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09-08-2020, 01:13 PM
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#1 |
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Registered User
Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,131
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Replacing Upper A-Arm Bumpers
I have new A-arm bumpers coming and wanted to ask if there is any tricks to installing these with the suspension in tact. I'm really hoping to not have to take the springs out and such. The old ones pretty much just crumbled out on their own. They were past due.
72 C10
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He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 |
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09-08-2020, 01:48 PM
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#2 |
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Registered User
 
Join Date: Apr 2017
Location: Boise, ID
Posts: 856
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Re: Replacing Upper A-Arm Bumpers
They’re super easy. I threw a little Vaseline on mine and they popped right in. If they’re stubborn you can heat them up GENTLY with a heat gun!
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1968 GMC C2500 Long Bed Fleetside |
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09-08-2020, 02:43 PM
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#3 |
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Registered User
Join Date: Dec 2012
Location: Tacoma WA
Posts: 274
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Re: Replacing Upper A-Arm Bumpers
Smidge of Dawn dish soap.
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1970 3/4 ton long box GMC !968 C10 short stepside (Papa's Old Lorry) 2006 2500 HD Silverado Duramax/Alison |
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09-08-2020, 09:19 PM
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#4 |
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Registered User
Join Date: May 2018
Location: Prattville, AL
Posts: 611
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Re: Replacing Upper A-Arm Bumpers
dish washing soap works great. Just got done doing mine super easy.
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-------------------------------------------------------- 1967 C10 "Snowball" (Currently in a thousand pieces down from a bazillion) 1989 Toyota DLX pickup "The Hulk" |
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09-09-2020, 09:21 AM
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#5 |
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Registered User
Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,131
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Re: Replacing Upper A-Arm Bumpers
Thanks for the boost in convenience! It just looks awful tight in there and rubber doodads can be a pain.
__________________
He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 |
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09-09-2020, 10:43 AM
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#6 |
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Registered User
Join Date: Jul 2016
Location: Deerfield IL
Posts: 108
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Re: Replacing Upper A-Arm Bumpers
Had mine out when I rebuilt the front end and tried to replace the old ones with new CPP urethane bumpers. Simply couldn't get them in. Tried soap, wax, bunch of other stuff. No go. Ended up cleaning the stock pieces and reusing those. Went in with no problem. The knob that fits through the hole on the a-arm was a bit smaller on the stock pieces, and the rubber is a bunch softer, so that's probably why.
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09-09-2020, 12:04 PM
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#7 |
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Registered User
Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,131
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Re: Replacing Upper A-Arm Bumpers
I suspect the old bumpers were original and when I refurbished the suspension... they were removed, cleaned up, and re-installed in good order. 20 years later (I know) they were dry rotted to the point that I looked at one and it disintegrated.
Just goes to show you what can happen to rubber even if kept garaged over the years. I think I will check the 20 year old NEW poly cab mounts too. I'd hate to have one of those disintegrate while taking a corner.
__________________
He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 |
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