9000 L4-1985cc 2.0L DOHC Turbo EFI (1987)
Snap-on Couplings
Specially developed snap-on couplings are used to connect the draining and charging equipment hoses to the compressor's service connections.
These snap-on connections are designed as so called Schrader valves and are therefore connected in two stages:
1. Press the snap-on coupling onto the compressor's service connection.
2. Turn the knob clockwise to open the valve and let the refrigerant pass through the connection.
To remove the snap on coupling, first turn the knob (2) anti-clockwise to close the valve. Then remove the snap on coupling by pressing the
spring-loaded catch (3), so that the locking sleeve (4) can be pulled up.
When the valve is pressed in, a hissing sound is heard as the valve also evacuates the refrigerant inside the snap-on coupling.
The connections for the low-pressure side and high-pressure side are differant sizes so that they cannot be mixed up.
Measuring Pressure With The Robinair 10324 Smart Cart
1. Check that the cock on the blue low-pressure hose and the cock on the red high-pressure hose on the pressure gauge stand are both closed.
