1994.5 - 1997 7.3L Power Stroke Diesel  

not good, need some help fellas!

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  #16  
Old 09-12-2013, 05:38 PM
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Please not the pulley on Top is for the Vacuum pump. Bottom as you can see is the power steering pump. To remove the pump, you have to first remove the pulley which requires the special removal tool to do so.
So here's the picture of the broken bracket.
 
  #17  
Old 09-12-2013, 05:41 PM
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I still need to check for leaks again and Power Steering levels. I know there's still some air in the lines more then likely. I was told the pump needed to be bled first, however, I find that hard to believe and so far it's working like a champ!
 
  #18  
Old 09-12-2013, 05:44 PM
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Also, there are 4 bolts that bolt the bracket to the front of the motor. Two are visable, and two are not. You have to feel for them. Make sure all four are removed!
Note them in the pic above. The smaller 3 are for the vacuum pump.
 
  #19  
Old 09-12-2013, 06:55 PM
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Hmm, I was expecting the break, at least on one side, to be _through_ one of the p/s pump bolt holes. So, referring to your second pic, which hole had the sheared-off bolt? If it was the top one, closest to the vac pump, I can see how/why the bracket cracked; all the weight of the pump and the force of the belt was on the two lower bolts, on that outer loop section of the bracket. I'm no structural engineer, but it seems like a design fail. If they had to be limited to three bolts to hold the pump, there should have been two on the more "central" part of the bracket, and just one on the outer loop.
 
  #20  
Old 09-12-2013, 08:03 PM
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to bleed the power steering system, just turn the wheel full turn back and foruth a few times. that bleeds it out.
 
  #21  
Old 09-12-2013, 09:32 PM
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madpogue,
Excellent questions and points! The sheared off bolt was indeed the bolt at the 1:00 position! Never found the head, but the rest of the bolt I had to remove out of the power steering pump.
Anytime bolts loosen, it changes stress point locations dramatically. As the bolts are tightened down, friction distributes the stresses evenly.
I think the design is ample, until things loosen up. This is indeed a heavy heavy vehicle.
Why they chose aluminum is perplexing to me. Possibly due to the motor design and bolt hole options into the front of the motor? Possibly 4 holes may not have been sufficient to hold more weight??? A steel bracket would have been substantially heavier.
 
  #22  
Old 09-12-2013, 09:33 PM
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Thank you talyn! I figured as much. Took her for a lengthy drive tonight. Steers great! I am happy this happened leaving the house and not on a beach trip towing the 23 foot Komfort trailer!
I consider myself lucky!
 
  #23  
Old 09-13-2013, 08:35 AM
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That's crazy it broke like that. I wonder if there was a crack from something - like maybe someone using the bracket to pry against or something. And, over time it just worked itself bigger and bigger until it broke. If it was just the fact that it is aluminum and these trucks are heavy, then you would think this would be posted more often as a problem.

Glad you are back up and running. That 4th bolt on the bracket is a bugger to see. Had me stumped for a while too!
 
  #24  
Old 09-13-2013, 08:37 AM
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They can get loose and it causes undue stress on the bracket.
 
  #25  
Old 09-13-2013, 10:27 AM
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Thanks Dan! Yessir, I am back on the road! Feels gooooooooooood!!!!!!!
Thanks Talyn! You are correct sir!
 
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