Engine - Oil Leakage From The Upper End Of Oil Cooler

Classification:
EM10-002b

Reference:
NTB11-015b

Date:
February 1, 2013

ALTIMA SEDAN AND COUPE, SENTRA, AND ROGUE WITH QR25DE ENGINE; OIL LEAK

This bulletin has been amended in APPLIED VEHICLES, SERVICE PROCEDURE, PARTS INFORMATION, and CLAIMS INFORMATION. Discard all previous versions of this bulletin.

APPLIED VEHICLES:

2007 - 2012 Altima Sedan (L32)

2008 - 2013 Altima Coupe (CL32)

2007-2012 Sentra (B16)

2008 - 2013 Rogue (535)

APPLIED ENGINE:

QR25DE (4 cyl)

IF YOU CONFIRM:





Oil is leaking from the upper end of the engine oil cooler (oil cooler). See Figure 1.

ACTION:

Reseal the oil cooler with the parts listed in the PARTS INFORMATION.

^ For repairs refer to SERVICE PROCEDURE.

NOTE:
Do not replace the complete engine oil cooler assembly for this incident if it should occur.

IMPORTANT:
The purpose of ACTION is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair.





PARTS INFORMATION





CLAIMS INFORMATION

SERVICE PROCEDURE

1. Remove the oil cooler from the engine block.

^ Refer to the appropriate section of the Electronic Service Manual (ESM) if needed.

^ Perform repairs in a clean work environment.





2. Remove the four (4) bolts, and then remove the upper half of the oil cooler. See Figure 2.

3. Remove the O-ring gasket, and then thoroughly clean out the gasket area and around it with a suitable cleaner.





^ The dashed line in Figure 3 shows the O-ring gasket area to be cleaned.

^ Make sure no debris or contaminants get into the holes.

^ Also clean underneath the upper half of the oil cooler (no picture shown).





4. Lightly coat the new O-ring gasket (see PARTS INFORMATION) with engine oil, and then put it in place. See Figure 4.

5. Install the upper half of the oil cooler with the bolts.

6. Torque the bolts in two steps: first step at half value, and then the second step at full value (listed below).

^ Bolts torque sequence:
1-2-3-4-5-6-7-8 (see Figure 5).





^ Bolts torque:
4.0 N.m (0.41 kg-m, 35.4 in lb)

7. Install the oil cooler to the engine with a new gasket (see PARTS INFORMATION).

Refer to the appropriate section of the ESM if needed.





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