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Front motor mount assembly, slots up or down? 48-3609
#1284298 Sun Oct 21 2018 03:26 AM
Joined: Sep 2018
Posts: 86
W
Shop Shark
I read about putting slots up, but not in Gm manual i can find??? Heres mine coming out of holder, slots down..... i believe its original from factory as this thing was parked in 1977 and barn stored since. So do i put slots down or up tomorrow?
https://postimg.cc/gallery/2y4dwtrk6/

Heres whats left of the rear mounts.
https://postimg.cc/gallery/1zeu31zgm/

Re: Front motor mount assembly, slots up or down? 48-3609
wrenchguy #1284400 Mon Oct 22 2018 12:08 AM
Joined: Jun 2012
Posts: 1,729
S
Shop Shark
Fig 20 in the manual, shows the "slots" up. The cross section is not too tough to see. Thanks to the Old Online Chevy Manual Project.


Steve H
Re: Front motor mount assembly, slots up or down? 48-3609
wrenchguy #1284471 Mon Oct 22 2018 02:16 PM
Joined: Sep 2018
Posts: 86
W
Shop Shark
I noted that some time ago, with all the details in that illustration, slots weren't indicated with arrows or text like everything else was. I don't think it makes a difference so i put my slots down. Thanks 4 bring it up.

Re: Front motor mount assembly, slots up or down? 48-3609
wrenchguy #1284477 Mon Oct 22 2018 02:50 PM
Joined: Mar 2014
Posts: 1,713
J
Shop Shark
Years ago I removed one I know had never been changed (this being around 1975 or so) and the slots were facing down. I made myself a note of it since it differed from the shop manual and that's how I've done it since. Just be certain to use the right washers on the bottom side since larger ones can stop all movement and you don't want that.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: Front motor mount assembly, slots up or down? 48-3609
Jon G #1284495 Mon Oct 22 2018 04:45 PM
Joined: Sep 2018
Posts: 86
W
Shop Shark
Originally Posted by Jon G
Years ago I removed one I know had never been changed (this being around 1975 or so) and the slots were facing down. I made myself a note of it since it differed from the shop manual and that's how I've done it since. Just be certain to use the right washers on the bottom side since larger ones can stop all movement and you don't want that.


Right!, i changed my originals with new, they are sae's and mine were badly battered, hammered and been through the wringer!
Must be alot of forces in action down there.

Re: Front motor mount assembly, slots up or down? 48-3609
wrenchguy #1284924 Fri Oct 26 2018 12:46 PM
Joined: Sep 2018
Posts: 86
W
Shop Shark
re; Hammered center bolt washers.

Heres a photo of the 1's i took out, i believe they're original to day built. The od measures rch more than 13/16". Remember these nuts & bolts are tight to 7/16 nft torque specs. They are not compressing the mount rubber like the outboard bolts are. Outboard bolts are snug tight only.

washers, https://postimg.cc/gallery/2a2hxsvnq/

Re: Front motor mount assembly, slots up or down? 48-3609
wrenchguy #1285019 Sat Oct 27 2018 12:49 AM
Joined: Mar 2010
Posts: 9,450
5
Master Gabster
We sent a man to the moon. Some of those guys probably worked on a Stovebolt truck or two.
Why can't someone come up with a simple design, modern material motor mount?!


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