Nissan Pathfinder (2011 year). Instruction — part 386

TIMING CHAIN

EM-199

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8. Install the front oil seal using suitable tool.

CAUTION:

Do not scratch or burr the oil seal sealing surface.

9. Install the chain tensioner cover, (if removed).

• Apply liquid gasket as shown.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-14, "Recommended Chemical Products and Sealants"

.

CAUTION:

• Remove water, oil, dust, dirt, or other foreign material on

all sealing surfaces prior to installation.

• The components must be installed within 5 minutes of the

liquid gasket application. Then allow 30 minutes for the

liquid gasket to set before operating the engine.

10. Installation of the remaining components is in the reverse order

of removal. Refer to

EM-188, "Removal and Installation"

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-18, "FOR USA AND CANADA : Fluids and Lubricants"

(United

States and Canada).

• 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:

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.

PBIC0059E

KBIA2547E

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

—

2011 Pathfinder

EM-200

< REMOVAL AND INSTALLATION >

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CAMSHAFT

CAMSHAFT

Exploded View

INFOID:0000000006247087

Removal and Installation

INFOID:0000000006247088

NOTE:

Do not remove the engine assembly to perform this procedure.

REMOVAL

1. Remove the engine under cover. Refer to

EXT-15, "Removal and Installation"

.

2. Remove the RH bank and LH bank rocker covers. Refer to

EM-179, "Removal and Installation"

.

3. Remove the spark plugs. Refer to

EM-156, "Removal and Installation"

.

4. Remove the drive belt. Refer to

EM-153, "Removal and Installation"

.

AWBIA0819GB

1.

Cylinder head RH bank

2.

Camshaft bracket (No. 2, 3, 4, 5)

3.

Valve lifter

4.

Camshaft bracket (No. 1)

5.

Seal washer

6.

Camshaft RH bank EXH

7.

Camshaft RH bank INT

8.

Camshaft LH bank INT

9.

Camshaft LH bank EXH

10. Camshaft sprocket RH bank EXH

11. Camshaft sprocket RH bank INT

(VTC)

12. Camshaft sprocket LH bank INT

(VTC)

13. Camshaft sprocket LH bank EXH

14. Camshaft position sensor (PHASE)

15. O-ring

16. Cylinder head LH bank

A.

Refer to

EM-200

2011 Pathfinder

CAMSHAFT

EM-201

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5. Obtain compression TDC of No. 1 cylinder as follows:
a. Turn the crankshaft pulley clockwise to align the TDC identifica-

tion notch (without paint mark) with the timing indicator on the

front cover.

b. At this time, make sure both intake and exhaust cam lobes of

No. 1 cylinder (top front on LH bank) point outside.

• If they do not point outside, turn crankshaft pulley once more.

6. Disconnect and remove the camshaft position sensor (PHASE). Refer to

EM-186, "Camshaft Position

Sensor (PHASE)"

.

7. Disconnect and remove the intake valve timing control position sensor (LH and RH). Refer to

EM-186,

"Intake Valve Timing Control Position Sensor (Bank 1) (LH)"

and

EM-186, "Intake Valve Timing Control

Position Sensor (Bank 1) (RH)"

.

8. Disconnect and remove the intake valve timing control solenoid valve (LH and RH). Refer to

EM-185,

"Intake Valve Timing Control Solenoid Valve (Bank1) (LH)"

and

EM-185, "Intake Valve Timing Control

Solenoid Valve (Bank 2) (RH)"

.

9. Remove the intake valve timing control solenoid valve cover

(RH) (A) and intake valve timing control solenoid valve cover

(LH) (B) as follows:

a. Loosen and remove the bolts in reverse order as shown.
b. Cut the liquid gasket and remove the covers using Tool.

CAUTION:

Do not damage mating surfaces.

10. Paint alignment marks on the RH bank (A) timing chain links (C)

and LH bank (B) timing chain links (D) and align with the cam-

shaft sprocket alignment marks (E) and (F).

