Contents Section: Automatic HVAC System All sections

Basic System (HVAC): Overhaul Mazda 2 II рестайлинг

Automatic HVAC System 17 illustrations ~810 words

A/C UNIT DISASSEMBLY/ASSEMBLY

  1. Disassemble in the order indicated in the figure. CAUTION: If a non-specified grease is used, it may result in abnormal noise or improper operation of the links. Apply only the specified grease to each link.
  2. Assemble in the reverse order of disassembly.

Identifying A/C Unit Disassemble Order With Torque Specifications. Scheme 50

Scheme 50: Identifying A/C Unit Disassemble Order With Torque Specifications
StepPart nameDisassembly/assembly of main parts
Heater coreEvaporator temperature sensorEvaporator
1Heater pipe coverX
2Polyurethane foam (1)X
3Heater pipe bracketX
4Heater core stopperX
5Heater core (See Heater Core Removal/Installation Note .)X
6Wire clamp
7Air mix link set
8Polyurethane foam (2)X
9Adhesive polyurethane (3) (See Adhesive Polyurethane (3) Installation Note .)X
10Outlet pipe bracketX
11Adhesive polyurethane (2) (See Adhesive Polyurethane (1), (2) Removal Note .) (See Adhesive Polyurethane (1), (2) Installation Note .)X
12Adhesive polyurethane (1) (See Adhesive Polyurethane (1), (2) Removal Note .) (See Adhesive Polyurethane (1), (2) Installation Note .)X
13Insulator (See Adhesive Polyurethane (1), (2) Installation Note .)X
14Outlet pipe (See Outlet Pipe Removal Note .)X
15Expansion valveX
16Blower motorX
17CoverXX
18Air filter (See AIR FILTER REMOVAL/INSTALLATION .)XX
19Wire clamp
20Airflow mode link set
21Resistor
22A/C case (3)XX
23Evaporator temperature sensor (See Evaporator Temperature Sensor Assembly Note .)XX
24Sensor clamp (See Sensor Clamp Assembly Note .)XX
25Adhesive polyurethane (4)
26A/C case (1) (See A/C Case Disassembly Note .)X
27A/C case (2) (See A/C Case Disassembly Note .)X
28EvaporatorX
29A/C case (4)
30Polyurethane foam (3)
31Airflow mode door (1)
32Airflow mode door (2)
33Air mix door

X Applicable

AIR INTAKE DUCT DISASSEMBLY/ASSEMBLY

  1. Disassemble in the order indicated in the table. CAUTION: Apply only the specified grease to links. Otherwise abnormal noise or improper operation may result.
  2. Assemble in the reverse order of disassembly.

Identifying Air Intake Duct Disassemble Order. Scheme 51

Scheme 51: Identifying Air Intake Duct Disassemble Order

Scheme 52

Scheme 52: Air Intake Duct Case Disassembly Note
  1. Align the contacting surfaces of air intake duct case (1) and (2), and cut the adhesive polyurethane. (Scheme 52): Cutting Position Of Adhesive Polyurethane

