We're in the process of replacing the clutch in our '65 F100 and when we tilted the engine and transmission back all of the transmission fluid came pouring out as if there were no output seal back there at all. I went ahead and ordered a new output seal, but I've never done this job before.

Is it a simple matter of taking the tail section off, pulling the old seal and replacing with new? Are there any gotchas or special steps I need to take to change it out?

Thanks guys!

 

Depending on the driveshaft yoke type you have it can be a relatively quick and easy job(slip yoke like most cars use) or a bit harder if when the driveshaft is removed the trans yoke/companion flange is still on the trans...Ive never replaced one on this type of trans, but my guess would be its something a puller would be needed for after removing the tailshaft nut inside of the companion flange. In looking at my 65 shop manual it doesnt list torque specs per se by trans model but rather by the nut size and its torque limits.

For a 1.00-20 nut, its torque limits are shown to be 90-125 ft lbs
For a 1.50-18 nut, its torque limits are shown to be 275-350 ft lbs
For a 1.25-18 nut, its torque limits are shown to be 225-275 ft lbs

These are all taken from section 6-17 of the 1965 Ford Truck shop manual pg 6-138
in the specifications section (Part 6-17) at the rear of the manual transmission section

These type of yokes require a special holding fixture in torquing the nut as well as removing it according to the manual. In looking at each transmission blowup that are used in these trucks I only found the Light duty 3.03 Ford unit and the overdrive trans used slip yoke type transmissions which would be the easier ones to replace the rear seal on.
As to your original question about the tail section...usually these seals are relatively easy to pop off from what Ive heard...as far as installing...a bit of trans lube on the rubber lip before installing and tapping it in will take care of that...its like a front hub inner grease seal essentially regarding installing.


- cs65

 

What the he!! is a Tremac 3 speed? I've never heard of any such thing.

If you ordered a seal for a Tremac..whatever it is...it will not work.

There are two possible output shaft seals, as there were two 3 speed manuals.

Ford Type 3.03 3 speed manual all syncromesh.

Borg Warner T-85N 3 speed manual with overdrive.

 

Here are some pictures, I can't remember where exactly I came up with it being a tremec. The tag attached to the xmsn says "RAN G2" and a serial number (picture attached) The only references I could find to a transmission model "RAN" was manufactured by tremec. Looking up the output seal on Autozone's website does list a Tremec 3-speed being available that year ('65), and that's the one I ordered. It's a Timken seal part number 7692S.

 

That trans is out of a 1970 F100 or F250 column shift truck with a 240 6 and a 131"wb...its a 3.03 L/D Ford unit...

The part number I see in the parts catalog is a C4TZ7052A

Its probably been superceded a time or two in which case Bill would have its current p/n if that is indeed the case...You should be able to take this p/n though to a local parts store and they SHOULD be able to cross reference this p/n to one from their stock or suppliers.


- cs65

 

Since this xmsn was intended for a 6 cylinder, should I be concerned that it is now mated to a 352 V8?

 

it will definitely pour fluid out the back unless you have the slip shaft in the back of the trans...or a plug tool...i would change the seal while the driveline is out tho...should just need a seal puller...and if you don't have a seal driver...a 2x4 block will work to knock the new one in...make sure you put some trans fluid on the rubber part of the seal before installing the slip shaft again tho.

 

Thanks for the pointers, I'll let you guys know how it turns out. We should have it out in the next day or two.

 

In case anyone is interested, I found the link that seems to suggest this xmsn was built by tremec:

Ford Manual transmissions factory rebuilt and dyno tested save money! - Drivetrain.com

 

I have changed dozens of seals like this. I simply hook the back of the seal with either a screw driver or a pry bar and then yank out the seal. I proboly install 500 oil seals a year and I rarely use a seal driver and have never used a seal puller in my life.

Simply pry the thng out as carefuly as possible Make sure the new seal is dimensionaly simmilar and then coat the outer surface of the seal lightly with some RTV silicone.

Pound the new seal in making sure not to **** it in the bore. IF it ***** badly pull it out carefuly and re-install till it is in.

There are alot of fancy tools that have been invented over the years that are unneccisary. Seal drivers are an example. One can use sockets or a piece of black iron pipe. They cost nothing and do the same damn thing.

Dont use tranny fluid! Gear oil is what it calls for. If you are experiencing hard shifts in very cold weather use 50W engine oil.

 

D9BZ7052A (replaced C4TZ7052A) .. Extension Housing Seal / Available from Ford.

MSRP: $19.79 // FTE sponsor PARTSGUYED.COM price: $12.95.

If replacing the extension housing seal, the extension housing bushing should also be replaced. The bushing develops burrs, which chew into the seal.

B3TZ7A034B (replaced B3TZ7A034A) .. Extension Housing Bushing / Available from Ford.

MSRP: $16.21 // PARTSGUYED.COM price: $11.68.

The Ford type 3.03 3 speed manual all syncromesh (RAN, RUG and etc) is a Borg Warner unit first offered in 1963.

It was developed from the Borg Warner (non syncro 1st) 3 speed manual used 1948/62, shares some of the same parts.

 

This is how it looks now
Found this old post, but I am in the same boat with my 65
352 engine
tag on transmission is HEG-Y
the D9BZ7052A seal the right one for mine as well?
i go to parts store online and way too many options
i entered the the 7052 number in NAPA cross reference and it pulls up their part number 14978 and when I pull up fitment, it does not list my vehicle.
NPD lists 7052-1 for 3 spd M/T. just want to find local and want to ensure I am getting the right part

 

D9BZ-7052-A (replaced C4TZ-7052-A) .. Output Shaft Seal / Obsolete ~ Available NOS & from auto parts stores.

 

thanks for the response
in my picture is the old seal still there?
rubber boot on new is throwing me off
i cleaned up and whole thing appears solid so trying to avoid messing it up trying to take something off that is not there.
i thank anyone in advance for any insight

 

Seal is present, visible in pic.