Air shocks for Landcruiser 79 series Ute

My old man put air bags on leaf springs in Perth (from ARB) when he got back to Darwin he wasn't happy with them, He was told they would help with the load EG caravan. He rang the manufacturer and was told they weren't load bearing devices he was also told to take them off and return them for full refund . He did this and for half the price had the springs reset and put a helper spring in the pack he had no more problems.

steve&anja,
Did he have the black bellows or the red bag inside it's own coil? and were they a polyair product?

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The red bags in there own coil do not work well on leaf springs, in coil sprung vehicles they are great! with leafs the only way to go is the black bellow type.
For constant heavy loads extra leafs are ok but it must be a pig with no load in it.

My experience with leaf springs includes 75 and 78 series troopies over 13 years the same guy has reset my springs over this time and its always worked in that time I have drive conservitly 750.000 km + . He also told me the coil air bags I had in my 80 series were not load bearing and not to use them as such, He has serviced the 7 Toyota's Ive used in the last 13 years and next month when I buy my next Toyota the fist place I will take it is his work shop.
The question is you base your opinion on what
ps the troopy is for work I have 2 soon to be 3 GXL's to for the softer ride .

The air bags in a 80 series are load bearing, sure they are not intended to lift a vehicle but are there to maintain original height under load.
As i said for constant heavy loads put extra leafs in no problem, but some people don't always have a heavy load.

My interpretation of load bearing is putting a load on then pump up to original hight so I agree with you on maintaining original hight . But if your carrying a few tins of paint a ladder or 2 and a few tools you don't need to spend heaps on stuff you don't need.