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03-17-2019, 08:46 PM | #1 |
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How much grease in the clamshell?
Lubing the chassis, the clamshell is the concern. Everything else grease squeezes out somewhere when full. I think the clamshell does the same, but something tell me it squeezes into the transmission through the rear bearing. Is there a way to decide how much grease to pump in there?
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03-17-2019, 10:19 PM | #2 |
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Re: How much grease in the clamshell?
Remove speedometer drive gear and fill clam shell until it comes out there.
Replace speedometer drive gear and wipe off the mess |
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03-17-2019, 11:37 PM | #3 |
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Re: How much grease in the clamshell?
Thanks Richard!
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03-18-2019, 12:36 AM | #4 |
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Re: How much grease in the clamshell?
I do the same as Richard.
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03-18-2019, 01:30 AM | #5 |
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Re: How much grease in the clamshell?
I was going to say the same..
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03-18-2019, 06:03 AM | #6 |
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Re: How much grease in the clamshell?
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Be careful with the nuts on speedo drive. If they haven’t been loosened in a long time, use a lot of penetrating oil. They can break. Enjoy. |
03-18-2019, 07:17 AM | #7 |
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Re: How much grease in the clamshell?
Hello, what is "clamshell" please? Which is called like the "Universal Joint" in the Lubrication Chart?
Thanks in advance!
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03-18-2019, 08:09 AM | #8 |
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Re: How much grease in the clamshell?
If you have a Mitchell overdrive as I do then how do you check for grease in the universal. The Speedo connection is in the overdrive box.
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03-18-2019, 08:26 AM | #9 |
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Re: How much grease in the clamshell?
wmws, good question, that would be relevant for me too! I hadn’t considered that and Richard should know because he helped me put the Mitchell in my car.
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03-18-2019, 09:05 AM | #10 |
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Re: How much grease in the clamshell?
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03-18-2019, 10:20 AM | #11 |
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Re: How much grease in the clamshell?
The clam shell are the two pieces that bolt on and clamp the driveshaft to the back of the transmission.
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03-18-2019, 10:47 AM | #12 |
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Re: How much grease in the clamshell?
The 2 pieces on the right:
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03-18-2019, 11:10 AM | #13 |
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Re: How much grease in the clamshell?
Yes, I answered for stock setup only. Maybe someone could call Mitchell and see if they have an answer to that. It looks like a hole with a plug in the torque tube directly under and behind the "bell" enclosing the universal joint would do it.
Look at 31 Woodie's avitar closely. Ever seen wood wheels on a Model A woodie before? I think we hand packed the universal cavity before installing your overdrive. Better check it :-) |
03-18-2019, 01:27 PM | #14 | |
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Re: How much grease in the clamshell?
Thank you for that informations. Now I know, what was meant. I checked that immediately. Very well too the hint from WHN ...
Quote:
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03-18-2019, 02:01 PM | #15 |
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Re: How much grease in the clamshell?
I have NO PROBLEM, sold both cars---LOL------ How much grease is required to help a CLAM open?
Bill Walking
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03-18-2019, 10:04 PM | #16 |
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Re: How much grease in the clamshell?
Richard, I pumped quite a bit in it on Saturday before thinking—hey, where is all this going and could that be a potential problem? I decided to stop pumping grease in and ask the question. I think I pumped in quite a bit, but not overly concerned by how much. I did do a test drive and shifted the three speed, but didn’t think to try the Mitchell. Given the Mitchell has gear oil I would guess it has a seal in the front input and rear output.
When we put the Mitchell in we did hand pack the u-joint, but I was sure there were voids and wasn’t aware there was a zerk fitting there to fill it up, or this question would have come up sooner. I will try and call Mitchell. I will report back if/when I get an answer. Thanks everyone!
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03-18-2019, 10:18 PM | #17 |
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Re: How much grease in the clamshell?
I don't if this is an old wifes tale or not, was told this at one of our Model A meetings.. Someone told me a fellow kept pumping grease after grease in his universal. Couldn't figure where it was going, decided enough was enough, got into his car for a spin. Grease was oozing out of his speedometer, what can I say. Is it true or not don't know but makes for a good story.
Gerry Birch Bay WA |
03-28-2019, 05:15 PM | #18 |
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Re: How much grease in the clamshell?
I contacted Mitchell today, sorry for the delay in doing so. Anyway, they do not have a precise answer on this. Here is their reply:
That is a very good question. Not one with a firm answer sorry to say. A reasonable amount. You are correct too much and it could either go into the transmission or push by the bearing and head down the tube. I would say give it about the same amount of grease you did prior to installing the overdrive. Wish I could be more helpful.
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03-28-2019, 07:41 PM | #19 |
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Re: How much grease in the clamshell?
It has not been mentioned, but grease is only REQUIRED on the early "ring" type universal joint.
The later "cross & yoke" style popularized by Dana/Spicer are made with sealed needle bearings - which are pre-lubricated. Some of the crosses DO include a grease zerk which is a one-time fill until you see it squirt from the needle seals, but no more - much like any zerk lubricated bearing. In many modern cars and trucks these universals are fully exposed to the weather and soldier on in their function for a good 100K miles. One wonders how long they would last in an enclosed space such as the universal clamshell? I usually put only enough grease into the clamshell to "coat" the yokes/cross to prevent rust and allow the clamshell free movement. Also the splines need a dab of grease on assembly as there is the possibility of a sliding fit here. If you own the earlier "ring" type universal - more is better - up to a point where the universal slings it off. I might give that one a cup or so of grease. Joe K
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03-29-2019, 09:19 AM | #20 | |
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Re: How much grease in the clamshell?
Quote:
Not knowing enough to know exactly what you said in the post, could someone post labeled pictures of the assembly as viewed from under the car? |
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