Nissan Pathfinder (2010 year). Manual - part 372

 

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Nissan Pathfinder (2010 year). Manual - part 372

 

 

EM-104

< DISASSEMBLY AND ASSEMBLY >

[VQ40DE]

ENGINE UNIT

5. Remove cylinder head. Refer to 

EM-86, "Removal and Installation"

.

6. Remove sub harness, and remove knock sensors.

CAUTION:

Carefully handle sensor avoiding shocks.

7. Remove pilot converter using Tool as necessary.

8. Remove piston and connecting rod assembly as follows:

• Before removing piston and connecting rod assembly, check the connecting rod side clearance. Refer to

EM-112, "Inspection After Disassembly"

.

CAUTION:

Be careful not to drop connecting rod bearing, and to scratch the surface.

9. Position crankshaft pin corresponding to connecting rod to be removed onto the bottom dead center.
10. Remove connecting rod bearing cap.
11. Push piston and connecting rod assembly out to the cylinder

head side using suitable tool.

CAUTION:

Be careful not to damage the cylinder wall and crankshaft

pin, resulting from an interference of the connecting rod big

end.

12. Remove connecting rod bearings from connecting rod and connecting rod bearing cap.

CAUTION:

Identify installation position, and store them without mixing them up.

13. Remove piston rings from piston.

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

EM-112, "Inspection After

Disassembly"

.

• Remove piston rings using piston ring expander or suitable

tool.

CAUTION:

• When removing piston rings, be careful not to damage

piston.

• Be careful not to damage piston rings by expanding them

excessively.

14. Remove piston from connecting rod as follows: 

Tool number

: ST16610001 (J-23907)

WBIA0583E

PBIC2940E

PBIC0087E

2010 Pathfinder

ENGINE UNIT

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a. Remove snap ring using snap ring pliers.

b. Heat piston to 60

°

 to 70

°

C (140

°

 to 158

°

F) with industrial use

drier or equivalent.

c. Push out piston pin with stick of outer diameter approximately 20

mm (0.79 in).

15. Remove lower cylinder block bolts.

• Before loosening lower cylinder block bolts, measure the crankshaft end play. Refer to 

EM-112, "Inspec-

tion After Disassembly"

.

• Loosen lower cylinder block bolts in reverse order as shown in

several different steps.

NOTE:

Use TORX socket (size E14) for bolts No. 1 to 16 (M10 bolt).

16. Remove lower cylinder block.

• Cut liquid gasket for removal. Refer to 

EM-6, "Precaution for Liquid Gasket"

.

CAUTION:

Be careful not to damage the mounting surfaces.

17. Remove crankshaft.
18. Pull rear oil seal out from rear end of crankshaft.

PBIC1638E

PBIC1639E

PBIC0262E

PBIC2941E

Tool number

: KV10111100 (J-37228)

2010 Pathfinder

EM-106

< DISASSEMBLY AND ASSEMBLY >

[VQ40DE]

ENGINE UNIT

NOTE:

When replacing rear oil seal without removing lower cylinder block, use a suitable tool to pull the rear oil

seal installed between crankshaft and cylinder block out.

CAUTION:

Be careful not to damage crankshaft and cylinder block.

19. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.

CAUTION:

• Do not drop main bearing, or scratch the surface.

• Identify installation positions, and store them without mixing them up.

20. Remove oil jet.

ASSEMBLY

1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to

remove any foreign material.

WARNING:

Use goggles to protect your eyes.

2. Install each plug to cylinder block as shown.

• Apply sealant to the thread of water drain plugs (A) and (B).

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-14, "Recommended Chemical Products and Sealants"

.

• Apply sealant to the thread of plug (C).

Use Genuine High Strength Thread Locking Sealant or

equivalent. Refer to 

GI-14, "Recommended Chemical

Products and Sealants"

.

• Apply sealant to the threads of plug (D).

Use Anaerobic Liquid Gasket or equivalent. Refer to 

GI-

14, "Recommended Chemical Products and Sealants"

.

NOTE:

For Canada, (D) is not plug but block heater. Refer to 

EM-102,

"Disassembly and Assembly"

.

• Replace washers with new one.

• Tighten each plug as specified below.

