Low-Pressure Pipe 1 and High-Pressure Pipe 2

REFRIGERANT LINES


VQ35HR : Removal and Installation of Low-pressure Pipe 1 and High-pressure Pipe 2


REMOVAL
1. Set the temperature control switch (passenger side) at 18�C (60�F).

CAUTION:
The angle may be out, when installing the air mix door motor to the air mix door, unless the above procedure is performed.
2. Disconnect the battery cable from the negative terminal.
3. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
4. Remove cowl top cover. Locations.





5. Remove mounting bolt from low-pressure flexible hose bracket.
6. Remove high-pressure pipe 1 from vehicle clip.





7. Disconnect one-touch joints.
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 the A/C piping with suitable material such as vinyl tape to avoid the entry of air.
8. Remove instrument passenger lower panel and glove box. .
9. Remove foot grille (right). Service and Repair.
10. Remove air mix door motor (passenger side). Air Mix Door Motor.
11. Remove mode door motor (passenger side). Mode Door Motor.
12. Remove main link (right) and max. cool door link (right). Removal and Installation.





13. Remove mounting screws, and then remove evaporator cover.





14. Remove mounting bolt, and then remove low-pressure pipe 1 and high-pressure pipe 2.

CAUTION:
Cap or wrap the joint of the A/C piping and expansion valve with suitable material such as vinyl tape to avoid the entry of air.

INSTALLATION
Installation is basically the reverse order of removal.

CAUTION:
- Replace O-rings with new ones. Then apply compressor oil to them when installing.
- Female-side piping connection is thin and easy to deform. Slowly insert the male-side piping straight in axial direction.
- Insert piping securely until a click is heard.
- After piping connection is completed, pull male-side piping by hand to check that connection does not come loose.
- Check for leakages when recharging refrigerant.

Low-pressure flexible hose bracket mounting bolt : 4.2 Nm (0.43 kg-m, 37 in-lb)