Replacing Cab Mounts, any suggestions? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71elect · 07-15-2005, 09:35 PM

Hey guys,
I'm planning on changing out my sagging/cracked cab mounts on the 72 4x4. Anyone got any tricks for getting this done? I thought about using the floor jack to lift up the cab to replace the mounts. However it looks like to get the rear mounts out so that I can reuse the inner sleeve, I'll either have to jack the cab way up off the mount to remove it or drill out the rivets that hold on the mounting bracket to the frame and then replace the rivets with either grade 5 or grade 8 bolts. Any suggestions you guys got that have done this before would be greatly appreciated.

Thanks,
Josh

walker · 07-16-2005, 12:47 AM

Yeah, just jack 'er up. It is not that hard to do.

ACES · 07-16-2005, 07:07 AM

My jack wouldn't go high enough, so I had to take the air out of the tires too. Good ole redneck engineering!

avejoe · 07-16-2005, 10:37 AM

Pretty easy if you can get all the hardware busted loose. Don't forget to loosen the radiator mounts first, even if you are not going to replace them. You will need the slack.

Also, if you have an auto, jacking the cab up WILL knock the truck out of "Park". Make sure you use blocks. I found this out the hard way.

matthufham · 07-16-2005, 05:51 PM

put a brick on the jack and it'll give you another 12 inches or so of lift.

ACES · 07-16-2005, 11:21 PM

Quote:

Originally Posted by matthufham

put a brick on the jack and it'll give you another 12 inches or so of lift.

and possibly kill you when the brick breaks and the truck falls on you

GMC AMI · 07-17-2005, 05:50 AM

Wood block and not a brick. Unless you are thick as a brick then when the truck falls on you, you will be flat as a pancake! Then it's eights and aces for you. Good call Aces!

71elect · 07-18-2005, 09:56 PM

Thanks guys for all the info! I intend on tackling this project in the next couple of days and I wasn't sure what I needed to do to get it done. Sounds like I can just unbolt the existing mounts and jack up the cab high enough to replace the old mounts. I just didn't want to find out the hard way that your not supposed to jack up the cab as you can tweek it and or bust out the glass, but since that's not the case, jacking up the cab works for me.

Thanks again,
Josh

matthufham · 07-23-2005, 11:19 AM

Quote:

Originally Posted by ACES

and possibly kill you when the brick breaks and the truck falls on you

i don't know what kind of bricks you're using... but you're right you have to be careful but if you can jack it up an inch, that's all it takes to remove and replace the bushing. it helps i had a gutted interior because there's a bolt that is under the carpet, and the cab was lighter overall.

GloryHound · 07-23-2005, 12:34 PM

Just do the complete frame off restoration. It will be much more fun!!!! lol

07-15-2005, 09:35 PM	#1
71elect Registered User Join Date: Nov 2002 Location: Southern Idaho Posts: 59	Replacing Cab Mounts, any suggestions? Hey guys, I'm planning on changing out my sagging/cracked cab mounts on the 72 4x4. Anyone got any tricks for getting this done? I thought about using the floor jack to lift up the cab to replace the mounts. However it looks like to get the rear mounts out so that I can reuse the inner sleeve, I'll either have to jack the cab way up off the mount to remove it or drill out the rivets that hold on the mounting bracket to the frame and then replace the rivets with either grade 5 or grade 8 bolts. Any suggestions you guys got that have done this before would be greatly appreciated. Thanks, Josh __________________ 72Chevy swb 4x4 71GMC swb 2x4

07-16-2005, 12:47 AM	#2
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	Yeah, just jack 'er up. It is not that hard to do. __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

07-16-2005, 07:07 AM	#3
ACES Life is a gamble Join Date: Oct 2003 Location: Lee's Summit, MO Posts: 796	My jack wouldn't go high enough, so I had to take the air out of the tires too. Good ole redneck engineering! __________________ 1970 Orange CST C-10 w/350, posi, Longbed The torpid artist seeks inspiration at any cost, by virtue or by vice, by friend or by fiend, by prayer or by wine. -- Ralph Waldo Emerson

07-16-2005, 10:37 AM	#4
avejoe Custer had a plan too. Join Date: Dec 2003 Location: No. California Posts: 344	Pretty easy if you can get all the hardware busted loose. Don't forget to loosen the radiator mounts first, even if you are not going to replace them. You will need the slack. Also, if you have an auto, jacking the cab up WILL knock the truck out of "Park". Make sure you use blocks. I found this out the hard way. __________________ 72 K15 GMC (aka Big White) Performance Rockers, Cab Corners, and Floors Fossil Fuel Glutton Neighborhood Nuisance 98 BMW 540i for Speed (Sold ) 05 Subaru Outback for mileage

07-17-2005, 05:50 AM	#7
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	Wood block and not a brick. Unless you are thick as a brick then when the truck falls on you, you will be flat as a pancake! Then it's eights and aces for you. Good call Aces! __________________ 1968 Chevy 4x4 307 4 speed

07-16-2005, 05:51 PM	#5
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	put a brick on the jack and it'll give you another 12 inches or so of lift.

07-18-2005, 09:56 PM	#8
71elect Registered User Join Date: Nov 2002 Location: Southern Idaho Posts: 59	Thanks guys for all the info! I intend on tackling this project in the next couple of days and I wasn't sure what I needed to do to get it done. Sounds like I can just unbolt the existing mounts and jack up the cab high enough to replace the old mounts. I just didn't want to find out the hard way that your not supposed to jack up the cab as you can tweek it and or bust out the glass, but since that's not the case, jacking up the cab works for me. Thanks again, Josh __________________ 72Chevy swb 4x4 71GMC swb 2x4

07-23-2005, 12:34 PM	#10
GloryHound Working on a Nova. Join Date: Nov 2002 Location: ## Posts: 506	Just do the complete frame off restoration. It will be much more fun!!!! lol



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