Generally
Newly manufactured cabtub in original design, 2 cabtubs are required for 1 car. Note! read the text below about crooked, bent and damaged cab tubes.
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Cabtub in original design
3 315 kr
Tip!
Change both cab tubes at the same time, if you change only one, one moves easier than the other and the cab position goes crooked.
Here's how to get the air out of the system: Install the cab tubes, hoses and cab pump. Remove the level plug that is on the pump, push a hose that fits exactly into the hole. Make sure there is a tight fit between the hose and the hole. Put the hose in a can of automatic transmission oil. Drive the cab up and down, making sure there is always oil in the can. Now the cab pump sucks in the oil it needs and pushes out the air that bubbles up in the can. The oil foams a lot and mixes with air, now wait until the oil is clear and nice it may take a couple of hours. Then you run the cab up and down again, repeat this until the oil is clear and fine without air mixing. It can take a long time, but if you can wait between the cab up and down runs, it's easier and you'll get a good result. When everything seems OK, wait a while and suck up oil so that the level is a couple of cm below the hole, put the level plug back on the pump, which now has the correct level of oil. Note! only run the pump up and down max. 2 times then it has to rest for a while. It's easy to drive too much and burn the cab pump's electric motor. So take it easy and don't stress about this and it will be great.
Crooked, bent and damaged cab tubes
Please note that very little play is needed in the bushings of the cab stand, or small damages in the cab stand, so that the tube does not run perfectly. There could also be damage to the fixings, which means that the cab tube does not run quite straight. If the load is not completely straight when the piston pin is pushed out by the oil, the pressure on the rod will be skewed. What then happens is that the piston rod or cab tube tube becomes bent. There is absolutely no warranty on cabtubes that get damaged like that. The manufacturer points this out very clearly, and they are right about this. The tubes are very long in 1954-56 and the problem increases the longer the tube gets, so you can say that the construction Cadillac did on these particular year models was not optimal for a worn or damaged cab stand like this 60 years later. But it is, and we can't ask Cadillac to reverse the tape and do the design differently. But they probably realized the problem and shortened the length of all cab pistons on later model years. So once again, be careful and don't bend the cab tubes, because there won't be any new ones under warranty.
