removing gas system from tb42

[taslucas]

The may be a little bit of gas in the line - but as the tank has a one way valve, you can crack it and let the little out.

Ahhh cool, so the one way valve is on the tank end?

[taslucas]

I think ill hold off removing the filler pipe until I see a mechanic mate.

I'm guessing the mixer can be removed and the coolant hose just joined together.

[threedogs]

Yes all that can be removed and new heater hoses installed,
remove converter and any solenoids, should be no gas if the tank is turned off
Filler pipe should come off when you drop the tank as one

[taslucas]

Not going to worry about new hoses, just remove mixer and join hoses. They have a join closer to the thermostat so I'll connect them together there.

There was gas in the line because it is sealed between the shut off solenoid in the engine bay and the tap on the cylinder.

[taslucas]

Also its where the filler pipe is connected to the plate under the fuel cap flap that I'm talking about. I don't want to just start undoing things because there is no tap on the tank for the filler pipe. Is there a one way valve in the tank end oronly at the filler end (where you screw the bowser nozzle on)

[Rossco]

I pulled out the gas when I did my conversion, was pretty straight forward. Turned off the tap on the tank, cracked open the pipes, not too much gas came out, then stipped everything. With the filler I kept it all togeter as I dont think you can isolate it. Just had to remove the plate in the filler area from memory but they would all differ a bit. Ended up putting in a duel filler neck so didnt need it anyway. Mine was still half full of gas when I pulled the tank out and was bloody heavy and awkward, just take care get some good jacks or something ready.

[GQ TANK]

There are actualy 2 one way valves - one at the tank (integral) and one at the external hose connection. see http://www.propane101.com/fillvalve.htm


I have removed a couple of tanks -

1. turn off the gas valve at the tank

2. Crack the hoses - should be a short hiss as the gas in the line escapes (keep your hands away from the gas as it will give you a cold burn)

3. Remove all the hoses and drop the tank

If you are converting back to petrol only - on efi vehicles check the supply line for the injectors as often they insert a relay to turn the injectors off on LPG

[menace 2]

you will have to take everything out including the threaded filler and the gas compliance plate in the engine bay for inspection...you will have to get it certified by a gas place that there is nothing pertaining to gas installation on the car...de-commissioning I think they call it