| [GMCnet] Manny's Transmission Lift and hints [message #212667] |
Fri, 28 June 2013 18:39  |
emerystora
Messages: 4442
Registered: January 2004
Karma:
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Senior Member |
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I learned quite a few things from Manny several years ago when at his house installing another transmission into my GMC.
I had posted a drawing of his lift on the gmcmhphotos site back in 2006.
You can see it here
.http://www.gmcmhphotos.com/photos/transmission-lift-structure/p29898-transmission-lift.html
This is a fairly compact lift and can easily be transported and put in place but it is very sturdy when in place
The leg with the threaded pipe fitting goes onto the front ledge of the place where the box cover fits.
The other leg goes onto the flange above the step. A length of 3/4" threader pipe screws into the front threaded coupling and slips through the back pipe coupler. A hole is drilled down into the slip fitting to hold a pin to lock it in place.
Manny's original had threaded pipe couplers on both ends which meant that one had to screw the back support onto the pipe after the two come a longs were in place. I modified it to have a slip on fitting on the rear support with a pin to hold it in place so that it could be assembled easier.
Manny uses one come a long to support the engine and the other one with a chain to lower and raise the transmission. He has a chain made up with S hooks at the proper locations to properly support the transmission so that he can quickly attach the chain to the transmission. I once had a drawing of the chain but I cannot find it. I had loaned out my support to someone a few years back but they "lost" it including the pipe and the chain. I cannot remember who the person was. He lived in Albuquerque at the time but I really didn't know him. Sometimes one shouldn't be so generous to a stranger just because he owns a GMC.
I have to make another one when I again need it.. So I'll have to ask Manny for the dimensions on the chain and hooks again someday so I can make up another chain. With his lift one can do it alone but you have to go up and down several times when lowering or raising the transmission. It is much easier to have one person below and another operating the come a long.
I have found that the hardest part of removal is reaching the top two corner bolts that hold the transmission to the bell housing. When Manny first removed mine at his shop he used a an air powered 3/8" socket wrench which removed them easily. When I did mine at home I had to really work with a hand wrench to get those bolts out.
When putting the transmission back in don't attach the gasket that goes between the final drive and the transmission until the transmission is lifted in place. Then slip the gasket in place. Otherwise you will likely tear the gasket when lifting the transmission.
When attaching the final drive to the transmission I have found it is difficult to line things up. I have found that you can just thread two approx. 6" long bolts through the bottom two holes of the final drive into the tranny. This will serve as "rails" for the tranny and final drive to line up and slide together quite easily.
Don't try to put in the top passenger side bolt when you attach the final drive. It can be done with a 3/8" flex and a long (24") extension but it is better to just leave the bolt out.
Emery Stora
On Jun 28, 2013, at 8:25 AM, John Wright wrote:
> Guys,
> Were missing the point here!
> How does he remove and replace and transmission, that is all! It is not how he builds a tranny or all the great parts that he uses or where he gets them from. Manny is a great resource for the GMC community that does quality work and goes out of his way to help when needed without being asked. People just need to see how it is done by the best! What are the little tricks and tools setups that could be used by the GMC owner that does the work himself?
>
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