com:Better late than never, I worked on Fiat 615 tandems in Western Australia. They were built by AG Parts in Bassendean, Perth. W.A. The clutches were hydraulically operated and synchronized by a flow control valve. In the cool of the morning, the driver had to adjust the valve, as the day heated up he would have to readjust the valve. The farmer was clearing Mallee bush, he had a ship's anchor chain attached to the Fiat and like a skipping rope to a large Caterpillar crawler, They would set off at full belt the Fiat charging through the bush, countless times with all wheels off the ground.
- Tractor & Machinery