Nissan Pathfinder (2007 year). Manual - part 133

 

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Nissan Pathfinder (2007 year). Manual - part 133

 

 

RADIATOR

CO-15

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2007 Pathfinder

7.

Disconnect A/T fluid cooler hoses.

Install blind plug to avoid leakage of A/T fluid.

8.

Remove the upper mount bracket bolts.

9.

Remove the two A/C condenser bolts.

10. Remove radiator as follows:

CAUTION:

Do not damage or scratch A/C condenser and radiator core when removing.

a.

With lifting and pulling radiator in a rear direction, disassemble
lower mount from radiator core support center.

CAUTION:

Because A/C condenser is onto the front-lower portion of
radiator, moving to rear direction should be at minimum.

b.

Lift A/C condenser up and remove radiator after disengaging the
fitting as front-bottom surface.

CAUTION:

Lifting A/C condenser should be minimum to prevent a load
to A/C piping.

c.

After removing radiator, put A/C condenser on radiator core sup-
port center to prevent a load to A/C piping, and temporarily fix it
with rope or similar means.

LBIA0419E

LBIA0421E

PBIC1936E

PBIC1054E

CO-16

RADIATOR

2007 Pathfinder

INSTALLATION

Installation is in the reverse order of removal.

INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using tool. Refer to 

CO-9, "CHECKING COOLING SYSTEM FOR

LEAKS"

 .

Start and warm up engine. Visually check there are no leaks of engine coolant and A/T fluid.

ENGINE COOLING FAN

CO-17

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ENGINE COOLING FAN

PFP:21140

Removal and Installation (Crankshaft driven type)

EBS00QCZ

REMOVAL

1.

Remove air duct. Refer to 

EM-16, "Removal and Installation"

 .

2.

Remove the engine front undercover.

3.

Remove the upper and lower radiator shrouds. Refer to 

CO-14, "Removal and Installation"

 .

4.

Remove drive belts. Refer to 

EM-14, "Removal and Installation"

 .

5.

Remove cooling fan.

INSPECTION AFTER REMOVAL
Fan Coupling

Inspect fan coupling for oil leakage and bimetal conditions. 

Fan Bracket

Visually check that there is no significant looseness in the fan
bracket shaft, and that it turns smoothly by hand.

If there are any unusual concerns, replace the fan bracket
assembly.

INSTALLATION

Installation is in the reverse order of removal.

Install cooling fan with its front mark “F” facing front of engine. Refer to 

CO-17, "Removal and Installation

(Crankshaft driven type)"

 .

1.

Cooling fan

2.

Fan coupling

3.

Fan bracket

4.

Cooling fan pulley

WBIA0726E

SLC072

LBIA0422E

CO-18

ENGINE COOLING FAN

2007 Pathfinder

INSPECTION AFTER INSTALLATION

Check for leaks of the engine coolant using tool. Refer to 

CO-9, "CHECKING COOLING SYSTEM FOR

LEAKS"

 .

Start and warm up the engine. Visually make sure that there are no leaks of the engine coolant.

Removal and Installation (Motor driven type)

EBS00QD0

REMOVAL

1.

Remove radiator upper and lower shroud. Refer to 

CO-14,

"Removal and Installation"

 .

2.

Disconnect harness connector from fan motor.

3.

Remove the bolt and remove the fan grille and motor assembly. 

INSTALLATION

Installation is in the reverse order of removal.

Cooling fan is controlled by ECM. For details, refer to 

EC-488, "Cooling Fan Operation"

 .

LBIA0423E

WATER PUMP

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WATER PUMP

PFP:21020

Removal and Installation

EBS00QD1

CAUTION:

When removing water pump assembly, be careful not to get engine coolant on drive belts.

Water pump cannot be disassembled and should be replaced as a unit.

After installing water pump, connect hose and clamp securely, then check for leaks using tool.

REMOVAL

1.

Remove undercover with power tool.

2.

Remove drive belts. Refer to 

EM-14, "Removal and Installation"

 .

3.

Drain engine coolant. Refer to 

CO-9, "ENGINE COOLANT"

 .

CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.

4.

Remove radiator hoses (upper and lower) and cooling fan assembly. Refer to 

CO-17, "ENGINE COOL-

ING FAN"

 .

5.

Remove chain tensioner cover and water pump cover from front
timing chain case, using Tool.

1.

Water pump

2.

Timing chain tensioner (primary)

3.

Chain tensioner cover

4.

