Nissan Altima L32. Manual - part 201

COOLING FAN

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Disassembly and Assembly of Cooling Fan

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DISASSEMBLY

1. Remove fan blade nut.
2. Remove fan blade from fan motor.
3. Remove fan motor bolts and remove fan motor from fan shroud.

ASSEMBLY

Assembly is in the reverse order of disassembly.

AWBIA0739GB

1. Fan blade

2. Fan shroud 

3. Fan motor

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WATER PUMP

WATER PUMP

Removal and Installation

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WARNING:

Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure

coolant escaping from the radiator.

CAUTION:

• When removing water pump assembly, be careful not to get 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 leaks using radiator

cap tester.

REMOVAL

1. Drain engine coolant from the radiator. Refer to 

CO-35, "Changing Engine Coolant"

.

CAUTION:

Perform when the engine is cold.

2. Remove engine coolant reservoir tank. Refer to 

CO-38, "Removal and Installation"

.

3. Remove RH wheel and tire. Refer to 

WT-66, "Adjustment"

.

4. Remove the fender protector (RH). Refer to 

EXT-19, "Removal and Installation"

 (Coupe models) or 

EXT-

40, "Removal and Installation"

 (Sedan models).

5. Remove drive belts. 
6. Remove the drive belt auto tensioner and the idler pulley. Refer to 

EM-122, "Removal and Installation of

Drive Belt Auto-tensioner"

.

7. Support engine and remove the front engine insulator and bracket. Refer to 

EM-202, "Removal and Instal-

lation"

.

8. Remove water drain plug on water pump side of cylinder block.
9. Remove IVT control valve cover and water pump cover.
10. Remove the timing chain tensioner assembly.

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1.

Water pump

2.

O-rings

WATER PUMP

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a. Pull the lever down to release the plunger stopper tab.
b. Insert the stopper pin into the tensioner body hole to hold the

lever and keep the plunger stopper tab released.

NOTE:

An allen wrench [(1.2 mm (0.047 in)] is used for a stopper pin as

an example.

c. Insert the plunger stopper tab into the tensioner body by press-

ing the slack guide.

d. Keep the slack guide pressed and hold the plunger stopper tab

in by pushing the stopper pin deeper through the lever and into

the chain tensioner body hole.

e. Make a gap between water pump gear and timing chain, by turn-

ing the crankshaft pulley approximately 20

° clockwise.

11. Remove chain tensioner. 

CAUTION:

Be careful not to drop bolts inside chain case.

12. Remove the three water pump bolts. Make a gap between water

pump gear and timing chain, by turning crankshaft pulley coun-

terclockwise until timing chain loosens on water pump sprocket.

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WATER PUMP

13. Screw M8 bolts [pitch: 1.25 mm (0.49 in) length: approx. 50 mm

(1.97 in)] into water pumps upper and lower bolt holes until they

reach the timing chain case. Then, alternately tighten each bolt

for a half turn, and pull out the 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.

14. Remove M8 bolts and O-rings from water pump.

INSPECTION AFTER REMOVAL

• Visually check that there is no significant dirt or rusting on the

water pump body and vane.

• Check that there is no looseness in the vane shaft, and that it turns

smoothly when rotated by hand.

• If the water pump does not perform properly, replace the water

pump assembly.

INSTALLATION

1. Install new O-rings to water pump.
2. Apply engine oil and coolant to the O-rings as shown.

• Locate the O-ring with white paint mark to engine front side.

3. Install the water pump.

CAUTION:

Do not allow cylinder block to interfere with the O-rings

when installing the water pump. 

• Check that timing chain and water pump sprocket are

engaged.

• Insert water pump by tightening bolts alternately and evenly.

4. Remove dust and foreign material completely from backside of chain tensioner and from installation area

of rear timing chain case.

JLC357B

SLC943A

PBIC0855E

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