Upper Oil Pan
OIL PAN AND OIL STRAINER
Removal and Installation (Upper Oil Pan)
REMOVAL
WARNING:
- Do not remove the oil pan until the exhaust system and cooling system have completely cooled off.
- When removing the front and rear engine through bolts and nuts, lift the engine up slightly for safety.
CAUTION:
When removing the upper oil pan from the engine, first remove the crankshaft position sensor (POS).
Be careful not to damage sensor edges or signal plate teeth.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.
1.Remove the engine from the vehicle. Refer to "2WD : Removal and Installation" Removal and Installation (2WD models)
or "AWD : Removal and Installation" Removal and Installation (AWD models).
Revision: March 20122013 Infiniti JX
2.Remove the oil dipstick.
3.Remove the drive belt. Refer to "Removal and Installation" Removal and Installation.
4.Disconnect the A/C compressor harness connector.
5.Remove the A/C compressor bolts and remove the A/C compressor. Refer to "COMPRESSOR : Removal and Installation" Removal and Installation.
6.Remove coolant pipe bolts.
7.Disconnect the coolant hoses from the engine oil cooler.
8.Remove the oil filter and engine oil cooler from the upper oil pan. Refer to "Removal and Installation" Service and Repair.
9.Remove the oil pressure switch, and the crankshaft position sensor (POS) from the upper oil pan.
10.Remove the lower oil pan. Refer to "Removal and Installation (Lower Oil Pan)" Lower Oil Pan.
11.Remove the oil strainer.
12.Remove the upper oil pan.
a.Loosen the bolts in the reverse order shown using a power tool.
b.Insert an appropriate size tool into the notch (1) of the upper oil pan as shown.
c.Pry off the upper oil pan by moving the tool up and down (2) as shown.
13.Remove the O-ring seals from the bottom of the cylinder block and oil pump housing. Use new O-rings for installation.
CAUTION:
Do not reuse O-rings.
Revision: March 20122013 Infiniti JX
14.Remove front cover gasket and rear oil seal retainer gasket.
15.If re-installing the original oil pan, remove the old sealant from the mating surfaces using a scraper.
- Also remove the old sealant from mating surface of the cylinder block.
- Remove the old sealant from the bolt holes and threads.
CAUTION:
Do not scratch or damage the mating surfaces when cleaning off the old sealant.
INSPECTION AFTER REMOVAL
Clean debris from oil strainer.
INSTALLATION
1.Install oil strainer and tighten bolt to specified torque. Refer to "Exploded View" Exploded View.
2.Apply Genuine Silicone RTV Sealant or equivalent to the front cover gasket and the rear oil seal retainer gasket as shown.
Refer to "Recommended Chemical Products and Sealants" Recommended Chemical Products and Sealants.
CAUTION:
- Installation should be done within 5 minutes after applying liquid gasket.
- Do not fill the engine with oil for at least 30 minutes after the components are installed to allow the sealant to cure.
3.Install the front cover gasket and rear oil seal retainer gasket as shown.
CAUTION:
Do not reuse front cover gasket or rear oil seal retainer gasket.
Revision: March 20122013 Infiniti JX
4.Apply a bead of sealant to the cylinder block mating surface of the upper oil pan as shown.
CAUTION:
- Installation should be done within 5 minutes after applying liquid gasket.
- Do not fill the engine with oil for at least 30 minutes after the components are installed to allow the sealant to cure.
NOTE:
- Apply liquid gasket to the outside of bolt holes 5, 6, 10, 11 and
12.
- Apply liquid gasket to the inside of the other bolt holes.
a.Be sure the sealant is applied 4.0 - 5.0 mm (0.157 - 0.197 in) as shown. Increase the bead to 4.5 - 5.5 mm (0.177 - 0.217 in) at the four places indicated.
b.Use Genuine Silicone RTV Sealant, or equivalent. Refer to GI22, "Recommended Chemical Products and Sealants".
5.Install new O-rings on the cylinder block and oil pump body.
CAUTION:
Do not reuse O-rings.
6.Install the upper oil pan.
- Tighten bolts (1) and (2) to specification within five minutes of applying the liquid gasket.
- Tighten the remaining upper oil pan bolts to specification in the order shown.
CAUTION:
- Installation should be done within 5 minutes after applying liquid gasket.
- Do not fill the engine with oil for at least 30 minutes after the components are installed to allow the sealant to cure.
7.Install the lower oil pan. Refer to "Removal and Installation (Lower Oil Pan)" Lower Oil Pan.
8.Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
- Before starting engine, check oil/fluid levels including engine coolant and engine oil. If there is less than required quantity, fill to the specified level.
- 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 leakage 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.
Revision: March 20122013 Infiniti JX
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.
- 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 specified level, if necessary.
- Summary of the inspection items:
Revision: March 20122013 Infiniti JX