Infiniti G35 (V35) Sedan. Manual - part 318

 

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Infiniti G35 (V35) Sedan. Manual - part 318

 

 

CO-20

< 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.

JPBIA0085ZZ

JPBIA0111ZZ

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:  Water  pump

JPBIA0112ZZ

WATER PUMP

CO-21

< ON-VEHICLE REPAIR >

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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 

CO-8, "Inspection"

.

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

JPBIA0118ZZ

SLC943A

CO-22

< ON-VEHICLE REPAIR >

WATER INLET AND THERMOSTAT ASSEMBLY

WATER INLET AND THERMOSTAT ASSEMBLY

Exploded View

INFOID:0000000000956355

Removal and Installation

INFOID:0000000000956356

REMOVAL

1.

Remove engine cover. Refer to 

EM-27, "Exploded View"

.

2.

Remove air duct and air cleaner case assembly (LH). Refer to 

EM-25, "Exploded View"

.

3.

Remove reservoir tank.Refer to 

CO-14, "Exploded View"

.

4.

Remove oil cooler water pipe mounting bolt, and move aside water pipe. (AWD models) Refer to 

LU-14,

"AWD : Exploded View"

.

5.

Remove engine undercover with power tool.

6.

Drain engine coolant from radiator drain plug at the bottom of radiator. Refer to 

CO-8, "Draining"

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 

GI-4, "Components"

 for symbol marks in the figure.

JPBIA0241GB

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: Do not loosen these screw,

JPBIA0261ZZ

WATER INLET AND THERMOSTAT ASSEMBLY

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Inspection

INFOID:0000000000956357

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 

CO-8, "Inspection"

.

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

Thermostat (Standard)

: Refer to 

CO-26, "Thermostat"

.

SLC949A

 

 

 

 

 

 

 

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