 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: 42,206 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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| euro911 |
Oct 30 2011, 06:21 PM
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,885 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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| underthetire |
Oct 31 2011, 09:36 AM
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#3
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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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Posts in this topic
SirAndy Steering rack lubification? Oct 30 2011, 05:51 PM
jmill :popcorn:
Very timely. I'm going to be putt... Oct 30 2011, 06:02 PM McMark From those handy factory manuals. LM-47 is LubroM... Oct 30 2011, 07:16 PM
Gint From those handy factory manuals. LM-47 is LubroM... Oct 31 2011, 09:40 PM nathansnathan Good to know this. That stuff looks perfect, the ... Oct 31 2011, 07:08 AM jaxdream I used water resistant boat trailer bearing grease... Oct 31 2011, 08:34 AM |
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