Failed Rear Differential Diagnosis - 1969 Ford Highboy
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- čas přidán 8. 03. 2023
- Digging into the rear axle of the '69 Ford Highboy, and inspecting what failed when she let go during the snow wheeling fun.
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Keep things rusty, except your tools! - Auta a dopravní prostředky
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I remember in the late 1970s and 80s some Ford 70s trucks would break an axle and walk the tire and shaft right out onto the road. An interesting sight to see I'll never forget. Nice autopsy on your high boy.
That happened to me in my 76 F100 but the axle didn’t break. The axle flange came free and the whole axle/wheel assembly slid out and bent the axle. Never seen that happen before or since.
Damn c clips
There weren’t any C-clip axles in ford trucks til the 8.8. The 1/2 ton 9” are flange bolted and the 3/4 and 1tons were Dana 60 full floating axles. And even after the Dana 60’s they ran sterling full floaters. Chevy had the 12 bolt in the 1/2 tons with C-clips that would slide out of the clip failed
@@GrizztheForkliftMechanic so how does the wheel take the axle shaft with it I thought that if it's flange bolted it's like the ones in this video
That won't happen on a floating axle, but if your bearing retainers give up they give birth.
Fun, Break, Fix, Repeat♾
Mint👍🏻
You think you got it bad, we had a whole inch of snow overnight here 🇬🇧 🤣🤣
Melted now but it was horrifying for a few hours lol
Great video getrdone love the ole Ford's
Cool, lying in the snow ( crispy ) on a camping pad sure beats lying in the mud on a camping pad 👍
Man that was black ooze. I needed some TLC.
Hey I hit the nail on the head. LOL ..Glad it's just an Axle. Easy fix .Well besides getting the other half out ..LOL .Shouldnt be too hard though. Great Video Bud...
Finally we get to see what managed to break.
Has always, enjoy your videos. Great to see someone who knows a real a lady. Has you and your friends working on saving it. Thank you for sharing please keep sharing your adventures can't wait for your next project.
thanks for taking the time to share
Well I had my money on the spiders taking an unplanned holiday but an axle shaft is not so bad, at least you will be able to keep the Dana 70 for another project. The LH thread wheel studs got me on a dodge phoenix years ago, I was doing all manner of crazy to get em undone till it dawned on me.
It's nice to see a young guy know so much about the good old Ford's. Great job
I’ve been here since day one keep up the FE content!
Thanks for watching!
I loved this video, awesome process, good production quality
I have one of these trucks. Bought it new 55 years ago, Still drive it today, The Dana 60 rear axles in these trucks were cheap junk, I putin a later Dana 60 and then a Dana 70, No more axle troubles.
Thanks for taking us along, always helpful to see what failed, all in all not as bad as it might have been
Going fishing now, ain't no fun trying to catch hold of the stub inside the housing
A proper diagnosis! Good to know the axle isn't complete junk. I do agree swapping the stock Dana 60 back in would better suit the truck in a usability/serviceability sense. Definitely hold onto Dana 70 for a future project, though.
How would you go about removing the other sheared end of the axle shaft?
It was interesting to find out what really happened and now we know You did a great job of diagnosing the problem Doctor 💊 fix me up
Fireman 🔥🔥🔥
Great job in explaining my boy.
us old timers would hit the axle in the center and the rebound would usually pop it out
Thanks for the autopsy!
Stayin tuned!
🤠👍
great job - crawling under the HighBoy and diagnosing in the snow - also pragmatic & very helpful explanations !
I always enjoy your videos. Nice to see you working and showing the problem. You always tell what's wrong and needs fixed. Thank you for sharing. Keep warm see you in the next video.
Hey Brother! I love it when 'school' is in session with you. You are blessed with the knack to get right to the issues and problems of a situation. Thanks and can't wait for the next session!
Lockers still unlock for turns allowing different wheel speeds. The difference in like a Detroit is you have 2 large gears that are splined to each axle that are spring loaded towards a center block in the carrier. The side gears have teeth that engage on the center block and the springs are in between the carrier housing and the gear on the axle. During a turn those gears can disengage and turn freely so long as you are coasting. If you apply power the diff will lock again and you drag a tire. My daily truck has had a Detroit Locker in it for over 10 years and 150000 miles now. They work pretty well, even on the pavement.
