Infiniti QX4 (R50). Manual — part 425
Rear Engine Mounting
NBEM0042S0102
SEM459G
SEM605G
SEM461G
SEM324F
1.
Release fuel pressure.
Refer to EC-39, “Fuel pressure release”.
2.
Remove engine hood and front RH and LH wheels.
3.
Remove engine undercover and suspension member stay.
4.
Drain coolant from radiator.
5.
Remove the following parts.
I
Radiator shroud
I
Radiator
I
Cooling fan
I
Drive belts
I
Battery
I
Engine cover
I
Throttle wires
6.
Air duct with air cleaner case.
7.
Disconnect vacuum hoses, fuel hoses, heater hoses, EVAP
canister hoses, harnesses, connectors and so on.
8.
Remove air conditioner compressor from bracket, then put it
aside holding with a suitable wire.
9.
Remove power steering oil pump and reservoir tank with
bracket, then put it aside holding with a suitable wire.
10. Remove alternator.
11. Remove exhaust front tube heat insulators, then remove rear
heated oxygen sensors.
12. Remove exhaust front and rear tubes.
Refer to FE-8, “Removal and Installation”.
13. Remove transmission with transfer.
Refer to AT-277, “Removal”.
14. Remove TWC (manifold) heat insulators, then remove TWC
(manifold).
15. Install engine slingers.
16. Hoist engine with engine slingers and remove front engine
mounting nuts.
GI
MA
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
ENGINE ASSEMBLY
Removal and Installation (Cont’d)
EM-59
17. Remove engine from vehicle.
INSTALLATION
NBEM0042S02
Installation is in the reverse order of removal.
ENGINE ASSEMBLY
Removal and Installation (Cont’d)
EM-60
Components
NBEM0024
SEM584G
1.
Rear oil seal retainer
2.
Cylinder block
3.
Knock sensor
4.
Upper main bearing
5.
Lower main bearing
6.
Oil jet
7.
Water drain plug (RH side)
8.
Water drain plug (Water pump
side)
9.
Main bearing cap
10. Main bearing beam
11. Crankshaft
12. Pilot converter
13. Drive plate with signal plate
14. Drive plate reinforce plate
15. Oil ring
16. Piston pin
17. Connecting rod bearing
18. Connecting rod
19. Piston
20. Top ring
21. 2nd ring
22. Baffle plate
23. Water drain plug (LH side)
GI
MA
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
CYLINDER BLOCK
Components
EM-61
CYLINDER BLOCK HEATER
NBEM0024S02
SEM537G
SEM180FA
Removal and Installation
NBEM0025
CAUTION:
I
When installing bearings, pistons, or other sliding parts,
lubricate contacting surfaces with new engine oil.
I
Place removed parts such as bearings and bearing caps
in their proper order and direction.
I
When installing connecting rod nuts, and main bearing
cap bolts, apply new engine oil to threads and seating
surfaces.
I
Do not allow any magnetic materials to contact the signal
plate teeth of drive plate.
SEM190FA
Disassembly
NBEM0026
PISTON, CRANKSHAFT AND OIL JET
1.
Remove engine. Refer to “Removal and Installation”, EM-57.
2.
Place engine on a work stand.
3.
Drain coolant and oil.
4.
Remove oil pan. Refer to “Removal”, EM-15.
5.
Remove timing chain. Refer to “Removal”, EM-23.
6.
Remove cylinder head. Refer to “Removal”, EM-23.
CYLINDER BLOCK
Components (Cont’d)
EM-62
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