Nissan Altima 2007-2012 Service Manual: Oil pump
Removal and Installation
REMOVAL
1. Remove the timing chain. Refer to EM-163, "Removal".
2. Remove oil pump assembly.
INSTALLATION
Installation is in the reverse order of removal.
Disassembly and Assembly
1. Oil pump housing
2. Outer rotor
3. Inner rotor
4. Oil pump cover
5. O-ring
6. Regulator valve set
7. Regulator valve
8. Spring
9. Regulator plug
10. Oil strainer
CAUTION: Before assembly apply new engine oil to the parts as shown above.
DISASSEMBLY
1. Remove the oil pump cover.
2. Remove inner rotor and outer rotor from oil pump housing.
3. Remove oil strainer from oil pump housing.
4. After removing regulator plug, remove spring and regulator valve.
INSPECTION AFTER DISASSEMBLY
Clearance of Oil Pump Parts
• Measure clearance with feeler gauge.
• Clearance between outer rotor and oil pump body (position 1).
Standard : 0.114 - 0.260 mm (0.0045 - 0.0102 in)
• Tip clearance between inner rotor and outer rotor (position 2).
Standard : Below 0.180 mm (0.0071 in)
• Measure clearance with feeler gauge and straightedge.
• Side clearance between inner rotor and oil pump body (position 3).
Standard : 0.030 - 0.070 mm (0.0012 - 0.0028 in)
• Side clearance between outer rotor and oil pump body (position 4).
Standard : 0.050 - 0.110 mm (0.0020 - 0.0043 in)
• Calculate the clearance between inner rotor and oil pump body as follows.
1. Measure the outer diameter of protruded portion of inner rotor (position A).
2. Measure the inner diameter of oil pump body with inside micrometer (position B).
(clearance 5) = (inner diameter of oil pump body B) – (outer diameter of inner rotor A)
Standard : 0.045 - 0.091 mm (0.0018 - 0.0036 in)
Regulator Valve
1. Visually inspect components for wear and damage.
2. Check oil pressure regulator valve sliding surface and valve spring.
3. Coat regulator valve with engine oil. Check that it falls smoothly into the valve hole by its own weight.
If damaged, replace regulator valve set or oil pump body.
Regulator Valve Clearance
(Clearance 6) = D (Valve hole diameter) – E (Outer diameter of valve)
Standard : 0.040 - 0.097 mm (0.0016 - 0.0038 in)
If it exceeds the standard, replace the oil pump body.
CAUTION: Coat regulator valve with engine oil.
Check that it falls smoothly into the valve hole by its own weight.
Assembly
Assembly is in the reverse order of disassembly.
• Assemble the inner rotor and outer rotor with the punched marks on the oil pump cover side.
CAUTION: Before assembly apply new engine oil to the parts as specified.
Oil cooler
Removal and Installation 1. Oil filter 2. Oil cooler bolt 3. Water pipe 4. Water hose 5. Oil cooler 6. O-ring 7. Oil pan 8. Water pipe 9. Relief valve 10. Water drain plug 11. Copper gask ...Other materials:
Low-pressure pipe
Removal and Installation for Low-Pressure Pipe
QR25DE
Removal
1. Discharge the refrigerant. Refer to HA-24, "HFC-134a (R-134a) Service
Procedure".
2. Remove the strut tower bar. Refer to FSU-12, "Exploded View".
3. Remove the upper cowl. Refer to EXT-18, "Removal ...
NISSAN Voice Recognition System (if so equipped)
The NISSAN Voice Recognition system allows
hands-free operation of the systems equipped on
this vehicle, such as the phone and navigation
systems.
To operate NISSAN Voice Recognition, press
the button located on the steering
wheel.
When prompted, speak the command for the
system you wi ...
P0075 ivt control solenoid valve
Description
Intake valve timing control solenoid valve is activated by ON/OFF
pulse duty (ratio) signals from the ECM.
The intake valve timing control solenoid valve changes the oil
amount and direction of flow through intake valve timing control unit
or stops oil flow.
The longer pulse w ...