Ford 9 inch Service and Oil Change; I'm Not As Tough as I Once Was... Bad Hombre Garage Episode 90
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- Опубліковано 5 вер 2024
- In this episode I tackle one more thing on the list: Change the old, nasty oil (gear lube) on the Ford 9 inch differential/rear end under my 1929 Ford Model A. It's a pretty basic demo of how to pull one of these hot rod rear ends apart for service. I also share the highly technical thought process that goes into selecting the correct oil for a rear end differential.
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Email: badhombregarage@gmail.com
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wish I could have see you put the axles in
Ah, bummer. Sorry I didn’t include that. I will on the next one I do with a Ford 9”. Thanks for watching!
😮 my goodness
Thanks.?
I recognize the spray paint on the floor. I used it to help square the axles to the frame. Great job, the car looks great and a lot of fun
Thanks! Yep, I’m glad I did that technique for squaring the car up, it goes down the road straight.
Nice vid Joe, good work changing the oil and stuff
Thanks Izzy.
To avoid having to do such a full dismantle, with all the chances of damaging something, I welded a 1/4 NPT drain plug into the diff case while I had it apart
Man, you know what’s frustrating? I have one of those sitting on my shelf! Ahhh. Opportunity lost.
You convinced me, I subscribed!!!
Right on, I’ve subscribed to your channel too.
@@BadHombreGarage Thank you and welcome aboard!!
How did you clean the inside of the rear end of all the sludge? Any sludge in the tube from the wheel to the differential gears,
I just sprayed it down with brake cleaner and wiped out the inside really well. I blew it out with the air hose as the final step.
Lot of work to service a 9 inch , but well worth the effort...getting harder to find them and keeping them together very important .
Shawn
Thanks, it’s one of those dirty jobs I hope I don’t have to do again soon!
hahaha, that pumpkin scene was a horror movie. It's not that we were tougher when we were young, we were just fearless. I remember lying under a car with a gearbox on my chest as I installed it, lol.
Maybe that’s it, we are just more wise now. And, yep- I’ve done the old “transmission bench press.”
😂thanks for the ford content. I’m wanting to change my fluid. I have a 9” Rearend on my rescued project car and it has 30 plus years of deferred maintenance and sketchy repairs. Must the axles be removed completely? I thought one could pull each out far enough to get the 3rd member out. Is it harmful to the axles remain in the housing while the oil is drain?
You can just slip the axles out a little way, but I don’t recommend it because the axle will lay on the oil seal and possibly damage it. Once you are that far, it’s really nothing to just slide the axles all the way out.
I cant have any shop in my area to change it. Pisses me off.
Man that’s a bummer. It’s not too difficult, you can do it!
HAHA! Me too. Getting to old to be wrestling these things around. So now with my current and probably last project, I'm welding a bung and plug in the bottom. And I'm using brass plugs so I don't wear out the threads in the bung.
That’s a great idea, I should’ve done that while I had this apart. Never say it’s your last project!
Normally you have to remove all the 10 nuts and especially the 10 copper washers. When the third member is reinstalled. Install a new gasket with new copper washers. Torque the ten nuts to correct specifications.
Yep! I usually miss one of the nuts and fight it for a while before I realize my mistake!
It's funny how you go to do something that you done lots when you were In your 20s and think how did I do that so easy back then because man that was not easy any more
No kidding! I’d like to think it’s because we are more wise.
I have a 9" 3.70 with the never-to-be-sufficiently-damned lack of a drain plug on my '68 F100. Dropping the drive shaft and breaking the diff case just to change oil is beyond stupid! I have a 200cc plastic syringe that I attached thin plastic tubing to. I use that to suck as much of the old gear oil out as I can and use the same setup to add more. No, it doesn't get it all out, but every time you do it you refresh the oil and eventually - after a few changes - you get most of it. Obviously, I replace it with modern synthetic.
That’s a great idea! I think I’ll keep that in mind for future changes, though it won’t be very often. I’m glad I broke completely into this one though, I don’t know the history of this one and I wanted to confirm the gear ratio, clean it all out really good, and check to see if there is very much wear.
At least your pumpkin wasn't full of water like I've seen on a few car revival channels, lol. By the way, my dad used to have a '29 when he was in his twenties. Wish I could've seen it.
No kidding!
Have you ever worked on a closed rear end and torque tube like I have on the 53
No, I never have.
I have a 9" rear end in my'28 Ford 2-dr sedan...a '79 Ford 351w engine and a c-4 trans. My question is what weight oil would you recommend for the rear end and synthetic or no? Thanks.
Sorry it took me so long to get back to you-- I'd probably go with 85w-90 or a similar oil. Synthetic is good, but it'll find any leaks and you'll see it on your driveway.
I have a 75 Ford e150 with a 351w engine and a C-4 trans also. The book calls for 80-90 for the Rear oil. Just my 2 cents.
What angle did you use when you put the 9 inch in your car.? Also what was the angle of the transmission I'm finally getting to that point with my Model A Thanks.
I ended up putting the pinion at a 1-2 degree angle up, in order to match and be parallel to the angle of the transmission, which is 1-2 degrees down. As long as you end up with the u-joints rotating parallel to each other you’ll minimize vibrations.
@@BadHombreGarage Thanks for your reply. I had to call the guys at Pete and Jakes about some parts that I had ordered from them and I asked them the same question. They said that since I 'm gonna be using a sbf/ c-6 that the rear diff should be at zero no up angle because the sbf intake has a downward slant which when you put the angle finder to make it level it makes the angle of the trans work out o.k.
Nice work Joe, I knew you would get it back together, wow that’s a job
All part of the fun, right?