 Steering rack lubification? |
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| SirAndy |
  Oct 30 2011, 05:51 PM
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#1
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Resident German  Group: Admin Posts: 41,625 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California  |
Is there anything special about the steering rack grease?
What came out of the rack i've been cleaning up looks like your off the mill black wheel bearing grease ... Does it matter what i use in there? (IMG:style_emoticons/default/idea.gif) |
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| jmill |
Oct 30 2011, 06:02 PM
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#2
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Green Hornet Group: Members Posts: 2,449 Joined: 9-May 08 From: Racine, Wisconsin Member No.: 9,038 Region Association: Upper MidWest |
(IMG:style_emoticons/default/popcorn[1].gif)
Very timely. I'm going to be putting mine in this week. |
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| euro911 |
Oct 30 2011, 06:21 PM
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#3
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,849 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California 
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I've read differing recommendations, from standard grease, to 75~90Wt hypoid oil - with sound reasoning on each side of the issue.
Here's one I ran across in reference to racks on MG's that I thought to be a good read: ... "The advantages of oil are many, but perhaps the most important reason why oil is specified by the manufacturer is that the bronze bushings which the rack slides through are porous. By "soaking up" the oil, the bushing is then able to self-lubricate the rack even if the oil runs low. The same type of bushing is used elsewhere in the car including the generator, which is designed to be soaked in oil for 24 hours before installation. If grease is used instead, it can clog the pours of the bushing, reducing its ability to self-lubricate. Grease can also trap unwanted particles or debris where it can cause premature wear on the bushings and rack. Another advantage of oil over grease is that it flows through the rack from side to side as you steer, keeping all surfaces constantly lubricated. This constant flow of oil also washes away any undesirable particles and allows them to settle out, in theory leaving fresh, clean oil on the rack. Grease will tend to be pushed out to the side where it will remain forever, doing nothing except to prevent rust wherever it collects." ... |
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| McMark |
Oct 30 2011, 07:16 PM
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#4
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
From those handy factory manuals. LM-47 is LubroMoly CV Joint grease, available at your friendly neighborhood Original Customs, for a whopping $5. (IMG:style_emoticons/default/laugh.gif)
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| nathansnathan |
Oct 31 2011, 07:08 AM
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#5
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Senior Member Group: Members Posts: 1,052 Joined: 31-May 10 From: Laguna Beach, CA Member No.: 11,782 Region Association: None |
Good to know this. That stuff looks perfect, the 'liqui-moly' seems the same as 'lubri-moly', seems they came up with the idea of adding molybdenum disulfide to oil in 1957 is how they got their name.
http://en.wikipedia.org/wiki/Liqui_Moly |
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| jaxdream |
Oct 31 2011, 08:34 AM
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#6
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Senior Member Group: Members Posts: 974 Joined: 8-July 08 From: North Central Tennessee Member No.: 9,270 Region Association: South East States |
I used water resistant boat trailer bearing grease to combat the rain water intrusion . YMMV....
Jack |
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| underthetire |
Oct 31 2011, 09:36 AM
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#7
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
QUOTE(euro911 @ Oct 30 2011, 05:21 PM)  I've read differing recommendations, from standard grease, to 75~90Wt hypoid oil - with sound reasoning on each side of the issue. Here's one I ran across in reference to racks on MG's that I thought to be a good read: ... "The advantages of oil are many, but perhaps the most important reason why oil is specified by the manufacturer is that the bronze bushings which the rack slides through are porous. By "soaking up" the oil, the bushing is then able to self-lubricate the rack even if the oil runs low. The same type of bushing is used elsewhere in the car including the generator, which is designed to be soaked in oil for 24 hours before installation. If grease is used instead, it can clog the pours of the bushing, reducing its ability to self-lubricate. Grease can also trap unwanted particles or debris where it can cause premature wear on the bushings and rack. Another advantage of oil over grease is that it flows through the rack from side to side as you steer, keeping all surfaces constantly lubricated. This constant flow of oil also washes away any undesirable particles and allows them to settle out, in theory leaving fresh, clean oil on the rack. Grease will tend to be pushed out to the side where it will remain forever, doing nothing except to prevent rust wherever it collects." ... Just one more place for a British car to leak oil. (IMG:style_emoticons/default/lol-2.gif) |
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| Gint |
Oct 31 2011, 09:40 PM
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#8
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Mike Ginter Group: Admin Posts: 16,070 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
QUOTE(McMark @ Oct 30 2011, 06:16 PM) From those handy factory manuals. LM-47 is LubroMoly CV Joint grease, available at your friendly neighborhood Original Customs, for a whopping $5. (IMG:style_emoticons/default/laugh.gif) Sweet! Price me out a tube of that gunk and a speedo angle drive unit would ya? I'll send you a PM. |
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