Infiniti QX4 (R50). Manual — part 414
Components
NBEM0008
SEM583G
Removal
NBEM0009
WARNING:
I
Place vehicle on a flat and solid surface.
I
You should not remove oil pan until exhaust system and
cooling system have completely cooled off.
Otherwise, you may burn yourself and/or fire may break
out in the fuel line.
I
When removing front engine mounting nuts, lift up slightly
engine for safety work.
CAUTION:
When removing the aluminum oil pan from engine, first
remove the crankshaft position sensors (POS and REF) from
the assembly.
Be careful not to damage sensor edges and signal plate teeth.
1.
Remove front RH and LH wheels.
2.
Remove battery.
3.
Remove oil level gauge.
4.
Remove engine undercover.
5.
Remove suspension member stay.
6.
Drain engine coolant from radiator drain plug.
7.
Disconnect A/T oil cooler hoses.
8.
Drain engine oil.
GI
MA
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
OIL PAN
Components
EM-15
9.
Remove the crankshaft position sensors (REF and POS).
10. Remove drive belts and idler pulley with bracket.
11. Remove power steering oil pump, then put it aside holding with
a suitable wire.
12. Remove alternator.
SEM605G
13. Install engine slingers.
14. Remove front propeller shaft. (4WD)
Refer to PD-6, “Removal and Installation”.
15. Remove exhaust front tube heat insulators, then remove rear
heat oxygen sensors.
16. Remove exhaust front tube from both sides.
Refer to FE-8, “Removal and Installation”.
17. Remove front final drive. (4WD)
Refer to PD-18, “Removal and Installation”.
18. Remove starter motor.
19. Disconnect oil pressure switch harness connector.
SEM528G
20. Loosen and disconnect the bolts fixing the steering column
assembly lower joint and the power steering gear.
SEM471G
21. Set a suitable transmission jack under the front suspension
member and hoist engine with engine slingers.
EMQ0357D
22. Remove front engine mounting nuts from both sides.
OIL PAN
Removal (Cont’d)
EM-16
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.
I
Be careful not to damage aluminum mating surface.
I
Do not insert screwdriver, or oil pan flange will be
deformed.
b.
Slide tool by tapping its side with a hammer.
GI
MA
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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
Installation
NBEM0010
1.
Before installing oil pan, remove old liquid gasket from mating
surface using a scraper.
I
Also remove old liquid gasket from mating surface of cyl-
inder block.
I
Remove 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
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