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Unread 01-08-2006, 08:48 PM   #1
94YJ H.O.
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Location: West Valley City, Utah
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Automatic Transmission Mount Replacement

Ok, well I got tired of watching my transfercase shifter move 1" left and right each time I stepped on the gas, so I decided to replace my transmission mount.

Here's a run down of what you'll need:

Transmission Mount (duh) (I purchased the Anchor brand mount from AutoZone. Only cost $18 for the lifetime warranty and all)

Assorment of deep well sockets (the set I used was between 3/8" and 3/4")

3/8" Ratchet wrench

3/8" Breaker Bar

Floor jack w/ block of wood to support transmission and transfer case

Engine Degreaser

PB Blaster rust solvent

I started by supporting the transmission and transfer case with a floor jack. I placed a block of wood on top to keep from punching a hole in the pan, like so:



Next I removed the two bolts that attach the transmission mount to the crossmember/skid plate. The other bolt with the rubber bushing ended up getting cut off:



Next, there is six bolts that attach the skid plate to frame of the jeep. Mine were in really good condition and I had little trouble getting them off. One was rather stubborn, so I just put my jack handle on the end of my breaker bar and with the added leverage it came free easily:



Here's where I used my grinder to take off the bolt that couldn't be removed the traditional way. After a few wheeling trips the bottom of the bolt had been scraped quite a bit. I had no choice but to cut it off:



More grinding, almost there:



With the skid plate free, it was time to clean off 12 years of dirt, grime, and transmission fluid. Here's what it looked like before hand:



After putting my girlfriend (the picture taker) to work for a good 30 minutes, the skid plate looked much better, pratically new inside and out:



Of course while Jer was getting her hands dirty, I was busy removing the old mount. Here's a picture of the old (on the left) and the new (on the right):



Installation is just the reversal. There's two bolts that hold the mount to the transmission. You will need your ratchet wrench and a preferably a box end wrench to remove and install them. I took this time to clean up the transmission pan and transfer case with the engine degreaser as well. It might not be a bad idea to double check the tightness of the transmission pan bolts either. I did this and found all of them at least 1 to 1.25 turns loose. It should only take about an hour, but because of the cold it took us a little longer. I saved a ton of time by having Jer clean up the skid plate while I was removing and replacing the transmission mount. It really makes things like this easy when you have a girlfriend who's willing to help out (honestly, she volunteered to do it )

Anyway, there's not much to it and I have noticed my transfer case shifter doesn't move nearly as much, only about 1/4" side to side when starting from a complete stop. I don't have any new or noticeable vibrations due to the stiffness of the new mount.

Enjoy!

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[COLOR=SandyBrown] 1994 YJ 4.0 H.O.
3-speed Auto[/COLOR]

My NEW [url="http://www.rigrater.com"]RigRater[/url] Score: 406RRv1.0 with a BOA of 31.60
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Unread 01-09-2006, 11:35 AM   #2
BRad704
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i did this one in the parking lot at work one day, but couldnt get the 2 bolts that hold the mount to the tranny all the way tight... how the heck did you get in there to tighten them up? I think mine have come out again...
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Unread 01-09-2006, 12:33 PM   #3
superjoe
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nice write up

man i dont remember my jeep being that close to the ground. when i did my tranny replacement last time i could nto get a tranny jack to go up high enough to reach the tranny.
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Unread 01-09-2006, 12:45 PM   #4
94YJ H.O.
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Racefan:

I used my box end wrench (9/16\" I believe) on the top part of that bolt to hold it in place, then used a ratchet wrench to tighten the nut down onto the bolt. I then double checked it all with my torque wrench (bought just for this project, only like $12 at harbor freight ). I didn\'t have too much problem getting the wrench in there.

SuperJoe:

Yeah it looks pretty low in that pic, part of it because my driveway is flat where the front axle and oil pan is located, the right where the tranny pan it starts the standard driveway slope towards the street. Plus, look at my Rig Rater score :
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[COLOR=SandyBrown] 1994 YJ 4.0 H.O.
3-speed Auto[/COLOR]

My NEW [url="http://www.rigrater.com"]RigRater[/url] Score: 406RRv1.0 with a BOA of 31.60
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Unread 01-09-2006, 12:51 PM   #5
superjoe
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what do you mean here is mine
My RigRater Score: 652RRv1.0 with a BOA of 27.43
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Unread 01-09-2006, 12:56 PM   #6
toplessjeep
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well at least your tranny mount was in once piece when you removed it
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Unread 01-09-2006, 01:07 PM   #7
94YJ H.O.
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Superjoe:

I saw a few guys\' scores and mine was like a third of that, i guess its not too bad with only 1\" shackle lift

Topless:

Yeah, it was barely together, I didn\'t take a pic but it was almost split in two, and the rubber was all mushy. I think a lot of that came from the tranny fluid.
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[COLOR=SandyBrown] 1994 YJ 4.0 H.O.
3-speed Auto[/COLOR]

My NEW [url="http://www.rigrater.com"]RigRater[/url] Score: 406RRv1.0 with a BOA of 31.60
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Unread 01-10-2006, 11:09 AM   #8
CalicoYJ
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Last edited by CalicoYJ; 01-10-2006 at 01:46 PM..
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Unread 01-10-2006, 01:26 PM   #9
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Last edited by CalicoYJ; 01-10-2006 at 01:46 PM..
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