[volvo144gl]

Hi , I need to replace the 3 hoses at the rear of the engine that go to the heater

I’ve a couple of questions

1. If I disconnect each hose from the engine first am I likely to get much water coming out from the hoses when I disconnect them from the heater inside the car. Do I need loads of towels etc to stop it getting into the carpet.

2. Do I need to prime the heater/ hoses with water in any way to avoid air locks , or will the air just work it’s way out?

Any thoughts / comments appreciated