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Flat Towing - Disco'ing Driveshafts; towing
Topic Started: Sep 20 2009, 12:16 PM (1,272 Views)
yjcanibul
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towed 3B for storage, once again I used uhaul transport
(2200lbs), for day it costs say as buying towbar

so I did ( buy a towbar ) - should get it next week , plan to
use for short hauls or if 3B dies somewhere other than
driveway :rolleyes:


question :

read the great article on 3B page todo w/towing

is it easy to get the shafts off the yokes ?
is there any problem leaving them attached at other end
and just tie them up ?

my 3B manual is stored with it

my wrangler book tells me to mark the shaft/yoke alignment
and remove the straps and then tape the ujoint ends - done !

it also says to use new straps on reassembly ?

any tips/comments appreciated .. thanks in advance !!
57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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oldtime
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Remove the propeller shaft joints (Spicer joints) at the axle input yoke by removing the U bolts.
Be carefull now. Do not knock a trunion cap off from the Cardan cross journal.
Unfastened trunion caps will easily slide off from their journal.
The exposed trunion caps should be wrapped well with duct tape to hold them onto the Cardan cross journals.
Then snugly wire the free end of the propller shaft up to the frame.
Simple as that !
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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dos equis
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you can flat tow without dissconecting shaft just put trans and transfer in neutral
1953 willys cj3b,1998 4.3 chev vortec v6 fuel injected,1965 sm 420 trans,11.5 gm clutch, 538 diffs,11x2 brakes,950x33x15 super swampers on 15x8 rims with 2 inch backspace,saginaw power steering,
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Jeep rescue
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dos equis,Sep 20 2009
09:20 PM
you can flat tow without dissconecting shaft just put trans and transfer in neutral

That's about the worst thing you want to do. Unless you are driving a short distance and at low speed. If you are planning on doing any sustained speed over 45mph you will destroy your drive train. Those components are not designed for high speeds.

Save yourself the headache and learn from those of us that have not removed drive shafts and taken the risk. I personally had my parking brake drum shatter due to high speed (60mph), then had the rear driveshaft beat the hell out of my frame and body.
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Daryl
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Great time to check u-joints and the rest of the drivetrain. Its only four 5/16 nuts and a piece of bailing wire to tie up the prop shaft. An ounce of prevention beats a pound of cure. Just because your brothers cousin towed his Jeep 2 million miles in neutral and never had a problem makes him lucky not right.
Lotsa Jeeps, and a few extra parts
In Bonney Lake, Washington
Always willing to look at a Jeep for you BEFORE you buy it to check it out.
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dos equis
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well i guess it is an opinion thing,i have flat towed many times usually going 200 miles one way to hunt in nm ,towed at 55 mph speeds with no trouble ever i drive the jeep 55 to 60 mph so towing is the same as driving,i would only dissconnect a shaft if i had a bad ujoint or a damaged trans case always have used lockout hubs in the front.these are my personal experiances in 45 years of jeeping and some of my jeeps were new,most were not.
opinions vary.XX
1953 willys cj3b,1998 4.3 chev vortec v6 fuel injected,1965 sm 420 trans,11.5 gm clutch, 538 diffs,11x2 brakes,950x33x15 super swampers on 15x8 rims with 2 inch backspace,saginaw power steering,
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yjcanibul
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thanks for replys all

the d/s disco is the path I will be taking , if something will lock up
it would most likely happen to me :)

you might find this interesting, my hood is in good shape,
towing the 3B on the uhaul I could see the front lip of hood
ripple (bend) at 60mpg between the two w/s blocks ... like
flexing a cookie sheet , if it could sustain such speeds or hit
80mph (gulp) I would recommend going to the 4x hood tie down
clasps and perhaps a weld spot ...


Randy
57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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North Carolina Nick
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It would be great to see a section in the 3B page for just this. I think there are a few of us who would rather buy a tow bar but are too afraid to try it. Hey Derek, Do you think we might be able to add one.