11. Remove the chain tensioner (LH) using the following steps.

WARNING:

KBIA2476E

KBIA0400J

Tool number

: KV10111100 (J-37228)

AWBIA0815ZZ

AWBIA0154ZZ

2011 Pathfinder

EM-202

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CAMSHAFT

Plunger, spring, and spring seat pop out when squeezing return-proof clip without holding

plunger head. It may cause serious injuries. Always hold plunger head when removing.

a. Squeeze return-proof clip ends using suitable tool and push the

plunger into the chain tensioner body.

b. Secure plunger using stopper pin.

• Stopper pin is made from hard wire approximately 1 mm (0.04

in) in diameter.

c.

Remove the bolts and the timing chain tensioner.

NOTE:

• Stop plunger in the fully extended position using return-proof clip

(1) if stopper pin is removed.

• Push the plunger (2) into the chain tensioner body while squeezing

the return-proof clip (1). Secure it using stopper pin (3).

12. Remove the chain tensioner cover from the front cover using

Tool.

CAUTION:

Do not damage mating surfaces.

13. Remove the chain tensioner (RH) using the following steps.

WARNING:

Plunger, spring, and spring seat pop out when squeezing return-proof clip without holding

plunger head. It may cause serious injuries. Always hold plunger head when removing.

a. Squeeze return-proof clip ends using suitable tool and push the

plunger into the chain tensioner body.

b. Secure plunger using stopper pin.

• Stopper pin is made from hard wire approximately 1 mm (0.04

in) in diameter.

KBIA2479E

KBIA2483E

Tool number

: KV10111100 (J-37228)

KBIA2521E

KBIA2479E

2011 Pathfinder

CAMSHAFT

EM-203

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c. Remove the bolts and the chain tensioner (RH) (A).

NOTE:

If it is difficult to push plunger on chain tensioner (RH) (A),

remove the plunger under extended condition.

14. Loosen camshaft sprocket bolts as shown and remove camshaft

sprockets.

CAUTION:

To avoid interference between valves and pistons, do not

turn crankshaft or camshaft with timing chain discon-

nected.

15. Remove the RH (A) front cover bolts and LH (B) front cover

bolts.

16. Remove RH (A) camshaft bracket bolts and LH (C) camshaft

bracket bolts in the reverse of order shown to remove camshaft

brackets.

• Remove No. 1 camshaft bracket.

NOTE:

The bottom and front surface of bracket will be stuck because

of liquid gasket.

•

: Engine front

• B: Exhaust side

• D: Intake side

WBIA0705E

KBIA2485E

WBIA0706E

WBIA0707E

2011 Pathfinder

EM-204

< REMOVAL AND INSTALLATION >

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CAMSHAFT

17. Remove the camshaft.
18. Remove the valve lifters if necessary.

• Correctly identify location where each part is removed from. Keep parts organized to avoid mixing them

up.

INSPECTION AFTER REMOVAL

Camshaft Runout

1. Put V block on precise flat work bench, and support No. 1 and

No. 5 journals of the camshaft.

2. Set dial indicator vertically to No. 3 journal.
3. Turn the camshaft to one direction, and measure the camshaft

runout on dial indicator (total indicator reading).

• If measurement exceeds specification, replace the camshaft.

Camshaft Cam Height

• Measure the camshaft cam height.

• If measurement is not within the specifications, replace the cam-

shaft.

Camshaft Journal Clearance

Camshaft Journal Diameter

• Measure the diameter of the camshaft journal.

Camshaft Bracket Inner Diameter

• Tighten the camshaft bracket bolt to the specified torque.

• Measure the inner diameter (A) of the camshaft bracket.

Calculation of Camshaft Journal Clearance

(Journal clearance) = (camshaft bracket inner diameter) – (camshaft

journal diameter)

• If measurement is not within specification, replace either or both

camshaft and cylinder head.

