3 Series E46 316i (M43TU) SAL
Connect special tool 64 5 125 to retainer and screws of
expansion valve.
Tightening torque 64 53 9AZ
.
Connect special tool 64 5 121 to special tool 64 5 125.
Important!
Risk of damage: Use only nitrogen pressure bottles with
pressure reducers for leak-testing.
Pressurize evaporator to 10 bar slowly only. Excessively fast
pressurization and pressures in excess of 20 bar may cause
damage to the evaporator.
Connect nitrogen pressure bottle with pressure reducer to
pressure gauge and then connect to special tool 64 5 121
(connecting hose).
Note:
-
Testing apparatus must be leakproof.
-
Ambient temperature and temperature of vehicle must not
change during the test procedure.
-
Do not move the vehicle during this period
Apply test pressure of 10 bar slowly and close nitrogen pressure
bottle.
Check leak-tightness of testing apparatus and of connection to
refrigerant line.
Set test pressure of 10 bar is only permitted to drop by 2 bar to
8.5 bar over a test period of 1.5 hours.
If the pressure loss is greater than 1.5 bar, this indicates that
there is a leak in the evaporator unit.
RA Leak-testing evaporator
BMW AG - TIS
19.01.2013 16:53
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 2 -
