Nissan Quest E52. Instruction — part 287
CO-18
< REMOVAL AND INSTALLATION >
COOLING FAN
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Only use genuine parts for cooling fan mounting bolt and observe the specified torque (to prevent
radiator from being damaged).
NOTE:
Cooling fans are controlled by ECM. For details, refer to
EC-45, "COOLING FAN CONTROL : System
.
Disassembly and Assembly
INFOID:0000000009650549
DISASSEMBLY
1.
Remove cooling fan mounting nuts, and then remove the cooling fans (RH and LH).
2.
Remove fan motors (RH and LH).
ASSEMBLY
Note the following, and assemble in the reverse order of disassembly.
CAUTION:
RH and LH cooling fans are different. Be careful not to misassemble them.
• Install each fan in the following position.
• Secure the harness tightly to the fan shroud to prevent the fan rotation area from being loose.
Inspection
INFOID:0000000009650550
INSPECTION AFTER DISASSEMBLY
Cooling Fan
Inspect cooling fan for crack or unusual bend.
• If anything is found, replace cooling fan.
Right side
: 11 blades
Left side
: 9 blades
WATER PUMP
CO-19
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
WATER PUMP
Exploded View
INFOID:0000000009650551
Removal and Installation
INFOID:0000000009650552
CAUTION:
• When removing water pump assembly, be careful not to get engine coolant on drive belt.
• Water pump cannot be disassembled and should be replaced as a unit.
• After installing water pump, connect hose and clamp securely, then check for leakage using the radi-
ator cap tester (commercial service tool) and the radiator cap tester adapter (commercial service
tool).
REMOVAL
1.
Remove the following parts.
• Cowl top extension.
• Engine under cover
• Front road wheel and tire
• Splash guard (RH): Refer to
2.
Drain engine coolant from radiator. Refer to
.
CAUTION:
• Perform this step when the engine is cold.
• Never spill engine coolant on drive belt.
3.
Remove drive belt. Refer to
EM-25, "Removal and Installation"
.
4.
Remove idler pulleys and harness bracket. Refer to
EM-25, "Removal and Installation"
.
1.
Timing chain tensioner (primary)
2.
Valve timing control cover gasket
(bank 1)
3.
Valve timing control cover (bank 1)
4.
Water drain plug (front)
5.
Water pump cover
6.
O-ring
7.
O-ring
8.
Water pump
A.
Apply engine coolant
B.
Identify with white mark
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Should be lubricated with oil.
: Sealing point
JPBIA2460GB
CO-20
< REMOVAL AND INSTALLATION >
WATER PUMP
5.
Remove torque rod (upper). Refer to
EM-56, "Removal and Installation"
.
6.
Remove water drain plug (front) on water pump side of cylinder block to drain engine coolant from engine
inside.
7.
Remove valve timing control cover (bank 1) and water pump cover from front timing chain case.
• Use the seal cutter [SST: KV10111100 (J-37228)] to cut liquid gasket for removal.
8.
Remove timing chain tensioner (primary) (1) as follows:
a.
Remove lower mounting bolt (A).
CAUTION:
Be careful not to drop mounting bolt inside timing chain
case.
b.
Loosen upper mounting bolt (B) slowly, and then turn chain ten-
sioner (primary) on the mounting bolt so that plunger (C) is fully
expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body
of timing chain tensioner (primary).
c.
Remove timing chain tensioner (primary). Refer to
EM-67, "Removal and Installation"
.
d.
Turn crankshaft pulley clockwise so that timing chain on the tim-
ing chain tensioner (primary) side is loose.
9.
Remove water pump as follows:
NOTE:
The use of the following item simplifies the procedure.
• Thin plastic sheet cut as shown in the figure.
a.
Remove three water pump mounting bolts.
b.
Turn the crankshaft pulley counterclockwise to slack the water pump side timing chain for allowance.
• With the timing chain around water pump sprocket held with fingers, turn crank pulley counterclockwise
to the position where the timing chain cannot be pulled in cylinder head direction.
JPBIA1537ZZ
1
: Crankshaft pulley
JPBIA0446ZZ
a
:60 mm (2.36 in)
b
:140 mm (5.51 in)
JPBIA4771ZZ
WATER PUMP
CO-21
< REMOVAL AND INSTALLATION >
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
c.
Insert sheet (A) between timing chain and water pump sprocket
(1) of water pump housing.
d.
Screw bolts (B) of size M8 x 1.25 (threads length: approx. 50
mm) into the upper and lower bolt holes used for mounting water
pump and tighten the bolts alternately by half turn all the way to
pull out water pump (1).
• Pull out water pump straight to protect the mounting part from
damage caused by vane.
• Do not allow sprocket to interfere with timing chain.
10. Remove M8 bolt and two O-rings from water pump.
INSTALLATION
CAUTION:
Do not reuse O-rings.
1.
Install new O-rings to water pump.
CAUTION:
Do not reuse O-rings.
• Clean mounting grooves of O-ring to remove foreign matter.
• Install O-ring with a white identification mark to the engine front side (sprocket side) and O-ring with no
identification mark to the engine rear side (vane side).
CAUTION:
Each O-ring is made of different material. Always install appropriate O-ring to the correct posi-
tion.
2.
Install water pump.
a.
Insert water pump by widening timing chain (1) with sheet (A) so
as not to allow O-ring to interfere with timing chain and the cor-
ner of cylinder block.
• Apply engine oil around the O-ring with a white identification
mark.
• Apply LLC around the O-ring with no identification mark.
• Insert water pump direct to cylinder block.
• Do not allow O-ring to be displaced.
• Press into water pump by tightening the mounting bolts alter-
nately and evenly.
• Check timing chain and water pump sprocket for proper
engagement.
3.
Install timing chain tensioner (primary) as follows:
a.
Completely remove dust and foreign matter from the back of chain tensioner (primary) and the mounting
surface on the rear timing chain case.
JPBIA4675ZZ
A
:Sheet
JPBIA4676ZZ
JPBIA4674ZZ
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст