Roscoetaggart Posted July 16, 2019 Share Posted July 16, 2019 Hi guys, I am in the process of restoring a 1983 R model mack. I have the chassis completely stripped, we have split the chassis rails and sandblasted everything and we are now in the rebuild phase. My original air tank mounts (there are 4 tanks) were horrible looking bits of angle iron bolted to the outside of the chassis that looked very second rate. I can mount the two smaller tanks inside the chassis rails, but am looking for a way to mount the bottom two larger tanks in a way that looks tidy. Does anyone have any ideas on how to do this? It is a 688rst long wheelbase tipper and air start. Quote Link to comment https://www.bigmacktrucks.com/topic/58159-r-model-mack-air-tank-mounting/ Share on other sites More sharing options...
mrsmackpaul Posted July 17, 2019 Share Posted July 17, 2019 My truck has three inside the rails and on beneath the rear cross member This would appear to be pretty standard layout on Australian Macks Paul Quote Link to comment https://www.bigmacktrucks.com/topic/58159-r-model-mack-air-tank-mounting/#findComment-428111 Share on other sites More sharing options...
JoeH Posted July 19, 2019 Share Posted July 19, 2019 Those angle irons were factory. Truck we just bought has a pretty large tank that uses brackets and straps similar to how the fuel tanks are mounted, plus the two smaller tanks in the frame rails that supply the lift axle. It's a 1988 r690s. Quote Link to comment https://www.bigmacktrucks.com/topic/58159-r-model-mack-air-tank-mounting/#findComment-428283 Share on other sites More sharing options...
Prowrench Posted July 20, 2019 Share Posted July 20, 2019 Personally Ialways go with factory original. The factory original are in fact angle iron that has been contoured around the tank. Quote Link to comment https://www.bigmacktrucks.com/topic/58159-r-model-mack-air-tank-mounting/#findComment-428380 Share on other sites More sharing options...
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