Removing the coolant hose from the passenger compartment heater
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Clamp the hoses with hose clips.
Place some paper under the inner hose connection to collect any spilled coolant.
Turn the quick-release connector (the inner of the 2 hoses) slightly in the direction of the arrow so that the lock opens.
At the same time, pull the coolant hose straight out of the coolant pipe.