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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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Old 10-16-2021
Cardiomonster Cardiomonster is offline
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Default Missing a pulley?

I am currently in the middle of changing the transmission fluid to Transynd 668 w/filter and refreshing the coolant on my 3208 NA and I am happy to report that my '81-'82 FC has a swing-out radiator. The hoses aren't allowing it to open very easily, but more concerning is what appears to be a missing pulley wheel that is wearing the belt. Does anyone know where I can source a new or used one? Also, which transmission line is the return line so that I can purge the remaining fluid?

Thank you,
Matt
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Old 10-16-2021
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It looks like the A/C compressor idler. Replace the belts with a shorter version and move on. I'm no help on the flow direction of the transmission
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Old 10-16-2021
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Randy Dupree Randy Dupree is offline
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Its early and i have not had coffee but i would bet that the line going to the top of the trans is the return line.
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Old 10-16-2021
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Unless you pull the transmission and get the converter off and drain it, you'll never get it all out, so why go through the extra headache of all that work? Unless you have a lot of water in the fluid, I'd drain the pan, R&R the filter and call it a day.
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Old 10-16-2021
marknoelh marknoelh is offline
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If that’s the a/c idler pulley I have one, free for the shipping price. If your chassis a/c doesn’t work anyway just remove that belt.
Pm me a shipping address if you want it.
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Old 10-17-2021
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Quote:
Originally Posted by marknoelh View Post
If that’s the a/c idler pulley I have one, free for the shipping price. If your chassis a/c doesn’t work anyway just remove that belt.
Pm me a shipping address if you want it.
Can't remove the belt, two are required to turn the air compressor and the alternator, you change them to two of the same length
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Old 10-17-2021
marknoelh marknoelh is offline
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The a/c is one belt, driven by the fan pulley tensioned with an idler pulley.
The air compressor has two belts, driven by the water pump tensioned with the alternator
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Old 10-18-2021
Cardiomonster Cardiomonster is offline
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Quote:
Originally Posted by CrashTestDummy View Post
Unless you pull the transmission and get the converter off and drain it, you'll never get it all out, so why go through the extra headache of all that work? Unless you have a lot of water in the fluid, I'd drain the pan, R&R the filter and call it a day.
Thanks for typing some sence into me Crashtest. Did as you suggested but only managed to retrieve about 4 gallons. Guess I'll save the extra for a short, no filter service interval. There was no rubber ring at the dipstick tube but the filter kit came with one. Funny that the Allison filter update release doesn't reference it.

I have to say it was fun finally seeing what's behind the bulkhead. Decided to clip the loose AC belt away. Will take Mark up on the pulley jic I fix the cab air.

Thank you all for the timely response. Cheers! Matt
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