| randall977 | Sep 25, 2012 11:46 am |
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Subject: Driveshaft grease Which grease should I use for the two driveshafts? |
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| David | Sep 25, 2012 2:10 pm |
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Subject: Re: Driveshaft grease You might want to consult others but my recollection is high graphite content for extreme pressure applications; it's almost black in colour |
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| randall977 | Sep 25, 2012 2:25 pm |
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Subject: Re: Driveshaft grease Graphite grease is recommended for splined applications, I am wondering about Moly Grease too... |
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| David | Sep 25, 2012 3:13 pm |
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Subject: Re: Driveshaft grease In the beginning, AML chose an "ordinary" grease but after repeated half-shaft failures under warranty they got in Hardy-Spicer for a design review, who immediatley spotted that the designed geometry of the shafts was not perpendicular to the plane of wheel rotation, which causes uneven peak loading on the splines which the "ordinary" grease couldn't cope with. Hence the change to graphite grease. Your call re Moly grease though |
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| randall977 | Sep 25, 2012 3:39 pm |
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Subject: Re: Driveshaft grease I think Hardy Spicer knew their stuff, so graphite grease it is. I had to replace one of the Hardy Spicer UJ's, both outer ones have now been replaced. The splines don't appear to have any play (though both shafts have been replaced) - the UJ's may have taken the peak loading and saved the splines? |
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| David | Sep 25, 2012 4:33 pm |
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Subject: Re: Driveshaft grease It also occurs to me that when re-assembling each half-shaft it is important to align the splines so that the UJ yokes at each end are parallel to each other (and not "out" by one or more splines) |
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| alecrb | Sep 25, 2012 10:34 pm |
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Subject: Re: Driveshaft grease If your input and output shafts are more or less parallel to each other, but move laterally with respect to each other, the best setup is to have the yokes on either end of the shaft parallel to each other, not at right angles. U-joints are not perfect when running at an angle, and although the diff may be running at a steady speed, the driveshaft will vary in speed. By aligning the yokes on the shaft in parallel this effect cancels out and the wheel should run at a steady speed. Alec |
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| David | Sep 26, 2012 8:49 am |
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Subject: Re: Driveshaft grease Alec is right, have edited my previous |
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| ray sherratt | Sep 28, 2012 9:42 am |
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Subject: Re: Driveshaft grease Re- spline & joint lubrication. A 140 grade oil is recomended for joints and splines,sliding joints ( not splined ) on agricultural shafts a graphite-based grease is recommended. Data from Hardy Spicer Ltd published in servicing guide to british motor vehicles volume 3. When a grease gun is mentioned on a service sheet, it is only a macanical means of delivering the oil. Ray Sherratt. |
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| David | Sep 28, 2012 9:48 am |
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Subject: Re: Driveshaft grease Oil is not suitable for LR drive shaft splines for reasons I set out earlier |
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