Infiniti G35 (V35) Sedan. Manual — part 318
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< ON-VEHICLE REPAIR >
WATER PUMP
13. Remove timing chain tensioner (primary) as follows:
a.
Remove lower mounting bolt (1).
b.
Loosen upper mounting bolt (2) slowly, and then turn chain ten-
sioner (primary) (3) on the upper mounting bolt so that plunger
(4) is fully expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body
of timing chain tensioner (primary).
c.
Remove upper mounting bolt, and then remove timing chain tensioner (primary).
14. Remove water pump as follows:
a.
Remove three water pump mounting bolts. Secure a gap between water pump gear and timing chain, by
turning crankshaft counterclockwise until timing chain looseness on water pump sprocket becomes maxi-
mum.
b.
Screw M8 bolts (A) [pitch: 1.25 mm (0.049 in) length: approx. 50
mm (1.97 in)] into water pumps upper and lower mounting bolt
holes until they reach timing chain case. Then, alternately
tighten each bolt for a half turn, and pull out water pump (1).
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.
INSTALLATION
1.
Install new O-rings to water pump.
• Apply engine oil to O-ring (1) and engine coolant to O-ring (3)
as shown in the figure.
• Locate O-ring with yellow paint mark (A) to front side.
• Locate O-ring with light blue paint mark (B) to rear side.
2.
Install water pump.
CAUTION:
Do not allow cylinder block to nip O-rings when installing water pump.
• Make sure timing chain and water pump sprocket are engaged.
• Insert water pump by tightening mounting bolts alternately and evenly.
3.
Install timing chain tensioner (primary) as follows:
a.
Turn crankshaft clockwise so that timing chain on the timing chain tensioner (primary) side is loose.
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JPBIA0111ZZ
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: Water pump
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WATER PUMP
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b.
Pull plunger stopper tab (A) up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger (D).
NOTE:
Plunger stopper tab and lever (C) are synchronized.
c.
Push plunger into the inside of tensioner body.
d.
Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.
e.
To secure lever, insert stopper pin (E) through hole of lever into
tensioner body hole (B).
• The lever parts and the tab are synchronized. Therefore, the
plunger will be secured under this condition.
NOTE:
Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the stopper pin.
f.
Install timing chain tensioner (primary).
• Remove dust and foreign material completely from backside of timing chain tensioner (primary) and
from installation area of rear timing chain case.
g.
Remove stopper pin.
h.
Make sure again that timing chain and water pump sprocket are engaged.
4.
Install in the reverse order of removal for remaining parts.
• 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
INFOID:0000000000956354
INSPECTION AFTER REMOVAL
• Check for badly rusted or corroded water pump body assembly.
• Check for rough operation due to excessive end play.
• If anything is found, replace water pump.
INSPECTION AFTER INSTALLATION
• Check that the reservoir tank cap is tightened.
• Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
the radiator cap tester (commercial service tool). Refer to
.
• Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
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SLC943A
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WATER INLET AND THERMOSTAT ASSEMBLY
WATER INLET AND THERMOSTAT ASSEMBLY
Exploded View
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Removal and Installation
INFOID:0000000000956356
REMOVAL
1.
Remove engine cover. Refer to
2.
Remove air duct and air cleaner case assembly (LH). Refer to
.
3.
Remove reservoir tank.Refer to
4.
Remove oil cooler water pipe mounting bolt, and move aside water pipe. (AWD models) Refer to
5.
Remove engine undercover with power tool.
6.
Drain engine coolant from radiator drain plug at the bottom of radiator. Refer to
CAUTION:
• Perform this step when the engine is cold.
• Do not spill engine coolant on drive belts.
7.
Disconnect radiator hose (lower).
8.
Disconnect intake valve timing control valve harness connector (LH), and remove intake valve timing con-
trol solenoid.
9.
Remove water inlet and thermostat assembly (1).
CAUTION:
Do not disassemble water inlet and thermostat assembly.
Replace them as a unit, if necessary.
INSTALLATION
Note the following, and install in the reverse order of removal.
• Be careful not to spill engine coolant over engine room. Use rag to absorb engine coolant.
1.
Gasket
2.
Water inlet and thermostat assembly
Refer to
for symbol marks in the figure.
JPBIA0241GB
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: Do not loosen these screw,
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WATER INLET AND THERMOSTAT ASSEMBLY
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Inspection
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INSPECTION AFTER REMOVAL
1.
Check valve seating condition at ordinary room temperatures. It should seat tightly.
2.
Check valve operation.
• If the malfunctioning condition, when valve seating at ordinary
room temperature, or measured values are out of the standard,
replace water inlet and thermostat assembly.
INSPECTION AFTER INSTALLATION
• Check that the reservoir tank cap is tightened.
• Check for leaks of engine coolant using the radiator cap tester adapter [SST: EG17650301 (J33984-A)] and
the radiator cap tester (commercial service tool). Refer to
.
• Start and warm up the engine. Visually make sure that there is no leaks of engine coolant.
Thermostat (Standard)
: Refer to
.
SLC949A
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