Wipers and Tires

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Hanadarko, Jul 16, 2010.

  1. Hanadarko

    Hanadarko Independent Owner/Operator

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    So I got the parts and set this up. I used the Trailer emergency line.

    I get some air, but only if I run the truck at high idle and she reached 120psi cut out. One it falls below that, I begin to have issues airing up tires.
    I look at the dash and the tanks are at 90psi, which explains why I can't air up my 100psi tires.

    What am I missing here? :biggrin_25521:
     
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  3. Winchester Magnum

    Winchester Magnum Road Train Member

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    I use that same hose you speak of and sometimes it takes a few build up cycles of the compresor in order to fill a tire to 100 psi. Even when the tire is at 90 to begin with.
     
  4. Native Dancer

    Native Dancer Heavy Load Member

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    Tire pressure varies by tire manufacturer. On my Toyos I run 105# in the summer for mileage, 95# in winter for better traction. Tire wear is an indicater of proper pressure. Abnormal wear in the middle = pressure too high, abnormal wear at edges = pressure too low. Using truck air for inflating tires is not a good idea. You are putting water and oil from your air system into your tires which causes rotting. If you are determined to do this drain your air tanks several times before inflating your tires.
     
  5. lilillill

    lilillill Sarcasm... it's not just for breakfast

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    Use a filter/water separator, like the kind meant for automotive spray painting, inline with the hose. If you don't want to attach it permanently, you can vise grip it to the frame when needed. Add some Litter Pearls (silica gel cat litter) to the bowl for extra dry air.

    Alternatively, Harbor Freight sells a disposable inline filter/dessicant for about $8.

    On this same note, I once picked up a trailer with a Meritor air system on it. When I drained the tank on the trailer, I got about a 5 gallons of oil/water mix... mostly oil. Those tires were screwed.
     
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  6. Hanadarko

    Hanadarko Independent Owner/Operator

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    Well my Makita HOT DOG compressor claims it should sustain 130psi.
    I cant get more than 100 out of it. Maybe Its time to take a screwdriver to it...

    good point with water/oil in the air line....sheesh.
     
  7. Native Dancer

    Native Dancer Heavy Load Member

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    Constant compresser output is related to the size of your tank. With a small tank it is hard for the compressor to keep up, a large tank gives you a reserve to work from.
     
  8. DL550CAT

    DL550CAT Road Train Member

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    What do you think you are doing with "shop" air? The air system on my truck is cleaner as it should be you dont want oil in with you brake chambers.
     
  9. Gambi80

    Gambi80 Medium Load Member

    Maybe put a quick connect on one of the unused plugs on an air tank and get the air straight from the teet. Seems I've had a little better results that way than using the red hose.
     
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  10. Hanadarko

    Hanadarko Independent Owner/Operator

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    This idea had come to mind too. Its a good one. :biggrin_25525:
     
  11. old-six-pack

    old-six-pack Heavy Load Member

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    try reading what's on the side of the tire....:biggrin_255::biggrin_255:
     
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