Nissan Quest E52. Manual — part 579
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ENGINE UNIT
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ENGINE UNIT
Disassembly
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1.
Remove drive belt. Refer to
EM-25, "Removal and Installation"
2.
Remove intake manifold collector. Refer to
3.
Remove intake manifold. Refer to
4.
Remove compressor. Refer to
HA-31, "COMPRESSOR : Removal and Installation"
.
5.
Remove alternator.
CHG-31, "Removal and Installation"
6.
Remove exhaust manifold. Refer to
.
7.
Remove oil pan (lower and upper). Refer to
8.
Remove ignition coil, spark plug and rocker cover. Refer to
.
9.
Remove fuel injector and fuel tube. Refer to
10. Remove timing chain and rear timing chain case. Refer to
EM-67, "Removal and Installation"
11. Remove camshaft. Refer to
12. Remove cylinder head. Refer to
Assembly
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Assembly in the reverse order of disassembly.
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EM-66
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TIMING CHAIN
TIMING CHAIN
Exploded View
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1.
Timing chain tensioner (secondary)
(bank 2)
2.
Internal chain guide
3.
Timing chain tensioner (secondary)
(bank 1)
4.
Oil temperature sensor
5.
Camshaft sprocket (EXH)
6.
O-ring
7.
Timing chain (secondary)
8.
Timing chain (primary)
9.
Camshaft sprocket (INT)
10. Slack guide
11. Timing chain tensioner (primary)
12.
Crankshaft sprocket
13. Rear timing chain case
14. Tension guide
15.
O-ring
16. O-ring
17. O-ring
18.
Front timing chain case
JPBIA2471GB
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TIMING CHAIN
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Removal and Installation
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REMOVAL
1.
Remove the following parts:
• Remove intake manifold collector. Refer to
EM-29, "Removal and Installation"
• Remove rocker covers (bank 1 and bank 2). Refer to
.
• Remove oil pans (lower and upper) and oil strainer. Refer to
• Remove drive belt and auto tensioner. Refer to
EM-13, "Removal and Installation"
.
2.
Separate engine harness removing their brackets from front timing chain case.
3.
Remove camshaft sprocket covers.
• Loosen mounting bolts in the reverse order as shown in the
figure.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
4.
Obtain No. 1 cylinder at TDC of its compression stroke as follows:
a.
Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) (
) with timing indicator.
19.
Camshaft sprocket cover gasket
(bank 1)
20. Camshaft sprocket cover (bank 1) 21.
Intake valve timing control solenoid valve
(bank 1)
22. Seal ring
23. Water pump cover
24.
Front oil seal
25. Crankshaft pulley
26. Crankshaft pulley bolt
27.
Intake valve timing control solenoid valve
(bank 2)
28. Camshaft sprocket cover (bank 2)
29.
Camshaft sprocket cover gasket
(bank 2)
A.
Comply with the assembly procedure
when tightening. Refer to
B.
Comply with the assembly proce-
dure when tightening. Refer to
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Should be lubricated with oil.
: Sealing point
A
: Bank 1
B
: Bank 2
C
: Dowel pin hole
JPBIA1639ZZ
SEM727G
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EM-68
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TIMING CHAIN
b.
Check that intake and exhaust cam noses on No. 1 cylinder
(engine front side of bank 1) are located as shown in the figure.
• If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
5.
Remove crankshaft pulley as follows:
a.
Fix crankshaft with the pulley holder (commercial service tool)
(A).
b.
Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.
CAUTION:
Never remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c.
Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Never put suitable puller tab on crankshaft pulley periphery,
as this will damage internal damper.
6.
Remove front timing chain case as follows:
a.
Loosen mounting bolts in the reverse order as shown in the fig-
ure.
: Engine front
JPBIA0044ZZ
1
: Crankshaft pulley
PBIC3961E
SEM915E
JPBIA1640ZZ
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