Front A-arms bushings, things '71 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ericfallon · 02-24-2018, 11:24 AM

I've never seen this before they are not rubber, well they don't look like rubber and have a grease zerk.
What are these and how do they work, are the like king pin bushings made of metal?
Do you test them for good/bad the same way as a rubber A-arm bushing?

**Steeveedee** · 02-24-2018, 01:16 PM

Lower a-arm bushings are metal nuts with a coarse thread, thus only get grease. The upper a-arm bushings should be neoprene but could have been replaced with polyurethane.

**HO455** · 02-24-2018, 10:16 PM

The only way I know to check them is to use a spring compressor to take the pressure off of the lower control arm and try to wiggle the arm forward and aft looking for movement of the shaft in the bushing. A dead blow hammer helps. As does removing the wheel. If you can't see any movement they are good, really bad ones like the ones on my Burban flop around a 1/4" or more.

02-24-2018, 11:24 AM	#1
ericfallon Registered User Join Date: Feb 2018 Location: kona hawaii Posts: 41	Front A-arms bushings, things '71 I've never seen this before they are not rubber, well they don't look like rubber and have a grease zerk. What are these and how do they work, are the like king pin bushings made of metal? Do you test them for good/bad the same way as a rubber A-arm bushing?

02-24-2018, 01:16 PM	#2
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,081	Re: Front A-arms bushings, things '71 Lower a-arm bushings are metal nuts with a coarse thread, thus only get grease. The upper a-arm bushings should be neoprene but could have been replaced with polyurethane. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

02-24-2018, 10:16 PM	#3
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,791	Re: Front A-arms bushings, things '71 The only way I know to check them is to use a spring compressor to take the pressure off of the lower control arm and try to wiggle the arm forward and aft looking for movement of the shaft in the bushing. A dead blow hammer helps. As does removing the wheel. If you can't see any movement they are good, really bad ones like the ones on my Burban flop around a 1/4" or more. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban the WMB,1991 S(stink)-10 Blazer,1969 GTO, 1970 Javelin, 1952 F2 Ford 4X4, 29 Model A, 72 Firebird. 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



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