Water drain plug (front)

5.

Water pump cover

6.

O-ring

7.

O-ring

PBIC2833E

Tool number

: KV10111100 (J-37228)

PBIC2662E

CO-20

WATER PUMP

2007 Pathfinder

6.

Remove timing chain tensioner (primary) as follows:

a.

Loosen clip of timing chain tensioner (primary), and release
plunger stopper. (1)

b.

Insert plunger into tensioner body by pressing slack guide. (2)

c.

Keep slack guide pressed and hold plunger in by pushing stop-
per pin through the tensioner body hole and plunger groove. (3)

d.

Turn crankshaft pulley clockwise so that timing chain on the tim-
ing chain tensioner (primary) side is loose.

e.

Remove bolts and remove timing chain tensioner (primary).

CAUTION:

Be careful not to drop bolts inside timing chain case.

7.

Remove water pump as follows:

a.

Remove three water pump bolts. Secure a gap between water
pump gear and timing chain, by turning crankshaft pulley coun-
terclockwise until timing chain looseness on water pump
sprocket becomes maximum. 

PBIC2835E

PBIC2834E

PBIC2836E

PBIC2863E

WATER PUMP

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b.

Screw M8 bolts [pitch: 1.25 mm (0.049 in) length: approx. 50
mm (1.97 in)] into water pumps upper and lower bolt holes until
they reach timing chain case. Then, alternately tighten each bolt
for a half turn, and pull out water pump.

CAUTION:

Pull straight out while preventing vane from contacting
socket in installation area.

Remove water pump without causing sprocket to contact
timing chain.

c.

Remove M8 bolts and O-rings from water pump.

CAUTION:

Do not disassemble water pump.

NOTE:
Do not reuse O-rings.

INSPECTION AFTER REMOVAL

Check for badly rusted or corroded water pump body assembly.

Check for rough operation due to excessive end play.

Replace water pump, if necessary.

INSTALLATION

1.

Install new O-rings to water pump.

NOTE:

Apply engine oil to O-rings.

Locate O-ring with white paint mark to engine front side.

2.

 Install water pump.

CAUTION:

Do not allow timing chain case to nip O-rings when install
water pump.

Make sure that timing chain and water pump sprocket are
engaged.

Insert water pump by tightening bolts alternately and evenly.

3.

Install timing chain tensioner (primary) as follows:

JLC357B

SLC943A

PBIC2837E

PBIC1058E

CO-22

WATER PUMP

2007 Pathfinder

a.

Remove dust and foreign material completely from backside of timing chain tensioner (primary) and from
installation area of rear timing chain case.

b.

Turn crankshaft pulley clockwise so that timing chain on the timing chain tensioner (primary) side is loose.

c.

Install timing chain tensioner (primary) with its stopper pin attached.

CAUTION:

Be careful not to drop bolts inside timing chain case.

d.

Remove stopper pin.

e.

Make sure again that timing chain and water pump sprocket are engaged.

4.

Install chain tensioner cover and water pump cover as follows:

a.

Before installing, remove all traces of old liquid gasket from mat-
ing surface of water pump cover and chain tensioner cover
using scraper. Also remove traces of old liquid gasket from the
mating surface of front timing chain case.

b.

Apply a continuous bead of liquid gasket, to mating surface of chain tensioner and water pump cover,
using Tool.

Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-47, "Recommended Chemical Products and Sealants"

 .

CAUTION:

Attaching should be done within 5 minutes after coating.

c.

Tighten bolts to specified torque. Refer to 

CO-19, "Removal and

Installation"

 .

5.

Refill engine coolant system. Refer to 

CO-11, "REFILLING ENGINE COOLANT"

 .

Apply liquid gasket to the thread of water drain plug (front).
Use Genuine RTV Silicone Sealant or equivalent. Refer to 

GI-47, "Recommended Chemical

Products and Sealants"

 .

6.

Installation of the remaining components is in the reverse order of removal after this step.

After starting engine, let idle for three minutes, then rev engine up to 3,000 rpm under no load to
purge air from the high-pressure chamber of chain tensioner. Engine may produce a rattling
noise. This indicates that air still remains in the chamber and is not a matter of concern.

INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using tool. Refer to 

CO-9, "CHECKING COOLING SYSTEM FOR

LEAKS"

 .

PBIC2838E

SLC446B

Tool number

: WS39930000 (

)

PBIC2663E

 

 

 

 

 

 

 

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