Nissan Xterra. Manual - part 352

EM-36

< REMOVAL AND INSTALLATION >

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OIL PAN AND OIL STRAINER

• Tighten oil pan (lower) bolts in numerical order as shown.

2. Install oil pan drain plug. Refer to 

EM-34, "Removal and Installation"

.

3. After 30 minutes fill with engine oil and inspect for leaks. Refer to 

LU-8, "Changing Engine Oil"

.

CAUTION:

Do not fill the engine with oil for at least 30 minutes after oil pan is installed.

4. Install engine under cover (If equipped).

INSPECTION AFTER INSTALLATION

1. Start engine, and check for engine oil leaks.
2. Stop engine and wait for 10 minutes.
3. Check engine oil level. Refer to 

LU-7, "Inspection"

.

REMOVAL (UPPER)

WARNING:

To avoid the danger of being scalded, do not drain engine oil when engine is hot.

CAUTION:

• Perform this procedure when engine is cold.

• Do not spill engine oil on drive belts.

• Do not spill engine coolant on drive belts.

NOTE:

When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-

ing.
1. Remove engine under cover. (If equipped). Refer to 

EXT-15, "Removal and Installation"

.

2. Drain engine coolant. Refer to 

CO-11, "Changing Engine Coolant"

.

3. Remove oil pan (lower). Refer to REMOVAL (LOWER).
4. Reposition the (RH) brake caliper aside and support with a suitable wire without disconnecting the front

brake hose (4WD models). Refer to 

BR-34, "Removal and Installation of Brake Caliper and Disc Rotor"

.

5. Remove oil level gauge and oil level gauge guide. 
6. Remove front final drive (4WD models). Refer to 

DLN-165, "Removal and Installation"

.

7. Remove front frame crossmember.
8. Disconnect steering gear lower joint shaft bolt and steering gear nuts and bolts, position out of the way.

Refer to 

ST-15, "Removal and Installation"

. 

9. Remove stabilizer bar brackets and position stabilizer bar out of the way. Refer to 

FSU-13, "Component"

.

10. Disconnect A/T fluid cooler tube brackets and position out of the way (A/T models). Refer to 

TM-250,

"Removal and Installation (2WD)"

 (2WD models), 

TM-252, "Removal and Installation (4WD)"

 (4WD mod-

els).

11. Remove oil filter, if necessary. Refer to 

LU-10, "Removal and Installation"

.

12. Disconnect oil cooler hoses. Remove oil cooler, if necessary. Refer to 

LU-11, "Removal and Installation"

.

13. Remove oil cooler, if necessary. Refer to 

LU-11, "Removal and Installation"

.

14. Disconnect oil pressure switch and remove.
15. Remove oil pan (lower). 
16. Remove oil strainer.

PBIC2890E

OIL PAN AND OIL STRAINER

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17. Remove transmission joint bolts which pierce oil pan (upper). Refer to 

TM-21, "Removal and Installation

from Vehicle"

 (4WD M/T models), 

TM-250, "Removal and Installation (2WD)"

 (2WD A/T models), 

TM-252,

"Removal and Installation (4WD)"

 (4WD A/T models).

18. Remove rear cover plate.
19. Remove oil pan (upper) bolts with power tool in reverse order as

shown.

• Insert Tool between oil pan (upper) and lower cylinder block.

Tap (1) Tool to insert it and then slide (2) it by tapping on the

side as shown.

CAUTION:

Be careful not to damage mating surfaces.

20. Remove O-rings from bottom of lower cylinder block and oil

pump.

CAUTION:

• Do not reuse the three O-rings.

• Install a new O-ring in the upper oil pan and two new O-

rings in the front cover.

INSPECTION AFTER REMOVAL

Clean oil strainer.

INSTALLATION (UPPER)

1. Install oil pan (upper) as follows:
a. Use scraper to remove old liquid gasket from mating surfaces.

• Also remove the old liquid gasket from mating surface of lower

cylinder block.

• Remove old liquid gasket from the bolt holes and threads.

CAUTION:

Do not scratch or damage the mating surfaces when clean-

ing off old liquid gasket.

PBIC2887E

Tool number

: KV10111100 (J-37228)

WBIA0566E

PBIC2885E

PBIC2884E

EM-38

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OIL PAN AND OIL STRAINER

b. Install new O-rings on the bottom of lower cylinder block and oil

pump.

CAUTION:

• Do not reuse the three O-rings.

• Install a new O-ring in the upper oil pan and two new O-

rings in the front cover.

c.

Apply a continuous bead of liquid gasket using Tool to the lower

cylinder block mating surfaces of oil pan (upper) as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-21, "Recommended Chemical Products and Sealants"

.

CAUTION:

• For bolt holes with   mark, apply liquid gasket outside

the hole.

• Apply a bead of 4.5 to 5.5 mm (0.177 to 0.217 in) in diame-

ter to area (A).

• Installation should be done within 5 minutes after coating.

d. Install oil pan (upper).

CAUTION:

• Do not reuse the three O-rings.

• Install a new O-ring in the upper oil pan and two new O-rings in the front cover.

• Install avoiding misalignment of both oil pan gaskets and O-rings.

• Tighten oil pan (upper) bolts in numerical order as shown.

• There are two types of bolts. 

e. Tighten transmission joint bolts. Refer to 

TM-21, "Removal and Installation from Vehicle"

 (4WD M/T mod-

els), 

TM-250, "Removal and Installation (2WD)"

 (2WD A/T models), 

TM-252, "Removal and Installation

(4WD)"

 (4WD A/T models).

2. Install oil strainer to oil pan (upper).
3. Installation of the remaining components is in the reverse order of removal.

CAUTION:

Do not fill the engine with oil for at least 30 minutes after oil pan is installed.

INSPECTION AFTER INSTALLATION

• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to 

MA-12, "Fluids and Lubricants"

.

• 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 leak-

age 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.

NOTE:

PBIC2885E

Tool number

: WS39930000 (

—

)

PBIC2886E

M8 

× 100 mm (3.97 in)

: 7, 11, 12, 13

M8 

× 25 mm (0.98 in)

: All except the above

PBIC2887E

OIL PAN AND OIL STRAINER

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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 spec-

ified level, if necessary.

• Summary of the inspection items:

*Power steering fluid, brake fluid, etc.

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission/
transaxle fluid 

A/T and CVT Models

Leakage

Level/Leakage

Leakage

M/T Models

Level/Leakage

Leakage

Level/Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gas

—

Leakage

—