NC Nick
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jeeper50
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ol' skool jeeper jeff
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I used to flat tow (300miles)my '56 CJ5 each deer season to the lease and would take it loose and tape it to the spring, duct tape is your friend. Now I flat tow (45 miles) to the new camp and just slip the shifters into neutral and keep it under 60 mph.
In the land of the blind... the one eyed man is king
Texan at heart, Georgian by paycheck

'53 CJ3B, F134, 12v alternator, lockrights, Hot-Spark electronic module,11"self energizing brakes, Belleview winch, Beachwood summertop, OD color, built to honor all Veterans of this great country


Kayaks- Hobie Revo 13, Hobie Outback 12' both ready for the salt...
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yjcanibul
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the tow'ed can quickly become the tow'er
if I drill 20yr old wrangler bumper for towbar also ...

3B stock drawbar setup handle 3000lbs rolling
on 4 wheels ? am sure exceeding 45mph wont
be a problem



57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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derekredmond
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We do indeed have a page on the website, at http://www.film.queensu.ca/CJ3B/Tech/Towing.html

I will add some of these comments to the page. As you can see, we don't have 100% consensus on what is necessary, but more info is always good.

Derek
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Derek Redmond
Kingston, Canada
1959 CJ-3B
http://CJ3B.info/About.html
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ParadigmCrime
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I flat towed my '54 from california to colorado. Over 1000 miles, mostly on backraods, and small highways. All I did was stick the transmission and transfercase in Neutral. My dad used to tow it 70miles when we would go deer hunting.

It didnt cause any problems, but I kept the speed 55-60, which the jeep is designed to do. Dont let anyone tell you, that you cant tow it above 45, because a good running jeep will do 50/60 just fine. Mine is by no means in great shape either.

I did regularly check the transmission and transfer case to make sure they stayed in neutral. I also watched it like a hawk in my rear view mirror, tooks turns slowly, and well as I said, drove only about 55mph.

I also had the jeep filled with stuff I was bringing back from california too.
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OZ-JEEP
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There are a couple schools of thought on this subject.
The concern with leaving the driveshaft hooked up is that even though the gearboxes are in neutral while towing the spinning rear driveshaft will spin the output assembly of the transfer case.
While the transfer case output shaft is spinning the transfer case gear lube can "fluid couple" and drive the gear set so that the output shaft of the transmission will also spin.

So inside the transmission the output shaft could be spinning by fluid coupling of the gears in the transfer case.

The spinning of the output shaft of the tranny may not provide the same internal lubrication quality to the tranny as compared to when the input shaft spinning with the motor running.Pickup and slinging of the gear lube in the tranny was engineered to be acomplished by the input shaft spinning. The transmission can suffer dammage by running underlubricated in the coupled area such as where the internal shafts join together with the needle bearings.

Even if this phenomenon doesn't occur, it is still less wear on the transfer case components to diconnect the drive shafts (rear shaft only if equipped with front lockouts). So other than short distance towing, some folks disconnect the drive shaft and unlock the front hubs if flat towing for any considerable distance.
Others will put the tranny in gear to stop tranny output shaft rotation and put the transfer case in neutral and flat tow that way.
Trailering is preferred over flat towing when possible.
Oz
O.G. "OZ" Findley
1954 CJ-3B
1970 Jeepster/Commando
Michigan
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oldtime
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Maybe some model 18's have loose shift poppets. Or with the center "pill" removed. That would be a gamble.

I believe short distance flat towing (approx 50 miles ) should be acceptable if all gears are in neutral.

However on 100 mile trips there is little reason not to remove a spinning propeller.
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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yjcanibul
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this thread is not dead yet, upgraded my wrangler to a bad @ss class
III hitch over the weekend more than up to the task of tugging the 3B
around

towbar and remote lights arrived from ebay, will post a few pics once
I get to storage and put it (towbar) on and start hauling 3B

Posted Image

Randy

57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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