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So I am working on the air system on my superliner. Looking at generic air diagrams. All of them are showing a "wet tank" and a primary and secondary tank. So three air tanks total. Mine only seems to have the primary and secondary. No wet tank. So my question is, is my truck just pre these diagrams? Should I put a wet tank in it to try and keep water out of the system? It's a 1989.

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quite often the secondary is a dual tank, the wet section is inboard.... or not..!!! giveaway is two drains underneath..

follow the hoses from the compressor, through the dryer if you have one, and see which tank it enters.

if you don't have a wet tank, and no dryer, then yes put one in.... most diagrams are somewhat generic so your truck doesn't always look like the drawing

I suspect you do have one

BC Mack

Edited by BC Mack

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1 hour ago, BC Mack said:

quite often the secondary is a dual tank, the wet section is inboard.... or not..!!! giveaway is two drains underneath..

follow the hoses from the compressor, through the dryer if you have one, and see which tank it enters.

if you don't have a wet tank, and no dryer, then yes put one in.... most diagrams are somewhat generic so your truck doesn't always look like the drawing

I suspect you do have one

BC Mack

Ok that makes sense the passanger tank has two drains. Thank you for the great information. I am slowly learning. 

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little different subject     the tires and wheels i spoke of are all hub piloted so no help yet     cc

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Just now, carlotpilot said:

little different subject     the tires and wheels i spoke of are all hub piloted so no help yet     cc

No problem thank you for looking for me.

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Just now, 66rmack said:

No problem thank you for looking for me.

if you find some keep me posted  will keep watching

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57 minutes ago, carlotpilot said:

if you find some keep me posted  will keep watching

I will thank you.

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