A/C Compressor - Replacing Heat Damaged Clutches
84audi2Applies To AUDI 5000S
CIS
1984
Group
87
Subject A/C Compressor Clutch
Part Identifier 8727
Key Points Replacing heat damaged A/C Compressor Clutches
C
Number
84-01
March 8, 1984
Before replacing heat damaged A/C compressor clutches, perform the following:
- discharge A/C refrigerant system
- check expansion tube for cleanliness and blockages
- evacuate and recharge refrigerant system
^ 1100 g (38 oz) refrigerant R-12
- run vehicle with A/C ON
- measure voltage and amperage at electrical connector of A/C compressor clutch
- record findings on repair order
Note
First stage radiator cooling fan must run when A/C is switched ON. Second stage radiator cooling fan runs when refrigerant system pressure reaches 229 psi (15.8 bar) and returns to first stage when pressure drops to 191 psi (13.2 bar).
- check operation of second stage radiator cooling fan
- record findings on repair order
- replace compressor clutch
If A/C system will not operate with old compressor clutch, perform the following:
- discharge A/C refrigerant system
- check expansion tube for cleanliness and blockages
- replace A/C compressor clutch
- evacuate and recharge A/C refrigerant system
WARNING
Always wear safety goggles when charging or discharging system.
Be sure work area is well ventilated. R-12 is heavier than air and can accumulate in areas of poor air circulation.
Avoid inhaling fumes when using flame type leak detector. R-12 becomes poisonous gas after coming into contact with open flame.
Note
Transfer all recorded data to the warranty tag with submitted clutch.