Volvo F7 gearbox airlines

Inside the right chassis rail is a small bore air line which probably has a connection to the wet tank and runs back to the compressor governor. This line has a tee, some will have a bronze filter, beside the gear box. One small bore nylon line goes to top of box and onto clutch slave. For the 16 speed box another goes to to the overdrive change on the right of the box. That is it. Simple as. There are no air control lines on the SR61 they are just air supply.
Some may or may not have a tapping from the air cylinder built into the back of the box. This is connected to a servo bolted next to it which provides an electrical interlock/dash light indicator.