A spool on the other hand locks the differential solid and allows no movement between the 2 shafts. Air lockers and e lockers do the same as you have an open carrier until you lock it and create a spooled situation. Those are hard on axle shafts haha.
Best looking trucks ford ever made
I literally just broke my ring gear in my red highboy 2 weeks ago. Glad to see I'm not the only one, keep up the good work!
Good to see you messing around on your trucks! Brings back alot of memories. We did a diff rebuild of my buddies 54 Chevy Panel truck...it was an "Egg Delivery Van"....Good Job👍👍👍
Well presented video. Thank you.
Your recent videos on the highboys really makes me appreciate and understand my 75 all the more....thank you. There's nothing like tire chains all around in the winter, along with the plow on the front and about 500lbs of fieldstone in the back.
Thanks for watching!
Good job young man.
Another Awesome video Austin, more new knowledge to add to the library.
Me watching that diesel oil come out of your diff"put that right back in and send it it'll be mint🤣
13:29 explained differentials better than 95% of "drifters"
Thanks for the information
Keep up the good work brother, love the old Ford trucks 👍🇺🇸🤘🔥
I had that happen with a Ford Cargo truck. Pulled both shafts out got a length of pipe, slipped it in the good end until it made contact, wacked it with a sledge hammer and the broken piece went flying across the shop.
Very clever! 😊👍🏻 It doesn’t snow where l live,( Australia). I can’t imagine working under a truck in those conditions. Good on you!
Great Video. Looks like springtime.
Great video man
see you are over 30K for subs..keep up the great content and style ..Waylon Wire mentioned you while back..stay warm..peace..
Yep, enjoyed every minute
Good to get that done before the spring freeze!
i have a 1960 F103 4x4 i'll have to check it out and get it up on my friends lift
Very nice diagnosis of the rear end you know your ford trucks,
Pretty neatly done, not much mess around at all, considering. I usually clean around the area with some diesel and a dish brush before opening the lock, to make it look nicer if nothing else. Good luck with this job!
Fixing is half of fun nice truck 👍
Great video. I was hoping you were going to share how you would get the broken axle piece out from the centre?
BA, nice catch! From outside it seemed like a ring gear, pinon or planetary gears but, with a little patience the twisted till it failed axle was the real problem. Great video!
I really like your in-depth explanation of how the differential functions. I still find it hard to understand. Thanks for the videos. Greetings from somewhat snowy CT.
Nice work figuring out what’s going on 👍
I use to run army trucks all the time in the woods and when ever I changed an axle shaft I would scribe the axle just an inch or so from the flange with a grinder so that when it broke again it broke on the scribe and you could just remove the cap and reach in and pull out broke shaft and put new on in no time works good and you dont have to pull ring and pinon to remove broken peace .
Hell yeah brother
I totally agree with your approach. Good example, girlfriend has a Tacoma, bad vibration, 150 thousand miles. Had put up on lift found rear drive shaft u joint bad replaced that. Improved it alot. But still there. Noticed carrier bearing loose, had that to be looked at. She lives an hour or so from me. Took it to a local shop, they said there was a problem with front diff. You guessed it they changed it, still had vibration. Went back to my diagnosis and replaced that carrier bearing. I tried to get her to find out what they found to warrant changing out the front diff. Ya know they treated her like a customer that didn't have a clue. So sad, that there are places out there like that.
Good news is you just got a free bale spear
I wondered about the spring pack. Nice to have you explain it.
I put some coil helper springs in my 67 F100. Rode good and cut the axle hop from a mild 390 winding it up. The guy who loaded sand and gravel at the quarry thought I would break in their yard, but it got home with 2800# in it. Steering was kind of light though.
i had to add aftermarket spring perches which were long so i wouldnt get axle wrap, busted alotta ujoints before i did that
Nice ! Do you have a big magnet to get the axle piece out of the spider gear ?
My 1981 K30 has a Dana 70 HD. I guess I can expect the same if I'm too hard on it
This video shows the advantages of floating rear axles. Are the Dana 70 and Dana 60 axle shafts the same?
They have a different number of splines.
Geez, look at that stack of leafs on this old girl
how do you get the smaller broken piece out?
