Control Arm Shaft seals....which way do they go - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ante_up13 · 06-27-2004, 08:24 PM

I am installing new shafts and new seals on my 69 c-10 and was wondering if any of you guys have done that...The seals look like they should have the larger end facing the bushing but the instructions say different...It just doesn't look right when its the other way around...please help

The instructions say to put the smaller diameter side of the seal on the shoulder...I am assuming they mean the outside of the shaft but what do I know...absolutely jack

crazy longhorn · 06-27-2004, 10:42 PM

i dont have any pics to help on this one, but the seal slips over the shoulder of the bushing(that should be the larger ID of the seal). the other end, (ID) should fit snug on the shaft. hope that helps.....crazyL

**COBALT** · 06-30-2004, 02:48 PM

The wider end of the seal goes against the inside of the control arm. The narrower end of the seal goes over the end of the shaft and sits snug against the shoulder on the shaft. If you think about it it makes sense, because when the bushing threads into the control arm the rear of it needs to make it inside part of that seal. It has to be this way so you can fill the pocket with grease. Otherwise how the heck would you get grease into that little space?

06-27-2004, 08:24 PM	#1
ante_up13 Registered User Join Date: May 2004 Location: Here Posts: 167	Control Arm Shaft seals....which way do they go I am installing new shafts and new seals on my 69 c-10 and was wondering if any of you guys have done that...The seals look like they should have the larger end facing the bushing but the instructions say different...It just doesn't look right when its the other way around...please help The instructions say to put the smaller diameter side of the seal on the shoulder...I am assuming they mean the outside of the shaft but what do I know...absolutely jack Last edited by ante_up13; 06-27-2004 at 08:29 PM.

06-27-2004, 10:42 PM	#2
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	i dont have any pics to help on this one, but the seal slips over the shoulder of the bushing(that should be the larger ID of the seal). the other end, (ID) should fit snug on the shaft. hope that helps.....crazyL __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

06-30-2004, 02:48 PM	#3
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	The wider end of the seal goes against the inside of the control arm. The narrower end of the seal goes over the end of the shaft and sits snug against the shoulder on the shaft. If you think about it it makes sense, because when the bushing threads into the control arm the rear of it needs to make it inside part of that seal. It has to be this way so you can fill the pocket with grease. Otherwise how the heck would you get grease into that little space? __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

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