| [GMCnet] Fwd: Remove and re-install transmission [message #89749] |
Thu, 24 June 2010 16:36  |
emerystora
Messages: 4442
Registered: January 2004
Karma:
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Senior Member |
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I sent this with an attachment. Since the gmclist will not take attachments I have now removed it and referred to the gmcmhphotos.com site for the picture of the lift structure.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29898&title=transmission-lift&cat=5215
Emery
Begin forwarded message:
> From: Emery Stora <emerystora@mac.com>
> Date: June 24, 2010 3:26:12 PM MDT
> To: gmclist@temp.gmcnet.org
> Cc: Hardie Johnson <hardie.j@gmail.com>
> Subject: Re: [GMCnet] Remove and re-install transmission
>
>
> On Jun 24, 2010, at 7:15 AM, Hardie Johnson wrote:
>>
>> Well, here I am back on line and I need to find out how to do this. Mine slightly backs up and hardly moves forward. JimB says it needs to come out and be replaced by a Manny Trans. Is there a writeup somewhere on how to do this?
>> The trans went out as I was pulling into the driveway here in Raleigh back in 2007. I was pretty down about the coach and hard at work, so it has been parked since. Time to fix it now.
>
> I've done it four times. Two with Manny's help. You don't have to unbolt the axles and you don't have to tilt the final drive out of the way.
>
> You take off the starter motor. You then take out the bolts that hold the torque converter. You fashion a support over the engine and support the rear of the engine with one come-a-long and put a chain around the transmission also hooked to a come-a-long. Tighten the engine chain to support it. Remove the bolts holding the transmission to the engine and the bolts holding the transmission to the final drive & the bolts out of the top of the rear tranny support . Remove the bolts from the bottom of the tranny support on the rear crossmember and then slide the tranny back so that it comes free from the final drive gear. Then lower the transmission. It helps to have someone under to guide it and someone on top to pump the come-a-long, although I have done it alone but you will be going from the top to the bottom several times.
>
> Reinstallation is just the opposite. Do not put the gasket on the transmission that goes between the final drive and the transmission or you will likely damage it when pulling up the transmission (I found this out the hard way!).. Wait until you have the transmission lifted into place and then you will be able to slide that gasket into place and then bolt the tranny to the final drive and to the engine.
>
> There is one bolt at the inside top of the final drive that will be almost impossible to reach. Just leave that bolt out. It probably isn't there when you unbolt the final drive from the transmission. If it is there, I have reached it with a long 3/8" extension and 3/8" drive socket.
>
> The transmission weighs about 190 pounds so make sure that you have it supported well, especially if you are underneath it!
>
> I put my chain fairly far back on the tranny. Either beneath or in back of the drain pan.
>
> I found some notes on my lift so I just made a drawing for you. It is a copy of Manny's with a couple of minor changes.
>
>
>
Emery Stora
77 Kingsley
Santa Fe, NM
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