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Caterpillar 3208 Solutions This sub-forum is hosted by Mike Hohnstein who has been at this kind of thing for 50+ years now, guess I'm addicted. The saga has been all about progressively larger shop space since then. Honestly, never wanted to get into the CAT 3208's that were originally considered to be a throwaway engine but that's all that works in a FC in my world. Same thing with my Ford toter, that came with a NA, too much effort to hang in a 6, so been at it with the CAT V-8 for 20 years now. In reality you can get excellent life out of a CAT 3208 if it's built correctly. Post your questions about the CAT 3208 engines here and Mike will try to help you out.

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  #1  
Old 07-18-2016
Rich Johnson's Avatar
Rich Johnson Rich Johnson is offline
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Default Mystery spring

Recently removed the fuel injector governor housing Cat 3208. Removed most parts including the thrust springs for inspection. After cleaning found a small loose spring laying in the housing. Don't know where it's from. It measures about 1/4 inch diameter by 1 inch long. Any idea as to where it belongs?
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Old 07-18-2016
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Default What is this spring for?

Recently removed the fuel injector governor housing Cat 3208. Removed most parts including the thrust springs for inspection. After cleaning found a small loose spring laying in the housing. Don't know where it's from. It measures about 1/4 inch diameter by 1 inch long. Any idea as to where it belongs?
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Old 07-18-2016
Orvie6574 Orvie6574 is offline
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Default

I just done mine 2 months ago, I sure didn't see a spring that small
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Old 07-18-2016
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Ask Randy...he's the spring guy.
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Old 07-18-2016
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Default

Just like any other mystery on 'Bird's a picture always helps and since Mike rebuilds pump, he may have an idea.
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Old 07-19-2016
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Small spring fits on the gov shaft, center of the spring pack. Leaving it out can result in hard starting.
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  #7  
Old 07-19-2016
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Default hunch

Wandering if the spring may be so called 100 percent starting spring mentioned in the manual pictures but not illustrated. Based upon this hunch I'm going to leave it out this time and see if I can work around it.
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Old 07-19-2016
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Post #6 explained what the little spring does and where it goes. Why would you leave it out?
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Old 07-19-2016
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Quote:
Originally Posted by Rich Johnson View Post
Wandering if the spring may be so called 100 percent starting spring mentioned in the manual pictures but not illustrated. Based upon this hunch I'm going to leave it out this time and see if I can work around it.
Rich,

This pump needs rebuilt, resealed, worn parts replaced and calibrated..
It may not be a DIY repair,
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Old 07-19-2016
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Default Why leave spring out

If this is the 100 percent start spring that pushes the rack to 100 percent open, then this is the spring that, during the normal start sequence, results in a full throttle startup until 400 rpm. Should the rack be sticky the potential risk is an over-speed event. I'm hoping that without the spring a partial pedal depression will set the rack for a milder start in a manner with reduced over-speed risk.
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