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PointedThree :  Vans, Trucks, SUVs and Other Forums : G-Class : Steering knuckle wiper seal replacement

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Steering knuckle wiper seal replacement
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Posted 4/20/2015 6:30 AM
DUTCH
Administrator Doppelgänger




Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
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Re: Steering knuckle wiper seal replacement

NHDave - 4/19/2015 9:16 PM



AlanMcR - 4/18/2015 8:13 PM The axle ball grease doesn't come close to filling the hollow space.  When the axle is spinning an unbooted CV will fling off all the grease and operate unlubricated.  One long freeway trip might be all it takes to kill it.  A properly installed CV boot will be nearly full of specialized grease, with just enough air to handle expansion.

I clearly understand what your saying Alan,, how the slightest breach in a CV boot, at high speed, will quickly expel the recommended grease capacity from the contained area. But what's puzzling me is, why has it been mentioned to remove the plug and check the grease level within the knuckle?

Logic says, no need to do so?

Thank you for answering once again!

I mean no disrespect to such a fine seasoned member Sir Alan!

 NHD



The grease in the swivel ball is not there for lubrication. It is there to form a barrier to prevent ingress of water and dirt by its physical presence and by slowly seeping out past the swipe seal.
#227767 - in reply to #227764
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Posted 4/20/2015 7:51 PM
NHDave
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Date registered: Dec 2013
Location: Seacoast NH.
Vehicle(s): 2004 AMG
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Re: Steering knuckle wiper seal replacement

Figured as much Dutch. So no need to check the grease level within the knuckle, as stated somewhere else?
#227775 - in reply to #227767
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Author
Posted 4/20/2015 8:07 PM
DUTCH
Administrator Doppelgänger




Date registered: Apr 2006
Location: US, GA, Atlanta
Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter
Posts: 9963
5000
Re: Steering knuckle wiper seal replacement

NHDave - 4/20/2015 7:51 PM

Figured as much Dutch. So no need to check the grease level within the knuckle, as stated somewhere else?


I would check it every year or two. You want it there, and some swipe seals let an awfully large amount past.
#227776 - in reply to #227775
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