Nissan Pathfinder (2007 year). Instruction — 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
.
●
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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2007 Pathfinder
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
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
.
●
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
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
CO-19
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2007 Pathfinder
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
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
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
CO-21
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2007 Pathfinder
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
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
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
.
PBIC2838E
SLC446B
Tool number
: WS39930000 (
—
)
PBIC2663E
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