14-20. AIR-CONDITIONING EVAPORATOR MAINTENANCE (R-12)
This task covers:
General mechanic's tool kit:
Air-conditioning system discharged
Evaporator blower motor housing removed
General Safety Instructions
Air-conditioner system must be discharged,
prior to replacing components.
Air conditioner system must be discharged, prior to replacing
components in vapor system. Failure to do this may result in
injury to personnel or damage to equipment.
Cover or plug all open hoses and connections immediately after
disconnection to prevent contamination. Remove all plugs prior to
The following procedure applies to vehicles with R-12 refrigerant
only. Refer to para. 14-27.4 for vehicles with R-134a refrigerant.
Disconnect tube assembley (10) from sight glass line (8). Remove and discard O-ring (9).
Disconnect low-pressure line (12) from evaporator outlet line (15). Remove and discard O-ring (13).
Prior to removal, tag leads for installation.
Disconnect two wires (11) from low-pressure switch (14).
Avoid kinking or excessive bending of cold control probe during
Evaporator coil and evaporator duct clearances are tight, avoid
forcing or twisting during removal.
Remove cold control probe (7) from coils (3) and position probe (7) away from evaporator (2).
Loosen clamp (5) and disconnect drain tube (6) from drain pan (4).
Remove five screws (1) and evaporator (2) from evaporator duct (16).