How To Replace Transmission Mount

[misfitJason]

I had a real bad vibration in the shifter of my truck that I could tell was coming from the undercarriage of it. Well it turns out I have a wheel bearing going bad but needless to say I also checked my rear transmission mount (the only mount) on my truck. The mount itself is located at the rear of the transmission right next to the collector on your exhaust system on most trucks. (See pictures) The manual states to take a large screw driver or prybar to the mount and see if it flexes away from the frame cross member significantly. If you can pry that thing and it moves a 1/4 inch to a 1/2 inch it needs to be replaced. Really I say if it moves that easily with a screw driver or prybar you might want to remove it.

Now to remove the thing put a floor jack underneath the transmission with a piece or two of wood in between the jack and the trans

floor jack the thing up a couple of inches enought to raise it and support it

Next remove the four bolts that hold the mount in. (It was easier said than done on mine and I had to pb blast and heat the furthers top bolt for two days).

Once removed the mount should slip out from the top. If it doesn't raise the jack a little more but not too much

I had a hell of a time putting the new one in because the welded stud bolts weren't exactly true but i made mine fit

Now bolt on the four bolts and don't forget the exhaust support if your truck has one

If the top bolts won't line up lower your jack down a little

Tighten everything up and on the bottom two if the new part doesn't have lock washers or something like that you may want to use a little loctite

[tmoore78]

Good write up. I did the same thing, but my new mount had the bolts molded off center so had to back out. How was the drive after?

Sent from my SAMSUNG-SGH-I997 using FRF App

[misfitJason]

Alot better but I still had a significant wobble which I have found to be a bad wheel bearing So I would do a write up on that next but it looks like there is already one for that. Also I didn't ad this in there but that part is cheap. It cost me twenty bucks after the exchange because the first one was welded wrong. I pride myself as a decent welded (both my brothers are trade welders and taught me) and I have no idea how these passed inspection. Well scratch that yes I do china standards. Any way there was downtime when I had to ride one of my Harley's 15 miles to exchange the part

[misfitJason]

scratch that upon further inspection it was not a bad wheel bearing but a bad tire. Wooops