Nissan Xterra. Manual — part 359
EM-64
< REMOVAL AND INSTALLATION >
[VQ40DE]
TIMING CHAIN
e. Remove stopper pins out from timing chain tensioners (second-
ary).
3. Install timing chain (primary) as follows:
a. Install crankshaft sprocket.
• Make sure the mating marks on crankshaft sprocket face the
front of engine.
b. Install the primary timing chain.
• Water pump (G).
• Install primary timing chain so the mating mark punched (B) on
camshaft sprocket is aligned with the blue link (A) on the tim-
ing chain, while the mating mark notched (E) on the crankshaft
sprocket (D) is aligned with the copper link (F) on the timing
chain, as shown.
• When it is difficult to align mating marks (A) with (B) and (E)
with (F) of the primary timing chain with each sprocket, gradu-
ally turn the camshaft to align it with the mating marks.
• During alignment, be careful to prevent dislocation of mating
mark alignments of the secondary timing chains.
PBIC2110E
SEM929E
WBIA0721E
TIMING CHAIN
EM-65
< REMOVAL AND INSTALLATION >
[VQ40DE]
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4. Install internal chain guide.
• If removed, reinstall slack guide.
CAUTION:
Do not overtighten slack guide bolts. It is normal for a gap
to exist under the bolt seats when bolts are tightened to
specification.
5. Remove stopper pin from primary timing chain tensioner.
6. Make sure again that the mating marks on camshaft sprockets and timing chain have not slipped out of
alignment.
7. Tighten camshaft sprocket bolts to specification with all timing chains installed and Ring Gear Stopper
Tool holding the crankshaft.
8. Install front timing chain case. Refer to
EM-51, "Removal and Installation"
INSPECTION AFTER INSTALLATION
• 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, "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 leak-
age 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.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
PBIC2109E
PBIC2633E
Tool number
: KV11105210 (J-44716)
EM-66
< REMOVAL AND INSTALLATION >
[VQ40DE]
TIMING CHAIN
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission/
transaxle fluid
A/T and CVT Models
Leakage
Level/Leakage
Leakage
M/T Models
Level/Leakage
Leakage
Level/Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
TIMING CHAIN TENSIONER
EM-67
< REMOVAL AND INSTALLATION >
[VQ40DE]
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TIMING CHAIN TENSIONER
Exploded View
INFOID:0000000009484473
Removal and Installation (Primary Timing Chain Tensioner)
INFOID:0000000009484474
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Remove engine under cover. Refer to
EXT-15, "Removal and Installation"
.
2. Partially drain engine coolant. Refer to
CO-11, "Changing Engine Coolant"
.
3. Remove lower fan shroud. Refer to
.
4. Disconnect crankcase ventilation hose and remove air duct and resonator assembly. Refer to
5. Disconnect mass air flow sensor and remove air cleaner case (upper). Refer to
.
6. Remove coolant reservoir hose.
7. Disconnect upper radiator hose from radiator.
8. Disconnect and remove engine cooling fan (Motor driven type). Refer to
CO-19, "Removal and Installation
.
9. Remove upper fan shroud. Refer to
.
10. Remove drive belt. Refer to
EM-13, "Removal and Installation"
.
AWBIA0859GB
1.
Internal chain guide
2.
O-ring
3.
Timing chain tensioner (secondary) (RH)
4.
Camshaft sprocket (EXH)
5.
Timing chain (secondary)
6.
Timing chain (primary)
7.
Camshaft sprocket RH (INT)
8.
Camshaft sprocket LH (INT)
9.
Slack guide
10. Timing chain tensioner (primary)
11. Crankshaft sprocket
12.
Timing chain tensioner (secondary) (LH)
13. O-ring
14. Tension guide
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