transmission question????
Postmaster
Joined: Sep 2003
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From: Southern California
The only reason automatic transmissions should not be towed is because the gears are turning when the pump is not. The fluid remains stagnant and gets heated up, destroying the gears and clutches.
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Elder User
Joined: Aug 2005
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It is in line with your thoughts about lubricarion but I heard that the rear shaft bearing can run dry and be destroyed if the pump is not running. That is why the manufacturers say it is ok to tow the vehicle up to 20 miles or so without disconnecting the shaft. I was concerned about the other innards. Your answer seems correct.
Thank You
Ken
Thank You
Ken
Post Fiend
Joined: Apr 2005
Posts: 5,720
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From: Washington state
wondered why i had never seen an Aero towed behind a big diesel motorhome
talking about towing rigs, a close friend owns and drives logging trucks, big Peterbuilt with CAT diesel, tows his diesel Ford TPS to NW Wa first of workweek for drivearound rig, one Monday morning pulled out at 3 AM to head north, got about 50 miles and noticed sparks behind him, had forgot to put the TPS in neutral, dragged that big beautiful Ford until the tires and fancy rims wore off.
now CAT's have torque.
talking about towing rigs, a close friend owns and drives logging trucks, big Peterbuilt with CAT diesel, tows his diesel Ford TPS to NW Wa first of workweek for drivearound rig, one Monday morning pulled out at 3 AM to head north, got about 50 miles and noticed sparks behind him, had forgot to put the TPS in neutral, dragged that big beautiful Ford until the tires and fancy rims wore off.
now CAT's have torque.
Last edited by 96_4wdr; Nov 17, 2005 at 08:42 AM.
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Elder User
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Diesel torque is wonderful to have under your foot. My drivers used to prefer diesel trucks with half the hp of gasburners and it is just because diesel power is always there, no gear shifting, just power right here right now. Just like a harley.
Ken
Ken
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Postmaster
Joined: Sep 2003
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From: Southern California
Originally Posted by ken1mod
It is in line with your thoughts about lubricarion but I heard that the rear shaft bearing can run dry and be destroyed if the pump is not running. That is why the manufacturers say it is ok to tow the vehicle up to 20 miles or so without disconnecting the shaft. I was concerned about the other innards. Your answer seems correct.
Thank You
Ken
Thank You
Ken
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Elder User
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You may remember that until about 1965 automatics had both a front and rear pump and could be started by pushing them at about 25 mph. I guess you could tow them indefinitely but i don't remember that well. I think the bean counters got a hold on them to make the trans cheaper.
ken
ken
Postmaster
Joined: Sep 2003
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From: Southern California
Originally Posted by ken1mod
You may remember that until about 1965 automatics had both a front and rear pump and could be started by pushing them at about 25 mph. I guess you could tow them indefinitely but i don't remember that well. I think the bean counters got a hold on them to make the trans cheaper.
ken
ken
I don't remember that, I was too young at the time
Mind you, I'm still a young man, just in an old man's body now
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Elder User
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Remember, Posting Gurus are older than Senior Users, wise guy. My first car was a '61 T-Bird, my brother pushed me to start that Police interceptor 390 several times. Push to 25 mph in neutral, drop into drive listen to the sound of 8 cylinders dancing to the tune of 16 valves. It had a generator and would start with a stone dead battery, can't do that with an alternator, it needs battery juice for the field.
Ken
Ken
Ken
Ken
Freshman User
Joined: Feb 2003
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Originally Posted by ken1mod
Gentlemen,
Does it hurt an automatic transmission to coast in neutral (engine idling)??
Ken
Does it hurt an automatic transmission to coast in neutral (engine idling)??
Ken
Jan Richter
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Joined: Sep 2003
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From: SoCal
Originally Posted by ken1mod
You may remember that until about 1965 automatics had both a front and rear pump and could be started by pushing them at about 25 mph. I guess you could tow them indefinitely but i don't remember that well. I think the bean counters got a hold on them to make the trans cheaper.
ken
ken