I had that same sh!t happen to me 3 weeks ago on my '81 F250. Apparently, it's hard for the salvage locator to find a 30 spline for a dana 61. Took him 2 weeks and $125.
Thats why i bought an EATON TRUETRAC DIFF. Because it does away with the clutch paks and is a direct replacment on my 9.75 inch ford rearend
A Trutrac would still leave you stranded with a broken axle too lol
@@LSswapGarage1 that wasnt the point. You do away with the clutch paks and thats 1 less thing to fail. And a ford 9.75 is basically bullet proof if u use common sense
@@New_Jax_City They are hardly bullet proof lol. In fact the axle shafts are pretty wimpy down towards the splines.. first hand experience there. More or less a Dana 60 though in design. And the Trutrac is a great diff for people that like how an open differential operates as they never lock and physically can't. Designed for road racing and coming out of corners with one tire unloaded... not so much in the rear of a truck lol. Yes you can lay two strips on the road with one... that doesn't mean much but it's how people all.measure how a LSD works lol
@@LSswapGarage1 listen im actually tryin to talk to ya. So not sure why u keep using lol. Im not making fun of you. And im sure its like everything else some ford 9.75’s were built great. Others maybe not. Mine has been awesome. And i chose that diff because my truck is 2 wheel drive and in the snow where i live the more i spin the tighter that diff grips and both wheels keep turning. I didnt want an air or electric locker. I wanted to drop it in the factory spot. Take out the paks and make it simpler. Also no more need for friction modifier. I can use just straight lucas gear oil.
@@New_Jax_City Lol means laugh out loud... and I am in response to what you are saying. It's still talking not that I care. You like the Trutrac... neat. I live in the land of ice and snow and run lockers... because their natural state turns both rear tires rather than some thing that has to attempt to transfer power once you are already spinning. Is what it is. I don't recommend the Trutrac to anyone
Good video as always….I miss your outro music.
👍👍
Thanks for the info is limited slip the same as positive traction
Positraction is just a GM trade name for a limited slip diff. No different than Ford calling it traclock,Chrysler calling it suregrip, etc.
@@LSswapGarage1 thanks that's what I thought
Stupid question, how do you get the rest of the axle out?
Center section has to come out
I was gonna ask the same stupid question but you beat me to it.
Thanks!
🐧🐧🐧🐧🐧👍 5 Penquins and a thumbs up.
now ya got a nice stake for winching yourself out. swap the axle shaft for a new one, some are 28 spline others are 31. lincon lock the rear and seal er up
👍 👍 👍 👍
Dana 70 axle dia. larger then the original ? I surprised it broke. Looks like twist force not load.
Just a question. What ever happened to the Weasley you got?
Still have it. Planning to make some videos on it this summer.
Those axles snap in the cold easily, tow trucks broke them often in the 70's.
Two questions: First, how the hell did you break an axle shaft on a Dana 70?? Ain't like ya got 900 hp. Second, how do ya get the broken axle stub out?
could weld that but it would likely brake in a different spot...
Would have to cut another axle because break is through the splines. Machine ends, line up in lathe,straighten if needed. Thats just to much work to hack it back together. AL B.
Why does it have so many leaf springs but also coil shocks?
As I mentioned in the video, someone swapped the rear axle, and springs in from a 1 Ton.
Since every Ford FE has a cracked exhaust manifold, have you thought about putting headers on your high boys???
Not sure but may also have exhaust leak.
Every FE motor known to man does.
@@BackyardAlaskan I’ve definitely never owned one that didn’t and I’ve had many. I got 3 now
It sucks that ur axle broke, now y have to pull the cage to get the other part out. u can do-it..
Please advise a shipping address, PO box or whatever. I've been saving some stuff for you!
Clutches must be worn out in rear LSD, otherwise truck would drive even if one axle shaft is broken.
👍👍👋🥖🇫🇷
Open diffs are straight up useless,I hate'em
That oil residue on the diff is compleatly contaminated with metal swarf ,,and your to lazy to clean it off,,,yep it's true what they say about the lack of work ethic in young people.....sad...
As I stated in the video, I’m not wasting a can of brake clean on something that obviously needs clutches. Want to throw insults? Then don’t watch the video.