Heater & Cooling Unit Assembly

HEATER & COOLING UNIT ASSEMBLY

Exploded View

VTL-36 Exploded View:

Removal and Installation

REMOVAL
1. Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2. Drain engine coolant from cooling system.
3. Remove cowl top cover.
4. Remove engine cover.




5. Disconnect one-touch joint between low-pressure pipe 1 (1) and low-pressure pipe 2 (2) 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 (4) and high-pressure pipe 2 (3) 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).






8. Remove instrument panel assembly.
9. Remove defroster nozzle.
10. Remove adaptor duct.
11. Remove blower unit.
12. Remove mounting nuts (A), and then remove instrument stay (left) (1) and instrument stay (right) (2).









13. Remove clamp (A), and then disconnect drain hose (1).




14. Remove mounting bolts (A) from steering member (1).
15. Remove mounting bolts (A) from steering member (1).






16. Remove ground bolts (B) from steering member.
17. Remove steering column mounting nuts (C) and bolts (D).
18. Remove harness connector and clips of vehicle harness from steering member.
19. Remove mounting bolts (A) from steering member (1).






20. Remove steering member, and then remove heater & cooling unit assembly.

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 clicks is heard.
- After piping connection is completed, pull male-side piping by hand to make sure that connection does not come loose.
- Check for leakages when recharging refrigerant.

NOTE:
- Recharge the refrigerant.