Block Plug and Block Heater Installation

3. Install oil jet.

WLIA0020E

Part

Washer

Tightening Torque

A

No

19.6 N·m (2.0 kg-m, 14 ft-lb)

B

Reuse

No

9.8 N·m (1.0 kg-m, 87 in-lb)

New

6.0 N·m (0.61 kg-m, 53 in-lb)

C

Yes

116 N·m (11.8 kg-m, 85 ft-lb)

D

Plug

Yes

62 N·m (6.3 kg-m, 46 ft-lb)

Block heater

73.5 N·m (7.5 kg-m, 54 ft-lb)

2010 Pathfinder

ENGINE UNIT

EM-107

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• Insert oil jet dowel pin into cylinder block dowel pin hole, and

tighten bolts.

4. Install main bearings and thrust bearings as follows:
a. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
b. Install thrust bearings to the both sides of the No. 3 journal hous-

ing on cylinder block.

• Install thrust bearings with the oil groove facing crankshaft arm

(outside).

• Install thrust bearing with a projection on one end on cylinder

block, Align projection with mating notch.

c. Install main bearings paying attention to the direction.

• Main bearing with oil hole and groove goes on cylinder block.

The one without them goes on lower cylinder block.

• Before installing main bearings, apply engine oil to the bearing

surface (inside). Do not apply engine oil to the back surface,

but thoroughly clean it.

• When installing, align main bearing stopper protrusion to cut-

out of cylinder block and lower cylinder block.

• Ensure the oil holes on cylinder block and those on the corre-

sponding bearing are aligned.

5. Install crankshaft to cylinder block.

• While turning crankshaft by hand, check that it turns smoothly. 

6. Inspect the outer diameter of lower cylinder block bolt. Refer to 

EM-112, "Inspection After Disassembly"

.

7. Install lower cylinder block as follows:

NOTE:

Lower cylinder block cannot be replaced as a single part, because it is machined together with cylinder

block.

a. Apply a continuous bead of liquid gasket using Tool to lower cyl-

inder block as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-14, "Recommended Chemical Products and Sealants"

.

CAUTION:

After liquid gasket is applied, rear oil seal installation must

be finished within 5 minutes. Therefore, the following pro-

cedure must be performed quickly.

b. Tighten lower cylinder block as follows:
i.

Apply new engine oil to threads and seat surfaces of the bolts.

PBIC0898E

PBIC2968E

PBIC2969E

Tool number

: WS39930000 (

)

PBIC2942E

2010 Pathfinder

EM-108

< DISASSEMBLY AND ASSEMBLY >

[VQ40DE]

ENGINE UNIT

ii.

Tighten M8 bolts in numerical order as shown from No. 17 to 24.

CAUTION:

Wipe off completely any protruding liquid gasket on rear oil

seal installation surface.

NOTE:

There are more processes to complete the tightening bolts.

However stop procedure here to install rear oil seal.

c.

Install rear oil seal. Refer to 

EM-84, "Removal and Installation of Rear Oil Seal"

.

d. Restart tightening of lower cylinder block bolts as follows:
i.

Tighten M10 bolts in numerical order as shown from No. 1 to 16.

NOTE:

Use TORX socket (size E14) for bolts No. 1 to 16 (M10 bolt).

ii.

Turn M10 bolts 90

°

 clockwise in numerical order from No. 1 to

16 using Tool.

CAUTION:

Use angle wrench Tool to check tightening angle. Do not

make judgement by visual inspection.

• After installing the bolts, make sure that crankshaft can be rotated smoothly by hand.

• Wipe off completely any protruding liquid gasket on front side of the engine.

• Check the crankshaft end play. Refer to 

EM-112, "Inspection After Disassembly"

.

8. Inspect the outer diameter of connecting rod bolt. Refer to 

EM-112, "Inspection After Disassembly"

.

9. Install piston to connecting rod as follows: 
a. Install new snap ring to the groove of piston rear side using suitable tool.

• Insert it fully into groove to install.

b. Install piston to connecting rod.

• Using industrial use drier or similar tool, heat piston until piston pin can be pushed in by hand without

excess force [approx. 60

°

 to 70 

°

C (140

°

 to 158 

°

F)]. From the front to the rear, insert piston pin into pis-

ton and connecting rod.

