Nissan Maxima. Manual — part 535
EM-28
< REMOVAL AND INSTALLATION >
INTAKE MANIFOLD
INTAKE MANIFOLD
Removal and Installation
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REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain the coolant when the engine is hot.
1. Release the fuel pressure. Refer to
.
2. Disconnect the battery negative terminal. Refer to
PG-67, "Removal and Installation (Battery)"
3. Remove intake manifold collector. Refer to
EM-25, "Removal and Installation"
4. Disconnect fuel tube quick connector at vehicle piping side.
5. To remove the quick connector cap (1), hold the sides of the
connector (A), push in the tabs (2) and pull out the fuel tube (3).
CAUTION:
• The tube can be removed when the tabs are completely
depressed. Do not twist fuel tube.
• Do not use any tools to remove the quick connector.
• Keep the resin tube away from heat. Be especially careful
when welding near the tube.
• Prevent acid liquids such as battery electrolyte, etc. from
getting on the resin tube.
• Do not bend or twist the tube during removal or installa-
tion.
• Do not remove the remaining retainer on the tube.
• When the tube is replaced, also replace the retainer with a new one.
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1.
Intake manifold
2.
Intake manifold gaskets
A.
Refer to INSTALLATION
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INTAKE MANIFOLD
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• To keep the connecting portion clean and to avoid dam-
age and foreign materials entering, cover the ends of the
fuel tubes with plastic bags or something similar.
NOTE:
If the connector and the tube are stuck together, push and pull
several times until they start to move. Then disconnect them by
pulling.
6. Remove the fuel rail with the fuel injectors attached, from the
intake manifold. Remove the fuel injector O-rings and use new
O-rings for installation.
CAUTION:
Do not reuse O-rings.
7. Loosen the bolts in the order as shown, and remove the intake
manifold with power tool.
INSPECTION AFTER REMOVAL
Surface Distortion
• Using straightedge and feeler gauge, inspect the surface distortion
of the intake manifold.
INSTALLATION
CAUTION:
Do not reuse intake manifold gaskets.
Installation is in the reverse order of removal. Follow the procedure below for specific tightening sequences
and procedures.
• Install intake manifold bolts in two steps in the numerical order as
shown.
NOTE:
After installation, it is necessary to re-calibrate the electric throttle control actuator as follows:
PBIC0163E
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Standard
: 0.1 mm (0.004 in)
WBIA0052E
Step 1
: 7.4 N·m (0.75 kg-m, 65 in-lb)
Step 2
: 25.5 N·m (2.6 kg-m, 19 ft-lb)
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< REMOVAL AND INSTALLATION >
INTAKE MANIFOLD
1. Perform the "Throttle Valve Closed Position Learning" when harness connector of the electric throttle con-
trol actuator is disconnected. Refer to
EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING :
2. Perform the "Idle Air Volume Learning" when the electric throttle control actuator is replaced. Refer to
21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
• Install the quick connector as follows:
- Make sure no foreign substances are deposited in and around the fuel tube and quick connector and that
there is no damage.
- Align the center to insert the quick connector straight onto the fuel tube.
- Insert the fuel tube until a click is heard.
- Install the quick connector cap on the quick connector joint. Align
the arrow mark on the quick connector cap to the upper side.
- Install the fuel hose into the hose clamp.
INSPECTION AFTER INSTALLATION
Make sure there are no fuel leaks at connections as follows:
1. Apply fuel pressure to fuel lines by turning ignition switch ON with engine stopped. Then check for fuel
leaks at connections.
2. Start the engine and rev it up and check for fuel leaks at connections.
CAUTION:
Do not touch engine immediately after stopping as engine is extremely hot.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.
PBIC0662E
EXHAUST MANIFOLD AND THREE WAY CATALYST
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Exploded View
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Removal and Installation (LH)
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REMOVAL
WARNING:
• Perform the work when the exhaust system has completely cooled down.
• When removing the front and rear engine mounting through bolts and nuts, lift the engine up slightly
for safety.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
1.
Gasket
2.
Exhaust manifold (RH)
3.
Exhaust manifold heat shield (RH)
4.
Air fuel ratio sensor 1 (bank 1)
5.
Ring gasket
6.
Three way catalyst (bank 1)
7.
Three way catalyst support (bank 1)
8.
Heated oxygen sensor 2 (bank 1)
9.
Three way catalyst (bank 2)
10. Three way catalyst support (bank 2)
11. Heated oxygen sensor 2 (bank 2)
12.
Ring gasket
13. Exhaust manifold (LH)
14. Exhaust manifold heat shield (LH)
15.
Air fuel ratio sensor 1 (bank 2)
A.
To oil pan (upper)
B.
Upper mark
Engine front
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