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(1)Disconnect the No.1/No.2 knock sensor connectors(A,B), the oil pressure switch connector(C), the ignition coil
harness(D) and the No.1 VIS(Variable Induction System) connector(E).
(2)Disconnect the bank 1 front/rear O2 sensor connectors(A).
(3)Disconnect the injection connectors(A,B,C), the ground lines(D), the condenser connector(E) and the Ignition
coil connectors(F).
(4)Disconnect the injection harness connector(A), the No.2 VIS(Variable Induction System) connector(B), the
No.1/No.2 OCV(Oil Control Valve) connectors(C,D) and the OTS(Oil Temperature Sensor) connector(E).
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For best performance and maximum protection of all types of operation, select only those lubricants which :a. Satisfy the requirement of the API classification.
b. Have proper SAE grade number for expected ambient temperature range.
Lubricants that do not have both an SAE grade number and API service classification on the container should
not be used.
RELIEF SPRING
1.Check the relief plunger.
Apply engine oil on the plunger and check that it moves smoothly in the hole. If it does not, replace the plunger or
the front case only in necessary cases.
2. Check the relief valve spring.
Check deformation or damage of the relief valve spring.
Specification
Free length : 43.8mm(1.7244in.)
Load : 36.3N(3.7kg, 8.21b)±3.9N(0.4kg, 0.9lb) / 40.1mm(1.5787in.)
OIL PRESSURE SWITCH
1.Check the continuity between the terminal and the body with an ohmmeter.
If there is no continuity, replace the oil pressure switch.
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2.Check the continuity between the terminal and the body when its hole is pushed by a fine rod(A). If there is
continuity with pressed, replace the switch.
3.If there is no continuity when the pressure 49.3kpa (0.5kg/cm², 7.11psi) is applied through the oil hole, the switch
is operating properly.
Check for air leakage. If air leaks, the diaphragm is broken. Replace the switch.
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2007 > 2.7L V6 GASOLINE >
REMOVAL
INTAKE MANIFOLD ASSEMBLY
1. Remove the engine cover.
2. Remove the intake air hose and air cleaner assembly.
(1) Disconnect the MAF connector(A).
(2) Disconnect the breather hose(B) from air cleaner hose.
(3) Remove the intake air hose and air cleaner assembly(C).
3.Disconnect the engine wiring harness connectors.
(1) Disconnect the No.1/No.2 knock sensor connectors(A,B), the oil pressure switch connector(C), the ignition coil
harness(D) and the No.1 VIS(Variable Induction System) connector(E).
(2)Disconnect the bank 1 front/rear O2 sensor connectors(A).
(3)Disconnect the injection connectors(A,B,C), the ground lines(D), the condensor connector(E) and the Ignition
coil connectors(F).
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(4)Disconnect the injection harness connector(A), the No.2 VIS(Variable Induction System) connector(B), the
No.1/No.2 OCV(Oil Control Valve) connectors(C,D) and the OTS(Oil Temperature Sensor) connector(E).
(5)Disconnect the MAPS(Manifold Absolute Pressure Sensor) connector(A), the ETC(Electronic Throttle Control)
connector(B) and the PCSV(Purge Control Solenoid Valve) connector(C).
(6)Disconnect the generator connector(A) and the air conditioning compressor connector(B).
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2007 > 2.7L V6 GASOLINE >
DESCRIPTION
The CVVT (Continuously Variable Valve Timing) which is installed on the exhaust camshaft controls intake valve open
and close timing in order to improve engine performance.
The intake valve timing is optimized by CVVT system depending on engine rpm.
This CVVT system improves fuel efficiency and reduces NOx emissions at all levels of engine speed, vehicle speed,
and engine load by EGR effect because of valve over - lap optimization.
The CVVT changes the phase of the intake camshaft via oil pressure.
It changes the intake valve timing continuously.
OPERATION
The CVVT system makes continuous intake valve timing changes based on operating conditions.
Intake valve timing is optimized to allow the engine to produce maximum power.
Cam angle is advanced to obtain the EGR effect and reduce pumping loss. The intake valve is closed quickly to
reduce the entry of the air/fuel mixture into the intake port and improve the changing effect.
Reduces the cam advance at idle, stabilizes combustion, and reduces engine speed.
If a malfunction occurs, the CVVT system control is disabled and the valve timing is fixed at the fully retarded position.
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1.The above figure shows the relative operation structures of the housing vane to the rotor vane.
2. If the CVVT is held a certain control angle, to hold this state, oil is replenished as much as oil leaks from the oil
pump.
The OCV (Oil - flow Control Valve) spool location at this time is as follows.
Oil pump → Advance oil chamber (Little by little open the inflow side to the advance oil chamber) → Almost close the
drain side
Be sure there might be a difference in the position according to the engine running state (rpm, oil temperature, and oil
pressure).
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Heated oxygen sensor (Bank 2 / Sensor 2) installation3.5 ~ 4.534.3 ~ 44.1 25.3 ~ 32.6
Ignition coil installation bolt 1.0 ~ 1.29.8 ~ 11.8 7.2 ~ 8.7
Knock sensor [Bank 1] installation 1.9 ~ 2.418.6 ~ 23.5 13.7 ~ 17.4
Knock sensor [Bank 2] installation 1.9 ~ 2.418.6 ~ 23.5 13.7 ~ 17.4
Manifold absolute pressure sensor installation bolt 0.8 ~ 1.27.8 ~ 11.8 5.8 ~ 8.7
FUEL DELIVERY SYSTEM Item kgf·mN·mIbf·ft
Fuel tank band mounting nuts 4.0 ~ 5.539.2 ~ 53.9 28.9 ~ 39.8
Fuel pump assembly mounting bolts 0.2 ~ 0.32.0 ~ 2.91.4 ~ 2.2
Delivery pipe installation bolts 0.9 ~ 1.48.8 ~ 13.7 6.5 ~ 10.1
Accelerator pedal module installation bolts 1.3 ~ 1.612.8 ~ 15.7 9.4 ~ 11.6