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  #1  
Old 04-06-2010, 11:16 PM
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Is there anything special about the bolts on the w123 power steering pump?

I was having weird steering issues when parallel parking and found that two of the bolts from my PS pump were missing!

That means only one bolt left

I found one of the nuts laying inside the engine bay at the base of the fender, so I can use that to gauge the thread and size...

Do the bolts actually thread into the pump/mounting? Or is it just supposed to be a bolt/nut washer sort of thing?

I looked at the FSM, but it doesn't give clear details about the bolts, just what to loosen to take it off.
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Old 04-06-2010, 11:51 PM
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They are all through bolts with nuts on the back. FWIW the bolt heads are all 13mm.
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  #3  
Old 04-07-2010, 12:01 AM
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the bolts are about 4 1/4in long. no they don`t thread into anything.
the top left is the pivot bolt, bottom left and top right are in the slot for adjustment.
the adjuster bolt is on the top right. this is facing from the front.

Charlie
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  #4  
Old 04-07-2010, 12:06 AM
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make sure to replace them with bolts of the correct hardness; compare the markings on the head of the remaining bolt and be sure to match them. Too soft a bolt could be bad.....
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  #5  
Old 04-07-2010, 01:03 AM
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Quote:
Originally Posted by smiffy6four View Post
make sure to replace them with bolts of the correct hardness; compare the markings on the head of the remaining bolt and be sure to match them. Too soft a bolt could be bad.....
Typically the hardness is 8.8, which is kinda like SAE grade 5.
Standard for automotive no need for the superhardness of aircraft bolts.
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