Nissan Murano Z50 (2005 year). Manual - part 10

HEATER & COOLING UNIT ASSEMBLY

ATC-121

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12. Remove steering member mounting bolts and steering column mounting nuts, and then remove steering

member.

13. Remove heater & cooling unit.

INSTALLATION

Installation is basically the reverse order of removal.

CAUTION:

●

Replace O-rings of A/C piping with new ones, and then apply compressor oil to it when installing
it.

●

Connection point for female-side piping is thin. So, when inserting male-side piping, take care not
to deform female-side piping. Slowly insert in axial direction.

●

Insert one-touch joint connection point securely until it clicks.

●

After piping has been connected, pull male-side piping by hand to make sure piping does not
come off.

●

When recharging refrigerant, check for leaks.

NOTE:

●

When filling radiator with coolant, refer to 

CO-9, "Changing Engine Coolant"

 .

●

Recharge the refrigerant.

RJIA1827E

Heater & cooling unit mounting bolt

Tightening torque

: 6.8 N·m (0.69 kg-m, 60 in-lb) 

Steering member mounting nut and bolt

Tightening torque

: 12 N·m (1.2 kg-m, 9 ft-lb)

ATC-122

HEATER & COOLING UNIT ASSEMBLY

Revision: 2005 August

2005 Murano

Disassembly and Assembly

AJS00101

1.

Adaptor duct

2.

Heater  & cooling case (left)

3.

Mode door motor bracket

4.

Mode door motor

5.

Instrument lower cover bracket

6.

Aspirator

7.

Aspirator duct

8.

Front heater duct (left)

9.

Sub harness

10. Heater core

11.

Foot duct (passenger side)

12. Front heater duct (right)

13. Heater core cover

14. Air mix door motor (passenger side) 15. Evaporator cover

16. Low-pressure pipe2

17. High-pressure pipe2

18. Cooler pipe grommet

RJIA3977E

HEATER & COOLING UNIT ASSEMBLY

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19. Heater & cooling case (right)

20. Insulator

21. Air mix door motor (drive side)

22. Defroster door lever

23. Max. cool door lever

24. Main link

25. Ventilator door lever

26. Ventilator door link

27. Foot duct (left)

28. Ventilator door

29. Heater pipe support

30. Intake sensor

31. Intake sensor bracket

32. Adaptor cover

33. Expansion valve

34. Evaporator

35. Defroster door

36. Defroster door link

37. Max. cool door link

38. Max. cool door (left)

39. Center case

40. Heater pipe grommet

41. Air mix door (Slide door)

42. Max. cool door (right)

ATC-124

MODE DOOR MOTOR

Revision: 2005 August

2005 Murano

MODE DOOR MOTOR

PFP:27731

Removal and Installation

AJS00102

REMOVAL

1.

Remove front heater duct (left). Refer to 

ATC-130, "Removal of Front Heater Ducts"

 .

2.

Remove BCM. Refer to 

BCS-16, "Removal and Installation of BCM"

 .

3.

Remove mode door mounting screws from mode door motor.

4.

Disconnect connector, and then remove mode door motor.

INSTALLATION

Installation is basically the reverse order of removal.

RJIA1830E

AIR MIX DOOR MOTOR

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AIR MIX DOOR MOTOR 

PFP:27732

Removal and Installation

AJS00103

REMOVAL
Driver Side

1.

Set the temperature control dial (driver side) at 18

°

C (60

°

F), and then disconnect the battery cable from

negative terminal.

2.

Remove instrument driver lower panel. Refer to 

IP-11, "Removal and Installation"

 .

3.

Remove mounting screws, and then remove air mix door motor.

4.

Disconnect air mix door motor connector.

Passenger Side

1.

Set the temperature control dial (passenger side) at 18

°

C (60

°

F), and then disconnect the battery cable

from negative terminal. 

2.

Remove blower unit. Refer to 

ATC-114, "BLOWER UNIT"

 .

3.

