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08-31-2021, 12:12 PM | #1 |
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transmission, universal joint ? oiling discussion
as per ford service, that states,
"the universal joint is housed in a globular member, which is filled with lubricant to provide OILING of the moving parts." there is a grease fitting that the lubrication charts say is for the universal joint. the globular housing is fairly large inside if it were to be full of grease it would take almost a full tube. on disassembly of these torque tube housings oil seems to always run out. with the steering box grease is not supposed to be used as it will squish away from the gears which would happen to the universal joint as well, i would guess. the inner housing ball side holes and the end hole where the universal exits are higher than the tranny fill holes, which to me would indicate that that chamber is supposed to be full of oil, not grease ok here is the short of it. why is it suggest that a one sided shielded rear bearing should be used on the main shaft? is the universal supposed to run in oil? or grease? Last edited by old ugly; 08-31-2021 at 02:46 PM. |
08-31-2021, 12:27 PM | #2 |
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Re: transmission, universal joint ? oiling discussion
If original the clamshell is filled with grease, 1 14.5 oz tube. remove speedo drive and pump grease into cavity until it is seen at the drive. Again, 1 14.5 oz tube. Because the rear transmitter bearing is not sealed trans oil will migrate into the clamshell and mix with the grease. Precaution, if too much grease is pumped into the cavity it will just migrate into the trans which isn't a good thing.
If a sealed rear trans bearing is installed then its up to the grease to do all the work. So some guys use a 'sloppy' grease such as Corn Head grease. |
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08-31-2021, 02:45 PM | #3 | |
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Re: transmission, universal joint ? oiling discussion
Quote:
and maybe the inner bearing shield would stop the grease from entering the transmission. makes sense. on that note. i am wondering, what is the advantage of the one sided shielded bearing? ou |
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08-31-2021, 03:53 PM | #4 |
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Re: transmission, universal joint ? oiling discussion
I installed sealing lip bearings in the front and rear of the transmission so that people wouldn't always show where I parked due to oily oil sludge. That's why I also installed the universal cardan casing with much silicone-sealant.
Dry!
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08-31-2021, 05:49 PM | #5 |
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Re: transmission, universal joint ? oiling discussion
I like the John Deere cornhead grease for the universal. The problem with using regular grease is the u joint just whips it to the sides. The cornhead stuff behaves more like oil during a heat cycle and that allows it to stay in place more.
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08-31-2021, 06:32 PM | #6 |
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Re: transmission, universal joint ? oiling discussion
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08-31-2021, 06:41 PM | #7 | |
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Re: transmission, universal joint ? oiling discussion
Quote:
what type of lubricant for the universal do you use in there? ou |
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08-31-2021, 06:53 PM | #8 |
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Re: transmission, universal joint ? oiling discussion
if transmission oil comes in contact with the cornhead grease do they mix together ?
ou |
08-31-2021, 07:38 PM | #9 | |
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Re: transmission, universal joint ? oiling discussion
Quote:
thanks ou |
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08-31-2021, 10:57 PM | #10 |
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Re: transmission, universal joint ? oiling discussion
JD Cornhead grease is a synthetic polyurea type lubricant. The charts show it to be incompatible with the typical petroleum derived grease products so it may not be compatible with the 600W that many folks use in the transmission. But, if you are running straight STP it may be OK.
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09-01-2021, 07:36 AM | #11 |
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Re: transmission, universal joint ? oiling discussion
After restoring the car, who has had a u-joint fail because of the lack of lubrication?
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09-01-2021, 08:43 AM | #12 |
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Re: transmission, universal joint ? oiling discussion
Ford originally called out a lubricant that was gear oil mixed with soda soap. The soda soap is still used in sodium based greases as the binder for the oil to give it lubricity. Mix the oil and grease and a person has a semi-fluid lubricant that doesn't flow as easy as straight gear oil but well enough to lubricate the bushings in the U-joint.
The John Deere corn head gearbox grease was designed to do the same thing for a complex gearbox that would otherwise leak more than they desired. The model A transmission has a baffle for the rear main shaft bearing that does a pretty good job of minimizing oil leakage as long as the transmission isn't overfilled with lubricant. A bit of oil seepage shouldn't affect the U-joint lubricant all that much. Some folks leave the rear seal in the bearing if they purchase the late type SKF bearings during overhaul and that would further slow any tendency toward seepage. Last edited by rotorwrench; 09-02-2021 at 10:54 AM. |
09-01-2021, 11:25 AM | #13 | |
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Re: transmission, universal joint ? oiling discussion
Quote:
question? do folks run straight STP in the transmission? good discussion here thanks all. ou |
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09-01-2021, 01:23 PM | #14 | |
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Re: transmission, universal joint ? oiling discussion
Quote:
I have found that enough transmitter oil gets back into the clamshell to make just the right viscosity goop. As to your question of STP, I've never been a fan even when Studebaker owned it and we had to push the stuff. It really has no lubrication qualities, but, there are some that do use it in the transmitters. |
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09-01-2021, 01:47 PM | #15 | |
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Re: transmission, universal joint ? oiling discussion
Quote:
Addition to # 4: I also sealed the screw connection on the speedometer drive with plenty of silicone sealant.
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09-01-2021, 10:55 PM | #16 |
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Re: transmission, universal joint ? oiling discussion
By the description of the cornhead grease, could you put this into the steering box to reduce leakage?
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09-02-2021, 03:23 AM | #17 |
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Re: transmission, universal joint ? oiling discussion
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