Nissan Versa Sedan. Manual - part 160

CO-20

< REMOVAL AND INSTALLATION >

[HR16DE]

WATER PUMP

• Visually check for significant dirt or rust on the water pump body

and vane (A) and replace as necessary.

• Check that the vane shaft turns smoothly by hand and is not

excessively loose.

• Replace the water pump assembly if the water pump does not per-

form properly.

INSTALLATION

Installation is in the reverse order of removal.

• Tighten water pump bolts in order as shown.

CAUTION:

• Do not allow the water pump vane to contact any other parts.

• Water pump cannot be disassembled and must be replaced as

an assembly.

• Do not reuse gasket.

• Sealing surface must be clean and free of dents or flaws.

INSPECTION AFTER INSTALLATION

• Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to 

MA-12, "Fluids and Lubricants"

.

• Use procedure below to check for fuel leakage.

• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at connection points.

• Start engine. With engine speed increased, check again for fuel leakage at connection points.

• Run engine to check for unusual noise and vibration.

NOTE:

If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide

may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop

after hydraulic pressure rises.

• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids, includ-

ing engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down engine, again check oil/fluid levels, including engine oil and engine coolant. Refill to spec-

ified level, if necessary.

• Summary of the inspection items:

*Power steering fluid, brake fluid, etc.

PBIC3808E

KBIA3393J

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission/
transaxle fluid 

A/T and CVT Models

Leakage

Level/Leakage

Leakage

M/T Models

Level/Leakage

Leakage

Level/Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gas

—

Leakage

—

THERMOSTAT

CO-21

< REMOVAL AND INSTALLATION >

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THERMOSTAT

Exploded View

INFOID:0000000009269215

Removal and Installation

INFOID:0000000009269216

WARNING:

Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure

engine coolant escaping from the radiator. Wrap a thick cloth around the radiator cap. Slowly turn it a

quarter of a turn to release built-up pressure. Carefully remove radiator cap by turning it all the way.

REMOVAL

1. Drain engine coolant from radiator. Refer to 

CO-8, "Draining Engine Coolant"

. 

CAUTION:

• Perform this step when engine is cold.

• Do not spill engine coolant on drive belt.

2. Remove air duct. Refer to 

EM-25, "Removal and Installation"

.

3. Remove oil level gauge and guide. Refer to 

EM-47, "Exploded View"

.

4. Disconnect radiator hose (lower) from water inlet. Refer to 

CO-14, "Exploded View"

.

5. Remove water inlet, thermostat, and rubber ring.

NOTE:

Engine coolant will leak from cylinder block, so have a receptacle ready below.

INSPECTION AFTER REMOVAL

Thermostat

• Place a thread (A) so that it is caught in the valves of thermostat

(1). Immerse fully in a container (B) filled with water. Heat while

stirring.

• The valve opening temperature is the temperature at which the

valve opens and falls from the thread.

• Continue heating. Check the full open valve lift amount.

• After checking the maximum valve lift amount, lower the water

temperature and check the valve closing temperature. 

1.

Radiator hose (lower)

2.

Water inlet

3.

Rubber ring

4.

Thermostat

A.

To radiator

PBIC3810E

Standard: Refer to 

CO-26, "Standard and 

Limit"

.

PBIC3314J

CO-22

< REMOVAL AND INSTALLATION >

[HR16DE]

THERMOSTAT

• If out of the standard specification range, replace the thermostat.

INSTALLATION

Installation is in the reverse order of removal.

Thermostat 

• Install thermostat making sure rubber ring (1) groove fits securely

to thermostat flange (A).   

CAUTION:

Do not reuse rubber ring.

• Install thermostat (2) into the cylinder block (1) with jiggle valve (A)

facing upward. 

Water Inlet

After installation, attach the water inlet clip (A) on the oil level gauge

guide (1) positioned at location (B) as shown.

INSPECTION AFTER INSTALLATION

• Before starting engine, check oil/fluid levels, including engine coolant and engine oil. If less than required

quantity, fill to the specified level. Refer to 

MA-12, "Fluids and Lubricants"

.

• Use procedure below to check for fuel leakage.

• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-

age at connection points.

• Start engine. With engine speed increased, check again for fuel leakage at connection points.

• Run engine to check for unusual noise and vibration.

NOTE:

If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide

may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop

after hydraulic pressure rises.

• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids, includ-

ing engine oil and engine coolant.

• Bleed air from passages in lines and hoses, such as in cooling system.

• After cooling down engine, again check oil/fluid levels, including engine oil and engine coolant. Refill to spec-

ified level, if necessary.

• Summary of the inspection items:

JPBIA4229ZZ

PBIC3812E

PBIC3755E

THERMOSTAT

CO-23

< REMOVAL AND INSTALLATION >

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*Power steering fluid, brake fluid, etc.

Item

Before starting engine

Engine running

After engine stopped

Engine coolant

Level

Leakage

Level

Engine oil

Level

Leakage

Level

Transmission/
transaxle fluid 

A/T and CVT Models

Leakage

Level/Leakage

Leakage

M/T Models

Level/Leakage

Leakage

Level/Leakage

Other oils and fluids*

Level

Leakage

Level

Fuel

Leakage

Leakage

Leakage

Exhaust gas

—

Leakage

—