Nissan X-Trail 32. Manual - part 1052

OIL PAN (UPPER)

EM-105

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

• Press-fit to the specified dimensions as shown in the figure.

CAUTION:

• Never touch the grease applied to the oil seal lip.
• Be careful not to damage the rear oil seal mounting part of

oil pan (upper) and cylinder block or the crankshaft.

• Press-fit straight, checking that rear oil seal does not curl

or tilt.

NOTE:
The standard surface of the dimension is the rear end surface of cylinder block.

3.

Install in the reverse order of removal, for the rest of parts. 

Inspection

INFOID:0000000010783731

INSPECTION AFTER REMOVAL

Clean oil strainer portion (part of the oil pump) if any object attached.

: Rear oil seal

: Cylinder block rear end surface

: 0 - 0.5 mm (0 - 0.020 in)

JPBIA3011ZZ

EM-106

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

CYLINDER BLOCK

CYLINDER BLOCK

Exploded View

INFOID:0000000010783732

Cylinder block

O-ring

Crankshaft position sensor (POS)

Crankshaft position sensor (POS) cover

Oil filter (for intake valve timing control)

Knock sensor 

JPBIA6819GB

CYLINDER BLOCK

EM-107

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

Disassembly and Assembly

INFOID:0000000010783733

DISASSEMBLY

1.

Remove oil pan (upper). Refer to 

EM-102, "Exploded View"

.

2.

Remove thermostat housing. Refer to 

CO-26, "Exploded View"

.

3.

Remove knock sensor.

CAUTION:

Handle it carefully and avoid impacts.

4.

Remove crankshaft position sensor (POS) cover and crankshaft position sensor (POS).

CAUTION:

• Handle crankshaft position sensor (POS) carefully and avoid impacts.
• Never disassemble.
• Never place crankshaft position sensor (POS) in a location where it is exposed to magnetism.

5.

Remove oil filter (for intake valve timing control).

6.

Remove piston and connecting rod assembly with the following procedure:
• Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to

EM-115, "Inspection"

.

a.

Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center. 

b.

Remove connecting rod cap. 

c.

Using a hammer handle or similar tool, push piston and connect-
ing rod assembly out to the cylinder head side. 

CAUTION:

• Be careful not to damage matching surface with connect-

ing rod cap.

• Be careful not to damage the cylinder wall and crankshaft

pin, resulting from an interference of the connecting rod
big end.

7.

Remove connecting rod bearings. 

CAUTION:

When removing them, note the installation position. Keep them in the correct.

Oil pressure switch

Oil tempareture sensor

Oil jet

Top ring

Second ring

Oil ring

Snap ring

Piston

Piston pin

Connecting rod

Thrust bearing

Connecting rod bearing (upper)

Main bearing (upper)

Crankshaft key

Main bearing (lower)

Connecting rod bearing (lower)

Connecting rod cap

Connecting rod cap bolt

Main bearing cap

Main bearing cap bolt

Crankshaft

Signal plate

Rear oil seal

Comply with the installation procedure 
when tightening. Refer to 

EM-107

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Sealing point

: Should be lubricated with oil.

: Select with proper thickness.

PBIC0259E

EM-108

< UNIT DISASSEMBLY AND ASSEMBLY >

[MR20DD]

CYLINDER BLOCK

8.

Remove piston rings form piston. 
• Before removing piston rings, check the piston ring side clearance. Refer to 

EM-115, "Inspection"

.

• Use a piston ring expander (commercial service tool) (A).

CAUTION:

• When removing piston rings, be careful not to damage

the piston.

• Be careful not to damage piston rings by expanding

them excessively.

9.

Remove piston from connecting rod with the following procedure: 

a.

Using snap ring pliers (A), remove snap rings.

b.

Heat piston to 60 to 70

°

C (140 to 158

°

F) with an industrial use

drier (A) or equivalent.

c.

Push out piston pin with stick (A) of outer diameter approxi-
mately 18 mm (0.71 in).

10. Remove main bearing cap bolts.

• Measure crankshaft end play before loosening main bearing cap bolts. Refer to 

EM-115, "Inspection"

.

JSBIA2493ZZ

JSBIA2494ZZ

JSBIA2495ZZ

JSBIA2496ZZ