Tightening Specifications
- Refer to OVERVIEW - REFRIGERANT LINES, EXPANSION VALVE, INNER HEAT EXCHANGER
- There are different versions depending on the refrigerant (R134a or R1234yf). Refer to the Parts information.
-- Replace the O-ring seals depending on the version. Refer to the Parts information.
-- Install the O-ring seals -B and F- on the connection pipes -C and E- to the evaporator.
The expansion valve is available in different versions (same housing but a different control characteristic). Allocation. Refer to the Parts information.
Inspect the refrigerant pipes leading to the evaporator for debris and damage.
Coat O-rings with refrigerant oil before installing. Refer to REFRIGERANT CIRCUIT SEALS .
Check O-ring seals for proper seating on evaporator connecting pipes.
If the heat protection insulation -2- is missing or not installed correctly, it can cause reduced output of the A/C system (change of the set control characteristic due to radiant heat).
-- The retaining plate -D- must be positioned on the connection pipes as shown in the illustration.
-- Insert the expansion valve -A- on the evaporator.
-- Tighten the bolts -G-.
-- Install the inner heat exchanger. Refer to INNER HEAT EXCHANGER, REMOVING AND INSTALLING .
-- Evacuate and fill the refrigerant circuit. Refer to appropriate service information. .
-- Operate the A/C system after charging the refrigerant circuit. Refer to A/C SYSTEM, STARTING OPERATION AFTER FILLING REFRIGERANT CIRCUIT .
Read the information for starting the A/C system after installing the A/C compressor. Refer to A/C SYSTEM, GENERAL INFORMATION .
-- Check the Diagnostic Trouble Code (DTC) memory and erase any displayed entries using the Vehicle Diagnostic Tester in the "Guided Fault Finding" function.