Bolts 17 - 24

: 22.1 N·m (2.3 kg-m, 16 ft-lb)

PBIC2941E

Bolts 1 - 16

: 35.3 N·m (3.6 kg-m, 26 ft-lb)

PBIC2941E

Tool number

: KV10112100 (BT-8653-A)

WBIA0584E

2010 Pathfinder

ENGINE UNIT

EM-109

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• Assemble so that the front mark on the piston head and the

cylinder number on connecting rod are positioned as shown.

c. Install new snap ring to the groove of the piston front side. 

• Insert it fully into groove to install.

• After installing, make sure that connecting rod moves

smoothly.

10. Install piston rings using piston ring expander or suitable tool.

CAUTION:

• When installing piston rings, be careful not to damage

piston.

• Be careful not to damage piston rings by expending them

excessively.

• If there is stamped mark on ring, mount it with marked side up.

NOTE:

If there is no stamp on ring, no specific orientation is required

for installation.

• Position each ring with the gap as shown referring to the pis-

ton front mark.

• Check the piston ring side clearance. Refer to 

EM-112, "Inspection After Disassembly"

.

11. Install connecting rod bearings to connecting rod and connecting rod bearing cap.

• Before installing connecting rod bearings, apply engine oil to the bearing surface (inside). Do not apply

engine oil to the back surface, but thoroughly clean it. 

SEM838F

PBIC0087E

Stamped mark:

Top ring

: —

Second ring

: R

SEM757G

PBIC0808E

2010 Pathfinder

EM-110

< DISASSEMBLY AND ASSEMBLY >

[VQ40DE]

ENGINE UNIT

• When installing, align connecting rod bearing stopper protru-

sion with cutout of connecting rods and connecting rod bearing

caps to install. 

• Ensure the oil hole on connecting rod and that on the corre-

sponding bearing are aligned. 

12. Install piston and connecting rod assembly to crankshaft. 
13. Position crankshaft pin corresponding to connecting rod to be installed onto the bottom dead center.
14. Apply engine oil sufficiently to the cylinder bore, piston and crankshaft pin journal.
15. Match the cylinder position with the cylinder number on connecting rod to install. 

NOTE:

Be sure that front mark on piston head is facing front of engine.

16. Install piston with the front mark on the piston head facing the

front of engine using Tool.

CAUTION:

Be careful not to damage the cylinder wall and crankshaft

pin, resulting from an interference of the connecting rod big

end.

17. Install connecting rod bearing cap.

• Match the stamped cylinder number marks on connecting rod

with those on connecting rod bearing cap to install.

• Be sure that front mark on connecting rod bearing cap is fac-

ing front of engine.

18. Tighten connecting rod bolts as follows:
a. Apply engine oil to the threads and seats of connecting rod bolts. 
b. Tighten connecting rod bolts.

PBIC2067E

Tool number

: EM03470000 (J-8037)

WBIA0585E

PBIC0809E

Connecting rod bolt  : 19.6 N·m (2.0 kg-m, 14 ft-lb)

2010 Pathfinder

ENGINE UNIT

EM-111

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c. Then tighten all connecting rod bolts 90

°

 clockwise.

CAUTION:

Always use Tool. Avoid tightening based on visual check

alone.

• After tightening connecting rod bolts, make sure that crank-

shaft rotates smoothly.

• Check the connecting rod side clearance. Refer to 

EM-112,

"Inspection After Disassembly"

.

19. Install pilot converter.

• With drift of the following outer diameter, press-fit as far as it

will go.

• Press-fit pilot converter with its chamfer facing crankshaft as

shown. 

20. Install knock sensors.

• Install knock sensor so that connector faces rear of engine.

• After installing knock sensor, connect harness connector, and

lay it out to rear of engine.

CAUTION:

• Do not tighten bolts while holding connector.   

• If any impact by dropping is applied to knock sensor,

replace it with new one.

NOTE:

• Make sure that there is no foreign material on the cylinder

block mating surface and the back surface of knock sensor. 

• Make sure that knock sensor does not interfere with other

parts.

Tool number

: KV10112100 (BT-8653-A)

WBIA0586E

Pilot converter

: Approx. 33 mm (1.30 in)

PBIC2947E

SEM537E

PBIC2948E

2010 Pathfinder

 

 

 

 

 

 

 

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