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  #1  
Old 01-28-2008, 10:04 AM
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Join Date: Jun 2005
Location: NJ
Posts: 1,182
Help w/ top of belt tensioner shock

The belt tensioner spring on my 90 350sdl broke.
The bottom attachments are logical but I have doubts of the top portion.

Does the top of the shock just bolt into the head or to the black triangular plastic piece that the spring hooks to?

I see a threaded hole in the head but it feels like it should attach to the plastic piece the spring attaches to.

Don

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82 300D....went to MB heaven
90 350 SDL....excercising con rods
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  #2  
Old 01-28-2008, 10:15 AM
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My memory is a little foggy, but if you look at the black plastic piece you will see a hole perpendicular to the bolt. You hook the spring in and then put a small rod in the hole to pry the spring up so you can insert the bolt into the head. Your lug wrench can be used for the rod. Hope that helps
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  #3  
Old 01-28-2008, 10:19 AM
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Location: Blue Point, NY
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The shock bolts directly to the head. The plastic piece slips over the top of a pin that extends into the head. The spring hooks the plastic piece.
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  #4  
Old 01-28-2008, 04:49 PM
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Thanks!

It seems there are 2 types of mounts for the 603.

I KNOW now that on a 3.5 motor the shock and the plastic piece that holds the spring do not touch. The plastic piece doesn't move at all. All the movement occurs at the bottom metal piece that both the shock and spring attach to.


Don
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82 300D....went to MB heaven
90 350 SDL....excercising con rods
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  #5  
Old 01-28-2008, 05:58 PM
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Quote:
Originally Posted by andmoon View Post
Thanks!

It seems there are 2 types of mounts for the 603.

I KNOW now that on a 3.5 motor the shock and the plastic piece that holds the spring do not touch. The plastic piece doesn't move at all. All the movement occurs at the bottom metal piece that both the shock and spring attach to.


Don
The 603.960 and 603.961 engines are the same configuration as the 603.970.

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