Light Aircraft Association

During my pre flight checks I noticed that my heat exchanger for my cabin heat was loose on the exhaust stub (sort of a sleeve that fits over the stub) is this normal or should it be tight at each end ?
any thoughts much appreciated

Trev

It should certainly not be loose as vibration will eventually cause it to fret it's way through the exhaust pipe allowing exhaust gasses (CO) into your cabin heat, and you don't want that.
When I bought my own little aeroplane it had a poorly executed home-brewed shroud for carb heat which destroyed the exhaust stub!

Without knowing the detail of your heat exchanger I assume the cabin air connection end will be closed off and the other end open with legs or brackets to space the shroud off the exhaust pipe so I would expect both ends to be secured immovably to the exhaust.

Thanks Donald, that was my thought too, I will go down tonight and tighten them up and check for any fret ting of the exhaust, fortunately it has been warm lately so the heater vents have all remained firmly closed off.

Trev