Camshaft runout

: Less than 0.02 mm (0.0008 in)

EMK0641D

Standard cam height
(intake)

: 44.865 - 45.055 mm
(1.7663 - 1.7738 in)

Standard cam height (ex-
haust)

: 45.075 - 45.265 mm
(1.7746 - 1.7821 in)

Cam wear limit
(intake & exhaust)

: 0.02 mm (0.0008 in)

PBIC0039E

Standard diameter : 25.950 - 25.970 mm

(1.0217 - 1.0224 in)

PBIC0040E

Standard

: 26.000 - 26.021 mm (1.0236 - 1.0244 in)

Standard

: 0.030 - 0.071 mm (0.0012 - 0.0028 in)

PBIC1645E

2011 Pathfinder

CAMSHAFT

EM-205

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NOTE:

The inner diameter of the camshaft bracket is manufactured together with the cylinder head. Replace the

whole cylinder head as an assembly.

Camshaft End Play

• Install dial gauge in the thrust direction on the front end of the cam-

shaft. Measure the end play when the camshaft is moved forward/

backward (in direction to axis).

• If measurement is out of the specified range, replace the camshaft

and measure again.

• If measurement is still out of the specified range, replace the cylin-

der head.

• Measure the following parts if end play is outside the specified

value.

- Dimension

″

A

″

for camshaft No. 1 journal

- Dimension

″

B

″

for cylinder head No. 1 journal

• If measurements are not within specification, replace the camshaft

and/or cylinder head.

Camshaft Sprocket Runout

1. Install the camshaft in the cylinder head.
2. Install the camshaft sprocket to the camshaft.
3. Measure the camshaft sprocket runout.

• If measurement exceeds the specification, replace the cam-

shaft sprocket.

Valve Lifter

Check if the surface of the valve lifter has any wear or cracks.

• If any damage is found, replace the valve lifter.

• Select the thickness of the head so that the valve clearance is

within the standard when replacing. Refer to

EM-209, "Inspection

after Installation"

.

Valve Lifter Clearance

Valve Lifter Diameter

Standard

: 0.115 - 0.188 mm (0.0045 - 0.0074 in)

PBIC0042E

Standard

: 30.500 - 30.548 mm (1.2008-1.2027 in)

Standard

: 30.360 - 30.385 mm (1.1953-1.1963 in)

KBIA2426J

Runout

: Less than 0.15 mm (0.0059 in)

KBIA0181J

KBIA0182E

2011 Pathfinder

EM-206

< REMOVAL AND INSTALLATION >

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CAMSHAFT

• Measure the diameter of the valve lifter.

Valve Lifter Hole Diameter

• Measure the diameter of the valve lifter hole of the cylinder head,

using suitable tool.

Calculation of Valve Lifter Clearance

(Valve lifter clearance) = (valve lifter hole diameter) – (valve lifter

diameter)

• If the measurement is not within specification, referring to each

specification of the valve lifter diameter and hole diameter, replace

either or both the valve lifter and cylinder head.

INSTALLATION

1. Install the valve lifters if removed.

• Install removed parts in their original locations.

2. Install the camshafts. Use the table below for identification of the

RH and LH, and intake and exhaust.

• Install so that the RH bank (B) dowel pins (A) and LH bank (C)

dowel pins (A) at the front of the camshaft face are in the

direction shown.

Standard

: 33.977 - 33.987 mm (1.3377 - 1.3381 in)

JEM798G

Standard

: 34.000 - 34.016 mm (1.3386 - 1.3392 in)

Standard

: 0.013 - 0.039 mm (0.0005 - 0.0015 in)

PBIC0043E

Bank

INT EXH

Identification

paint (front)

Identification

paint (rear)

Identification

rib

RH

INT

Pink

—

Yes

EXH

—

Orange

Yes

LH

INT

Pink

—

No

EXH

—

Orange

No

KBIA2523E

WBIA0708E

2011 Pathfinder