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A Christmas Story

Awesome videos' Jay this Auto is very similar to a B/W 35/40/51 in Australia Borg Warner Trans specially the servos FMX is similar as well

Not foul language, it's colorful language! It helps to reduce stress.

Fingers crossed for Part 2. :)

Great video.... I learned a few things thanks.

Is that bolt together TC factory? Please forgive my ignorance. Thank you.

I wonder if the output shaft being not supported may be the governor sealing rings are not sealing as they should and there is not enough pressure to shift the 2-3 shift valve. I had that happen one time that a C4 transmission would 1-2 shift but not 2-3 shift. Replaced the sealing rings on the output shaft and it fixed the problem.

The great video I appreciate all the information I can get on a c4 cuz I am working with two right now and the only way I can try them is put them in the car and take them out and put the them in the car. But I am making progress and learning

Great video, Jay. Thanks for sharing !

I'm betting the modulator valve was the first problem. Years ago I had manual shift kitted ford valve body that never had the vaccum modulator connected. So I decided to remove the modulator valve. It delayed the shifts by a bit and shoften the 2-3 shift. I put it back in. It obviously still has some effect of blocking/or allow fluid to certain circuits.

Very interesting. Surprising how long converter pressure takes

.. no joke, they gotta Pay You, tho .. 😏🧰👨‍🔧💰

Another good reason why silicone sealer or RTV has no place in any transmission. If the gasket doesn't hold then RTV is not the answer!

Most people don't realize just how good these old transmissions were. With a few little lube and shift timing tricks the FMX would stand up to anything a 400 or 727 would. I ran one in M/P class behind a 428 in a 67 Fairlane and never hurt it. 3200 lbs and ran 10.60's. Not fast by today's standards but it was damn fast back in the mid 70's.

Bookmarking these vids for when i tackle the Cruusematic in my 64 Galaxie. Thanks man great series on these old dinosaurs.

I have a Ford van with a 4r75e. The van has 99,756 miles on it. I'm second owner. The tail shaft housing busing wore through damaging the housing and driveshaft yoke. The transmission operates fine except for the roar of the damaged tail shaft housing. Fluid condition is bright red and not burnt. could have had a fluid flush and fill. Should I suspect more internal damage to the tail shaft or transmission? The original owner was Fritolay. They used it to service vending routes. I doubt it was over loaded. It is a base model so no tow package. I'm beating my head over this as it's a first for me. Usually Ford transmission grenade on me and need a complete rebuild with hard parts or operate perfectly.

That is exactly why that safety spring is in there which was told to us at Ford tech school. However, since the later Ford TV cables have a return spring around the cable at the tranny linkage side, if the cable falls out of the throttle body, the cable return spring will overcome the internal safety spring causing it to go to the idle zero pressure position anyway. I think there was an added reason for the internal spring. The spring pushing against the back of the TV valve in the valve body is very strong. The linkage safety spring counter acts that strong TV valve spring and the TV cable return spring making easier to push the throttle pedal for driver comfort. Anyone who leaves off the safety spring will notice how much harder it is the push the gas pedal.

Hi Jay, I wonder if slotting the screw hole in the spring roller detent allowing it to be adjusted forward and back, could work as well? I think so but my concern would be if someone else later worked on the unit not knowing and removed it for cleaning or whatever and put it back in wrong, oops, that would not be good. Bending the internal link like you did, probably is better since it won't change if removed.

Can this cause the car to stay. In reverse (as in wheels move in reverse) regardless if its in drive, reverse, L1 or L2? Mine is doing that after replacing the shifter shaft seals which required dropping valve body.

I've had two FMX that have the rollers in the rear servo lever, both 69 or 70 models

At 10:06 into video, when installing the spring/ball assy. under the shift quadrant selector? I learned this trick 40 years ago from a dear mentor. 1) JT-6/Vaseline is your best friend use it liberally on the spring and ball.... 2) Use the concave end of an old pushrod to hold the spring/ball compressed. 3) While holding the spring/ball compressed, rotate the shift quadrant allowing it to push the rod off the ball, and engaging the ball. And you are done... simple huh?