Remove mounting screws, and then remove air mix door motor.

4.

Disconnect air mix door motor connector.

INSTALLATION

Installation is basically the reverse order of removal.

RJIA1831E

RJIA1832E

ATC-126

HEATER CORE

Revision: 2005 August

2005 Murano

HEATER CORE

PFP:27140

Removal and Installation

AJS0016C

REMOVAL

1.

Remove heater & cooling unit assembly. Refer to 

ATC-120, "HEATER & COOLING UNIT ASSEMBLY"

 .

2.

Remove air mix door motor (passenger side). Refer to 

ATC-125, "AIR MIX DOOR MOTOR"

 .

3.

Remove foot duct (right). Refer to 

ATC-130, "Removal of Foot Ducts"

 .

4.

Remove mounting screw, and then remove heater core cover.

5.

Remove mounting screw, and then remove heater pipe support and heater pipe grommet.

6.

Slide heater core to passenger side.

INSTALLATION

Installation is basically the reverse order of removal.

SJIA0530E

DUCTS AND GRILLES

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DUCTS AND GRILLES

PFP:27860

Removal and Installation

AJS00104

REMOVAL

Removal of Center Ventilator Grilles

1.

Remove center ventilator. Refer to 

IP-11, "Removal and Installation"

 .

2.

Remove mounting clips, and then remove center ventilator
grilles.

Removal of Side Ventilator Grilles

1.

Remove side ventilator assembly. Refer to 

IP-11, "Removal and Installation"

 .

2.

Remove mounting screw and clips, and then remove side venti-
lator grilles.

1.

Defroster nozzle

2.

Side defroster duct (left)

3.

Ventilator duct

4.

Side defroster grille (left)

5.

Side ventilator grille (left)

6.

Center ventilator grille (left)

7.

Center ventilator grille (right)

8.

Side ventilator grille (right)

9.

Instrument panel

10. Side defroster grille (right)

11. Side defroster duct (right)

RJIA1833E

RJIA1834E

RJIA1835E

ATC-128

DUCTS AND GRILLES

Revision: 2005 August

2005 Murano

Removal of Rear Ventilator Grilles

1.

Remove center pillar lower garnish. Refer to 

EI-32, "CENTER PILLAR LOWER GARNISH"

 .

2.

Remove mounting clips, and then remove rear ventilator grilles.

Removal of Defroster Nozzle, Ducts and Ventilator Ducts

1.

Remove instrument panel assembly. Refer to 

IP-11, "Removal and Installation"

 .

2.

Remove mounting screws, and then remove side defroster ducts.

3.

Remove mounting screws, and then remove defroster nozzle.

4.

Remove mounting screws, and then remove ventilator duct.

Removal of Side Defroster Grilles

1.

Remove instrument side finisher. Refer to 

IP-11, "Removal and Installation"

 .

2.

Remove mounting clip, and then remove side defroster grilles.

RJIA1836E

RJIA1837E

RJIA1838E

DUCTS AND GRILLES

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Removal of Rear Ventilator Ducts

1.

Remove center console. Refer to 

IP-18, "Removal and Installation"

 .

2.

Slide rear ventilator duct 2 toward vehicle rear, and then remove it.

3.

Remove mounting clips and then remove rear ventilator duct 1.

4.

Remove floor carpet. Refer to 

EI-34, "Removal and Installation"

 .

5.

Remove mounting screws, and then remove rear ventilator duct 3.

RJIA1839E

RJIA1840E

ATC-130

DUCTS AND GRILLES

Revision: 2005 August

2005 Murano

Removal of Front Heater Ducts

1.

Remove mounting screw, and then remove front heater duct
(left).

2.

Remove front heater duct (right).

Removal of Foot Ducts

1.

Remove instrument driver lower panel. Refer to 

IP-11, "Removal and Installation"

 .

2.

Remove mounting screws, and then remove foot duct (driver
side).

3.

Remove blower unit. Refer to 

ATC-114, "BLOWER UNIT"

 .

4.

