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during our last vacation I often saw huge motorhome towing a car or small trucks. I also saw the hitches for that in several stores.
What I wondering is how does it work? I was told that you'll have some damage to your automatic tranny if you tow the car more than about 30 miles. I cannot imagine that all towed cars are having a manual tranny so...is there a special clutch available which is disconnecting the tranny to the axle?
Neutral still won't save the trans. What they have is an add on electric pump that keeps the trans pressure up to be like the car was coasting in neutral...
Some cars have a transmission disconnect. Basically hit the button and its like the transmission isn't there. You can also buy aftermarket setup. Look on a few rv websites it could explain it better.
How does coasting with the automatic in neutral cause any damage?
Because the back half of the transmission turns when the wheels turn. Since the engine is not running the trans pump isn't running, so these parts are turning with no lubrication. Rotating parts that run without lubrication don't last very long.
Remco Inc., makes halfshaft disconnects for front wheel drive vehicles and also lube pumps so that these parts don't run without oil. I don't know how well either of these work.
My parents have a motor home and tow a car behind it, believe it or not, there are many cars out there that are built for "4 down towing" There is something different about the transmission set up.
I am not sure of the specifics of it, but it is very common knowledge in the Motor Home groupies on which cars can and which can't. My parents used to tow a cavalier, but bought a new Jeep Cherokee, they only looked at cars that were built for "4 down towing"
I tow my suzuki samurai behind my truck and camper, first time I towed it I thought I was being smart and puting the transmision (5 spd) and transfer case in neutral, after closer examination I found that with the transfer case in neutral it actually engaged the front drive shaft (oops!) read my manual and specifically tells you to put the tranfer case in 2wd high range and the trans in neutral when towing the vehicle.
I have put a ton of miles on this way now and no problems yet, I just make sure my diff. fluid is always toped up and my rear drive shaft u-joints are lubed and in good shape.
The dolly idea works well plus it gives you some braking help if equiped with brakes, thats my biggest problem I wish I had some kind of braking on the tow vehicle but those system are so exspensive, I am still legal towing with no brakes (2800lbs or less than 1/2 your gvwr ) thats the limit up here ...
Regards, Domenico.......
My friend recently dolly towed an 84 Trans Am home, and against his better judgement and his friends telling him it would be okay, he just put the AT tranny in neutral and left the shaft in. He got about 50 miles before the tranny locked up, and he had to try and remove the shaft at night on the side of the highway. He was a little angry.
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