighten to 39 to 49 N´m (4.0 to 5.0 kg-m, 29 to 36 ft-lb).
b. Put a paint mark on the crankshaft pulley.
SEM963E
c. Again tighten by turning 60É to 66É, about the angle from one
hexagon bolt head corner to another.
26. Install camshaft position sensor (PHASE), crankshaft position
sensors (REF)/(POS) and CVTC sensors.
27. Reinstall removed parts in the reverse order of removal.
IWhen installing fuel tube and intake manifold collectors, refer
to EM-12, ªTIGHTENING PROCEDURESº.
IAfter starting engine, keep idling for three minutes. Then
rev engine up to 3,000 rpm under no load to purge air from
the high-pressure chamber of the chain tensioners. The
engine may produce a rattling noise. This indicates that
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TIMING CHAIN
Installation (Cont'd)
EM-33