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Replacing Air compressor Lines

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by nikmirbre, Apr 23, 2020.

Page 5 of 5
  1. May 15, 2020 #41
    Rideandrepair

    Rideandrepair Road Train Member

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    There’s no pressure, if the caps off the radiator, maybe put a wrench on the hose part of the fitting, and crank away on the crowfoot
     
    Rideandrepair, May 15, 2020
    Rideandrepair, May 15, 2020
    #41
    nikmirbre Thanks this.
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  3. May 15, 2020 #42
    nikmirbre

    nikmirbre Road Train Member

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    Ok, I just drained the coolant and tried again and I can't get it off. I can say for sure its not a matter of getting a wrench on there because I can do that..... it just acts as if there is pressure in there.
     
    nikmirbre, May 15, 2020
    nikmirbre, May 15, 2020
    #42
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  4. May 15, 2020 #43
    Rideandrepair

    Rideandrepair Road Train Member

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    There’s no pressure, it’s a coolant line, like any other heater hose. Why not take the block side off first if you can? Any pressure will bleed off once it’s loose. Acts like, what do you mean? It’s squirting coolant? Let it drain, take it off.
     
    Rideandrepair, May 15, 2020
    Rideandrepair, May 15, 2020
    #43
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  5. May 15, 2020 #44
    062

    062 Road Train Member

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    Looks to be a swivel end. Are you sure you have it backed off all the threads? Sometimes there’s a little twist in the line and it can screw itself back on a thread.
     
    062, May 15, 2020
    062, May 15, 2020
    #44
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  7. May 15, 2020 #45
    nikmirbre

    nikmirbre Road Train Member

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    Its like I can tighten it up, then I go to loosen it and it will only loosen back to where it was before I tightened it. Ill try the block side first this time in about an hour......In post #35 what is the silver braided line next to it? Is it an air line I assume? Just incase I need to remove that line....
     
    nikmirbre, May 15, 2020
    nikmirbre, May 15, 2020
    #45
    Rideandrepair Thanks this.
  8. May 15, 2020 #46
    062

    062 Road Train Member

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    Yes the stainless is air.
     
    062, May 15, 2020
    062, May 15, 2020
    #46
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  9. May 15, 2020 #47
    Rideandrepair

    Rideandrepair Road Train Member

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    SS line may be under pressure. Pump brake pedal down, before taking it off. The nuts just jamming up, spray with WD, or PB, and maybe try wiggling the hose, while you turn the nut. Or put another wrench on the hose side, and crank it off.
     
    Rideandrepair, May 15, 2020
    Rideandrepair, May 15, 2020
    #47
    nikmirbre and 062 Thank this.
  10. May 15, 2020 #48
    nikmirbre

    nikmirbre Road Train Member

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    4AD81C47-D5DA-4124-B1CC-63363A773506.jpeg E8D5FF66-0B42-4693-8CAC-C2CF385FF482.jpeg 16DD9A26-92F3-4017-A92F-EAA83C818731.jpeg
     
    nikmirbre, May 15, 2020
    nikmirbre, May 15, 2020
    #48
  11. May 15, 2020 #49
    nikmirbre

    nikmirbre Road Train Member

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    Well I twisted the line and it crumbled. Which is good because I’d rather it do it while I’m home rather than while I’m driving. I figured out why it wasn’t coming loose.... in one of the pictures you see I have the wrench on it, what was happening was the wrench was hitting the bottom exhaust thing So it wasn’t turning any further.
    I know now the proper procedure is to take the block side off first. Because once I got that side off the tough part became easy. I’ll get hose made tomorrow morning.
     
    nikmirbre, May 15, 2020
    nikmirbre, May 15, 2020
    #49
    Rideandrepair and 062 Thank this.
  12. May 15, 2020 #50
    Rideandrepair

    Rideandrepair Road Train Member

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    That’s good, so the line was brittle. Mine just has a silicone hose for both, Good solid line, I think is better.
     
    Rideandrepair, May 15, 2020
    Rideandrepair, May 15, 2020
    #50
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