What's this "Assembly Lube" you speak of? Our supplier only sells a product they call "Boy Butter"...Great Vids, Thanks Jay!

I started following you on your C-4 tips and rebuilds. Since I have a 56 292 sedan that I got running but do not know if the trans is ok I might be looking at a potential rebuild. These trans look simple enough for me to rebuild except for all of the external tubes. You have explained them in detail. I know it is difficult to record while actually working but I like how you break away to do 2 handed or boring jobs. I think most of us understand. Great videos and I hope you do a video on disassembly, inspection and rebuild of an air-cooled torque converter.

👏👏👏👏

Now we need a series like this on the c4! Keep up the great work Jay!

Thanks Jay. Very interesting stuff. Automatic transmissions were always a mystery and no one wanted to work on them in our shop.

Thank you for sharing your extensive knowledge on these old ford units. Very hard to find someone with the patience to even talk about much less show you anything on these! You're awesome dude!

Good instructional Vid Jay!!!

Thanks for the great explanation. I watched it all the way to the end. 😊

Amen to B.G.1's Comment ! Us old guys gotta try to keep these old cars running. The new cars are scrap from the assembly line.

I ordered what must be a small for 66 rambler. Bw12 was the number on my larger cast case. Fatsco set me up with the right stuff after everyone else repeatedly sent me the wrong stuff

.. impact driver can help tighten those flatheads for you .. ⚒️🪛🧰👨‍🔧

Great to watch these videos! But Jay it’s time for you to get a Manfrotto Tripod stand. Also shut off music in background you risking the videos getting deleted by CZcams. 😂

Thank you, thank you for showing what can happen on assembly. I am an old guy and appreciate how you share in detail you're thinking as you go along. Also, no goofy soundtracks that so many other youtubers think you need. Looking forward to your continuation on this rebuild

Thank you for the video Jay. 👏👏👏👏

Jay, The problem with the people who made that converter don't take pride in their work. Your parents must have raised you right, because you do! That was a very interesting video, which you explained perfect. Thank You!

Was there anything actually wrong with this transmission? Or maybe you had no idea at the start?

Note to self: DON'T EVER DO THIS YOURSELF! Haha Hey man I would pay uou double your normal price just to avoid doing this myself! 😂

I think that guy had a roller on the shift linkage too!😂

Hi Jay, this is Ken from BadShoe Productions. I had a customer who got my C4 repair video and had a problem understanding the relation between the #1 and #2 washer setup which I detailed in my video. However, he found your video here. You approach it from a different angle. He let me know that he fully gets it now watching your video. Therefore, I want you thank you for helping my customer out. I'm checking out all your videos which are super good especially on the C4 stuff, thanks again Jay.

None of the Dynamic valve bodies use those mods either.

This is a great video working on old Ford transmissions. Not much info out there. I am reviving a 56 sedan with air cooled converter. The transmission worked fine when parked. Looking forward to your part inspection/assessment and assembly. Thx

Jay better you than me lol, I did a roto-hydramatic slim jim that had 2 torque converters, one inside it...what a shit show...we took it back out and apart...everything was perfect....it feels like one giant slip....lol

I'm glad you got to put it together because I wouldn't know what I was doing it not a c4 and I have a question about c4 valve bodies I know this is a different videos but the tabs that come with the valve bodies do they need anything I have a black a green and a red little table on the three valve bodies that I have

Hole in the story , What was the symptoms ? What failed ?

Thank You for doing this series. There are still a lot of us left that love these ole Fords. I still have a garage full of these old cast iron monsters. I remember a problem with the center support cracking on the main case ? So I started to stockpile T-bird and Galaxie units. If you ever decide to start rebuilding these again. I would be interested , and if you need any parts , I have em ! LOL Take Care Buddy !

You missed dinner. You're going to be in trouble when you get home.

This is cool. My Dad had to do this to a 57 Ford Fairlane 500 in like 58 or so. I remember going to a Ford dealer for the parts. Had a pretty 58 T bird on the showroom floor.

thanks Jay

Great video Jay. Would you say at around 4000rpm, the system is making as much pressure as it can? Moving the RPM up to 7000rpm wont see any more pressure than at 4000rpm?