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  #1  
Old 02-09-2012, 08:28 PM
John Schroader's Avatar
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Location: Kentucky
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power steering pump - repair or replace?

A couple of years back my power steering pump went kaput. Fortunately I was able to locate a replacement for $50. All has been well until a couple of weeks ago. Now my power steering is a bit jerky at idle and when wheels are fully turned. It's tolerable now but I don't expect it to heal itself. My question is --- replace or rebuild? I know nothing about rebuilding these pumps but am pretty good at following instructions. Could it be a simple filter and seal replacement, or should I try to locate another donor pump? Any words of wisdom are appreciated.
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bio burnin' 83 300D, '83 300 SD, '79 240D
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  #2  
Old 02-09-2012, 08:36 PM
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I generally don't recommend miracles in a bottle, but you might want to try a bottle of the Lucas power steering concoction. (It comes with a money-back guarantee.)
A fluid transfusion and new filter might also be a good idea.
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  #3  
Old 02-09-2012, 09:33 PM
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Location: Asheville NC, USA
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New fluid and filter for sure. Do you still have your old pump? If so, where did it fail? Zf or vickers? The front seals are pretty straight forward, if you can get that pulley offa there.
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  #4  
Old 02-17-2012, 12:35 PM
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Ordered a filter and seals from Phil. Changed fluid (used mixture of Lucas and regular PS fluid) and filter this morning. All's well. Eventually will put seals in old pump and have a backup. Thanks for the good advice.
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John Schroader
bio burnin' 83 300D, '83 300 SD, '79 240D
"I've never met a man who was good at making excuses who was good at anything else" Ben Franklin
"You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln
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  #5  
Old 02-17-2012, 02:20 PM
1978 300D, Georga car
 
Join Date: Dec 2010
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Form my experience, using PS fluid causes the seals to weep. Mine was low when I first brought the car and I used the PE's fluid to top off to get it home. After reading up I realized that I should have used dextron. I flushed and replaced the filter and the weeping went away.
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  #6  
Old 02-17-2012, 04:33 PM
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Hey John,
From your description ~ jerky at full lock, it sounds like you may have a pressure problem.
If it was just a seal, it would be a simple case of replacing it & the bearings as well.
With vane pumps, when they loose pressure its often that the body is scored & the vanes damaged. Not wanting to be a prophet of doom but that is what you describe. In such cases a rebuild is a waste, even on a cast iron bodied Vickers.
When you pull your spare down, have a close look at the vanes & body.
Good Luck !!
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