Thread: so, what does that rack damper bolt (617) actually do?
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Old 03-23-2007, 02:26 PM
SD Blue SD Blue is offline
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
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Sorry I couldn't find a photo but here goes..........o o o o o.(the o's=valves & underline=rack)............The rack is a geared shaft in the IP that turns a tapered plunger in the fuel delivery valve to control the amount of fuel delivered with each stroke. When the rack returns to idle, the dampner cushions the return for a more gradual decrease at the very end of its travel.
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84 300SD 350K+ miles ( Blue Belle )
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