Remove mounting screws, and then remove foot duct (passen-
ger side).

RJIA3984E

RJIA3985E

RJIA1841E

RJIA1842E

DUCTS AND GRILLES

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Removal of Floor Ducts

1.

Remove front seats and center console. Refer to 

SE-104, "FRONT SEAT"

  and 

IP-17, "CENTER CON-

SOLE ASSEMBLY"

 .

2.

Slide front floor duct downward, and then remove it.

3.

Peel back floor carpet to a point where rear floor duct is visible.

4.

Remove mounting clip, and then remove rear floor ducts.

INSTALLATION

Installation is basically the reverse order of removal.

RJIA1843E

RJIA1844E

ATC-132

REFRIGERANT LINES

Revision: 2005 August

2005 Murano

REFRIGERANT LINES

PFP:92600

HFC-134a (R-134a) Service Procedure

AJS00105

SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant

WARNING:

Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting
requirements of SAE J-2210 [HFC-134a (R-134a) recycling equipment] or J-2209 [HFC-134a (R-134a)
recovery equipment]. If accidental system discharge occurs, ventilate work area before resuming ser-
vice. Additional health and safety information may be obtained from refrigerant and lubricant manu-
facturers.

Evacuating System and Charging Refrigerant

WJIA0614E

WJIA0615E

REFRIGERANT LINES

ATC-133

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*1

ATC-22, "LUBRICANT RETURN 
OPERATION"

*2

ATC-149, "Checking for Refrigerant 
Leaks"

*3

ATC-151, "CHECKING PROCE-
DURE"

*4

ATC-87, "PERFORMANCE TEST 
DIAGNOSIS"

*5

ATC-6, "CONTAMINATED REFRIG-
ERANT"

SJIA1275E

ATC-134

REFRIGERANT LINES

Revision: 2005 August

2005 Murano

Components

AJS00106

Refer to 

ATC-8, "Precautions for Refrigerant Connection"

 .

SJIA1140E

REFRIGERANT LINES

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Removal and Installation of Compressor

AJS00107

REMOVAL

1.

Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.

2.

Remove air duct (inlet). Refer to 

EM-16, "AIR CLEANER AND AIR DUCT"

 .

3.

Remove engine undercover, using power tools.

4.

Remove mounting nuts from low-pressure flexible hose and
high-pressure flexible hose.

CAUTION:

Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air. 

5.

Disconnect compressor connector.

6.

Remove A/C compressor belt. Refer to 

EM-13, "DRIVE BELTS"

.

7.

Remove idler pulley bracket.

8.

Remove engine oil cooler hose bracket mounting bolts from compressor, using power tools.

9.

Remove mounting bolts from compressor, using power tools.

10. Remove compressor from passenger side of the vehicle.

INSTALLATION

Installation is basically the reverse order of removal.

RJIA2795E

RJIA2983E

RJIA2797E

ATC-136

REFRIGERANT LINES

Revision: 2005 August

2005 Murano

CAUTION:

●

Replace O-rings of low-pressure flexible hose, high-pressure pipe and high-pressure flexible hose
with new ones, and then apply compressor oil to it when installing it.

●

When recharging refrigerant, check for leaks.

Removal and Installation of Compressor Clutch

AJS00108

REMOVAL
Overhaul

1.

When removing center bolt, hold clutch disc with a clutch disc
wrench (SST).

2.

Remove clutch disc.

3.

Remove snap ring using a external snap ring pliers.

4.

Position center pulley puller on the end of drive shaft, and
remove pulley assembly using any commercially available pul-
ley puller (SST).
To prevent pulley groove from being deformed, puller claws
should be positioned into the edge of pulley assembly.

5.

Remove field coil mounting screws.

6.

Remove compressor connector from connector bracket.

Idler pulley bracket mounting bolt 

Tightening torque

: 28 N·m (2.9 kg-m, 21 ft-lb)

RJIA1879E

RJIA1880E

RJIA1881E

RJIA1882E