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Old 06-04-2014, 10:09 AM   #1
FarmerSid
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Rear cab mount shackles 51 AD

Hey all. Got a cab mount kit from LMC and started to rebuild the rear cab mount shackles. The new rubber bushings are smaller in diameter and longer than needed. They fit the studs fine but the OD is too small. Sloppy in the shackle eyelets. The shoulder portion of the new bushing seems too small as well. Almost falls down in the shackle eyelet.

Should I use these or make new ones out of teflon or?
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Old 06-04-2014, 10:20 AM   #2
mr48chev
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Re: Rear cab mount shackles 51 AD

That's not going to work too well. Teflon might be a bit stiff in the rebound department but it should last forever.
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Old 06-04-2014, 10:41 AM   #3
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Re: Rear cab mount shackles 51 AD

The teflon isn't going to work very well or the new bushings from LMC? What do you think I should do?
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Old 06-04-2014, 10:46 AM   #4
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Re: Rear cab mount shackles 51 AD

The one's that appear to be too small won't work well. I think I have a set in my stash of stuff I haven't used yet but I never measured mine.

The Teflon will work ok but are going to be pretty solid with no give. What about a sleeve to go around the bushing? First I'd give them a call and see if they got a bad batch or something though.
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My ongoing truck projects:
48 Chev 3100 that will run a 292 Six.
71 GMC 2500 that is getting a Cad 500 transplant.
77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.
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Old 06-04-2014, 01:07 PM   #5
STOCKISH
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Re: Rear cab mount shackles 51 AD

Might not help you Sid, but I got rid of the shackle mounts and made mounts that are similar to the front mounts. Worked great.
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Old 06-04-2014, 02:16 PM   #6
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Re: Rear cab mount shackles 51 AD

Hey Josh! Good to hear from ya.

The new bushing measure 1.14" long and 0.822" diam. The shoulder is 0.200 thick and 0.950 in diam. The portion that goes into the shackle is 0.920" long.
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Old 06-04-2014, 02:26 PM   #7
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Re: Rear cab mount shackles 51 AD

The bushing gets pushed into the "tube" like hole on the shackle, if they are too long and too thin, aren't they going to get "fattened" when they are smashed as the bolt is tightened?

I rebuilt mine years ago and don't remember but it's common for the tightening of the bolt on something like that to simply "force" the rubber piece to fit properly by smashing it in there.

Brian
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Old 06-04-2014, 02:55 PM   #8
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Re: Rear cab mount shackles 51 AD

I did assemble the shackle and the new rubber did squish in the shackle. It seemed tight afterwards. That's why I thought I'd ask on here and see if anyone else experienced this.

Thanks Brian.
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Old 06-05-2014, 10:32 PM   #9
STOCKISH
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Re: Rear cab mount shackles 51 AD

Hey man, called you tonight but no answer. Give me a call tomorrow if you get a chance. Thanks buddy.
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Old 06-06-2014, 06:57 AM   #10
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Re: Rear cab mount shackles 51 AD

I must have been on the phone. I heard a beep indicating an incoming call when I was chatting with a guy that has front fenders for sale. Are you around during the day? I'm off today.
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