Evaporator Core: Service and Repair

EVAPORATOR ASSEMBLY

Tube And Hose Attachment At Evaporator Assembly:

REMOVE OR DISCONNECT
1. Refrigerant.
^ Recover refrigerant. Service and Repair
2. Hose assembly (9) at evaporator assembly (1).
A. Remove nut (43) holding hose assembly (9) to evaporator outlet port.
B. Pull hose assembly (9) forward to remove it.
C. Seal open end of hose assembly (9) with tape or an approved plastic cap to prevent dirt or moisture contamination.
D. If you do not intend to proceed immediately to the following step, seal open evaporator outlet port with tape or an approved plastic cap.
E. Discard seal (44).
3. Evaporator tube assembly (10) at evaporator assembly (1).
A. Remove nut (39) holding tube assembly (10) to evaporator inlet port.
B. Pull tube assembly (10) forward to remove it.
C. Seal open evaporator inlet port with tape or an approved plastic cap to prevent dirt or moisture contamination.
D. Seal opened end of tube assembly (10) with tape or an approved plastic cap to prevent dirt or moisture contamination.
E. Discard seal (40).
4. Studs (42) using a female E-7 TORX� socket.
5. Heater and air conditioning evaporator module lower case. Service and Repair
6. Evaporator mounting bracket bolt/screw and bracket.
7. Evaporator assembly (1).
^ Slide evaporator assembly (1) rearward, then down, to remove it.

INSTALL OR CONNECT
1. Evaporator assembly (1).
2. Evaporator mounting bracket and bolt/screw.

TIGHTEN
^ Bolt/screw to 1.9 Nm (17 lb. in.).

3. Heater and air conditioning evaporator module lower case. Service and Repair
4. Refrigerant oil.
^ Add 90 ml (3 fluid ounces)of fresh polyalkylene glycol (PAG) refrigerant oil GM P/N 12345923, if evaporator assembly (1) was removed.
5. Studs (42) using a female E-7 TORX� socket.
6. Tube assembly (10) to evaporator inlet port.
A. Remove tape or cap from the open end of evaporator inlet port and tube assembly.
B. Coat a new seal (40) with clean mineral base 525 viscosity refrigerant oil GM P/N 12301108 or equivalent and install it.
C. Install the tube assembly (10) to evaporator inlet port.
D. Install nut (39) at evaporator inlet port.

TIGHTEN
^ Nut (39) to 16 Nm (12 lb. ft.).

7. Hose assembly (9) to evaporator outlet port.
A. Remove tape or cap from open end of evaporator outlet port and hose assembly.
B. Coat a new seal (44) with clean mineral base 525 viscosity refrigerant oil GM P/N 12301108 or equivalent and install it.
C. Install hose assembly (9) to evaporator outlet port.
D. Install accumulator hose nut (43) at the evaporator outlet port.

TIGHTEN
^ Accumulator hose nut (43) to 16 Nm (12 lb. ft.).

8. Evacuate and recharge A/C system. Service and Repair
9. Leak-test fittings.