Scheme 53

Scheme 53: EXPANSION VALVE REMOVAL

Scheme 54

Scheme 54

Scheme 55

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Scheme 56

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Scheme 57

Scheme 57

Scheme 58

Scheme 58
  1. Disconnect the negative battery cable.
  2. Collect the refrigerant. (See «REFRIGERANT CHARGING»(ref-517463-S41137354962012121200000).)
  3. Remove the air cleaner installation bolt and slide the air cleaner component aside.
  4. Remove the cooler hose (LO) installation nut, and then remove the cooler hose (LO) bracket from the vehicle stud bolt. (Scheme 53): Identifying Cooler Hose (LO) Nut And Bracket CAUTION: If moisture or foreign material enters the refrigeration cycle, cooling ability will be lowered and abnormal noise or other malfunction could occur. Always plug open fittings immediately after removing any refrigeration cycle parts.
  5. Using the SSTs (49 B061 014, 49 G061 001) disconnect the cooler pipe and cooler hose from the A/C unit while not allowing the remaining compressor oil in the A/C compressor and pipes to spill. (See «REFRIGERANT LINE REMOVAL/INSTALLATION»(ref-517465-S27124117462012121200000).) (Scheme 54): Cooler Pipe And Cooler Hose At A/C Unit
  6. Remove the following parts: Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-517497-S18570108062012121200000).) Heat duct (RH) (See «HEAT DUCT COMPONENT REMOVAL/INSTALLATION»(ref-517465-S38916655892012121200000).) Side wall (RH) (See «SIDE WALL REMOVAL/INSTALLATION»(ref-517497-S42051367322012121200000).)
  7. Disconnect the evaporator temperature sensor connector.
  8. Remove the evaporator temperature sensor wiring harness clip.
  9. Disconnect the resistor connector.
  10. Make a hole in the position shown in the figure for the adhesive polyurethane (2) and remove the outlet pipe installation bolt. (Scheme 55): Locating Outlet Pipe Bolt
  11. Cut the adhesive polyurethane (2) near the contact surfaces of the expansion valve and outlet pipe, and tear it off. (Scheme 56): Adhesive Polyurethane Cutting Position
  12. Slide the outlet pipe to the right while being careful not to allow remaining compressor oil in the outlet pipe and expansion valve to spill. (Scheme 57): Outlet Pipe, Expansion Valve And Expansion Valve Bolts
  13. Remove the expansion valve installation bolts.
  14. Remove the expansion valve while being careful not to allow the remaining compressor oil in the expansion valve and evaporator to spill.
  15. Tear off the adhesive polyurethane (2) from the expansion valve. CAUTION: Because of the possibility of condensation forming, whenever possible remove the adhesive polyurethane carefully so that it does not damage the adhesive sponge rubber on the outlet pipe.
  16. Cut the adhesive polyurethane (2) as shown in the figure and remove the adhesive polyurethane (2) from the outlet pipe near the expansion valve. (Scheme 58): Adhesive Polyurethane Cutting Position

Scheme 59

Scheme 59: EXPANSION VALVE INSTALLATION

Scheme 60

Scheme 60

Scheme 61

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Scheme 62

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Scheme 63

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Scheme 66

Scheme 66
  1. Slide the outlet pipe to the right while being careful not to allow the remaining compressor oil in the outlet pipe to spill. (Scheme 59): Expansion Valve Bolts, Expansion Valve And Outlet Pipe With Torque Specifications
  2. Install the expansion valve.
  3. Install the outlet pipe.
  4. Cut the adhesive polyurethane (1) as shown in the figure. (Scheme 60): Adhesive Polyurethane Cutting Position
  5. Attach the adhesive polyurethane (1) to the outlet pipe as shown in the figure. (Scheme 61): Attaching Adhesive Polyurethane To Outlet Pipe
  6. Roll the adhesive polyurethane (1) around the outlet pipe.
  7. Align the adhesive polyurethane (2) notch with the center of the lower surface of the expansion valve, and adhere. (Scheme 62): Aligning Adhesive Polyurethane Notch With Center Of Lower Surface Of Expansion Valve
  8. Roll on the adhesive polyurethane (2) so that it wraps around the expansion valve. (Scheme 63): Rolling On Adhesive Polyurethane
  9. Bend around the adhesive polyurethane (2) and adhere it to the outlet pipe. (Scheme 64): Bending Adhesive Polyurethane
  10. Connect the resistor connector.
  11. Install the evaporator temperature sensor wiring harness clip.
  12. Connect the evaporator temperature sensor connector.
  13. Install the following parts: Side wall (RH) (See «SIDE WALL REMOVAL/INSTALLATION»(ref-517497-S42051367322012121200000).) Heat duct (RH) (See «HEAT DUCT COMPONENT REMOVAL/INSTALLATION»(ref-517465-S38916655892012121200000).) Glove compartment (See «GLOVE COMPARTMENT REMOVAL/INSTALLATION»(ref-517497-S18570108062012121200000).)
  14. Connect the clutch pipe and cooler hose while being careful not to allow the remaining oil in the pipe and A/C unit to spill. (See «REFRIGERANT LINE REMOVAL/INSTALLATION»(ref-517465-S27124117462012121200000).) (Scheme 65): Clutch Pipe And Cooler Hose
  15. Install the cooler hose (LO) bracket. (Scheme 66): Cooler Hose (LO) Bracket Tightening torque 6.9-9.8 N.m {71-99 kgf.cm, 62-86 in.lbf}
  16. Install the air cleaner component.
  17. Charge the refrigerant. (See «REFRIGERANT CHARGING»(ref-517463-S41137354962012121200000).)
  18. Connect the negative battery cable.
  19. Perform the refrigerant system performance test. (See «REFRIGERANT SYSTEM PERFORMANCE TEST»(ref-517463-S24642051802012121200000).)