M45x AWD V8-4.5L (VK45DE) (2008)
Housing Assembly HVAC: Removal and Replacement
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.
3. Remove cowl top cover.
4. Disconnect low-pressure flexible hose and high-pressure pipe 1 from evaporator.
a. Set a disconnector [high-pressure side (SST: 9253089908), low pressure side (SST: 9253089916)] on A/C piping.
b. Slide a disconnector toward vehicle front until it clicks.
c. Slide A/C piping toward vehicle front and disconnect it.
CAUTION: Cap or wrap the joint of low-pressure flexible hose, low pressure pipe 1 and high-pressure pipe 1, 2 with suitable
material such as vinyl tape to avoid the entry of air.
5. Remove electric throttle control actuator.
6. Disconnect two heater hoses from heater core.
7. Remove instrument panel & pad.
8. Remove blower unit.
9. Remove clips of vehicle harness from steering member.
10. Remove mounting nuts and bolts, and then remove instrument stays.