Willis WMI12MH16S Service Manual page 123

Steps
11.Remove gas valve and liquid valve
Twist off the 2 bolts fixing the valve sub-assy.
Unsolder the soldering joint between gas valve and
air-return pipe and then remove the gas valve.
(note: when unsoldering the soldering joint, wrap the
gas valve with wet cloth completely to avoid the
damage to valve, and release all refrigerant
completely at first). Unsolder the soldering joint
between liquid valve and connection pipe of liquid
valve, and then remove the liquid valve.
12.Remove compressor
Twist off the 3 foot nuts on compressor and then
remove the compressor.
13.Remove left side plate
Twist off the screws connecting the left side plate and
chassis with screwdriver, and then remove the left
side plate.
Procedure
left side plate
gas valve
liquid valve
compressor