M35x AWD V6-3.5L (VQ35HR) (2010)
Housing Assembly HVAC: Service and Repair
Removal and Installation
HEATER & COOLING UNIT ASSEMBLY
Removal and Installation
REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Drain coolant from cooling system. See: Engine, Cooling and Exhaust/Cooling System/Coolant/Service and Repair/Changing Engine Coolant
(VQ35HR) or See: Engine, Cooling and Exhaust/Cooling System/Coolant/Service and Repair/Changing Engine Coolant (VK45DE).
3. Remove cowl top cover. See: Body and Frame/Cowl/Cowl Moulding / Trim/Locations.
4. Remove engine cover. See: Engine, Cooling and Exhaust/Engine/Intake Manifold/Service and Repair/Intake Manifold Collector/Removal and
Installation (VQ35HR) or See: Engine, Cooling and Exhaust/Engine/Intake Manifold/Service and Repair/Intake Manifold/Removal and
Installation (VK45DE).
5. Disconnect one-touch joint between low-pressure pipe 1 (1) and low-pressure pipe 2 (2) (VQ35HR) or low-presure flexible hose
(2) (VK45DE) with disconnector (SST: 9253089916) (A).
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry of air.
6. Disconnect one-touch joint between high-pressure pipe 1 (3) and high-pressure pipe 2 (4) with disconnector (SST:
9253089908).
CAUTION:
Cap or wrap the joint of the A/C piping with suitable material such as vinyl tape to avoid the entry of air.
7. Remove clamps (A), and then disconnect heater hoses (1). (VQ35HR)
8. Remove clamps, and then disconnect heater hoses. (VK45DE)
9. Remove instrument panel & pad. See: Body and Frame/Interior Moulding / Trim/Dashboard / Instrument Panel/Locations/Instrument Panel.
10. Remove blower unit. See: Blower Motor/Service and Repair/Blower Unit/Removal and Installation.
11. Remove clips of vehicle harness from steering member.